Updated on 2025/04/26

写真a

 
小野寺　圭祐
 
Organization
Scheduled update Special-Appointment Associate Professor
Position
Special-Appointment Associate Professor
External link

Degree

  • Doctor of Earth Environmental Science ( 2022.3   Université Paris Cité )

  • Doctor of Philosophy ( 2022.3   The Graduate University for Advanced Studies )

Research Interests

  • Atmosphere-ground coupling

  • Elastic properties of meteorites

  • Lunar impact flash

  • Seismic Scattering

  • Seismic wave propagation simulation

  • Planetary Seismology

Education

  • The Graduate University for Advanced Studies   物理科学研究科   宇宙科学専攻

    2017.4 - 2022.3

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    Country： Japan

    Notes： 博士(理学)

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  • Université Paris Cité   École doctorale Sciences de la Terre et de l’environnement et physique de l’Univers  

    2019.9 - 2022.3

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    Country： France

    Notes： Doctor of Earth Science

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  • Tokyo Gakugei University   教育学部   環境総合科学課程自然環境科学専攻

    2013.4 - 2017.3

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    Country： Japan

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Research History

  • Okayama University   The Institute for Planetary Materials   Associate Professor

    2025.2

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  • Institut de Physique du Globe de Paris   Visiting Researcher – JSPS

    2023.9 - 2024.8

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    Country：France

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  • Japan Aerospace Exploration Agency   Institute of Space and Astronautical Science   Inter-University Research System Researchers

    2023.3

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  • The University of Tokyo   Earthquake Research Institute   JSPS Postdoctoral Fellow

    2022.4 - 2025.1

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  • The University of Tokyo   Earthquake Research Institute   Visiting researcher

    2025.2

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  • Core member of DraGMet SEIS team for NASA's Titan Exploration mission Dragonfly

    2022.4

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  • Initial sample analysis team of JAXA's Hayabusa2 mission

    2021.4 - 2023.5

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  • Bourse du Gouvernement Français

    2019.8 - 2021.3

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    Country：France

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  • NASA's Mars exploration mission InSight: Science Team Member

    2019.6 - 2022.12

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  • Tobitate! (Leap for Tomorrow) Young Ambassador Program (10th generation)

    2019.2

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Professional Memberships

  • European Geosciences Union

    2022.12

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  • The Seismological Society of Japan

    2022.7

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  • Japan Geoscience Union

    2017.5

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  • Japan Planetary Science Society

    2016

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Committee Memberships

  • The international symposium, MISASA VIII   Local Organizing Committee  

    2025.2 - 2025.3   

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  • Symposium on Planetary Science   Moon Splinter: Science Organizing Committee  

    2024.9   

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  • ISAS Planetary Exploration Workshop   Moon Splinter: Science Organizer Committee  

    2023.8   

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  • Japan Geoscience Union Meeting   Lunar Science and Exploration Session Convener  

    2022.10   

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    Committee type：Academic society

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  • 月地殻研究会   世話人  

    2022.8   

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Papers

  • New Views of Lunar Seismicity Brought by Analysis of Newly Discovered Moonquakes in Apollo Short-Period Seismic Data (Editor's Highlight) Reviewed

    Keisuke Onodera

    Journal of Geophysical Research: Planets   129 ( 7 )   2024.7

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1029/2023JE008153

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  • Activation of the Japanese Lunar Science Community - FY2023 Activity Report -

    K. Onodera, K. Saiki, H. Nagaoka, Y. Nakauchi, R. Nishitani, M. Ohtake, T. Morota

    Yuseijin   33 ( 2 )   201 - 207   2024.6

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    Authorship：Lead author,　Corresponding author  

    DOI： 10.14909/yuseijin.33.2_201

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  • Description of Martian convective vortices observed by InSight and implications for vertical vortex structure and subsurface physical properties Reviewed

    Keisuke Onodera, Kiwamu Nishida, Taichi Kawamura, Naomi Murdoch, Mélanie Drilleau, Ryoji Otsuka, Ralph Lorenz, Anna Horleston, Rudolf Widmer-Schnidrig, Martin Schimmel, Sebastien Rodriguez, Sebastian Carrasco, Satoshi Tanaka, Clement Perrin, Philippe Lognonné, Aymeric Spiga, Don Banfield, Mark Panning, William Bruce Banerd

    Journal of Geophysical Research: Planets   128 ( 8 )   2023.8

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    Convective vortices (whirlwinds) and dust devils (dust-loaded vortices) are one of the most common phenomena on Mars. They reflect the local thermodynamical structure of the atmosphere and are the driving force of the dust cycle. Additionally, they cause an elastic ground deformation, which is useful for retrieving the subsurface rigidity. Therefore, investigating convective vortices with the right instrumentation can lead to a better understanding of the Martian atmospheric structures as well as the subsurface physical properties. In this study, we quantitatively characterized the convective vortices detected by NASA's InSight (∼13,000 events) using meteorological (e.g., pressure, wind speed, temperature) and seismic data. The evaluated parameters, such as the signal-to-noise ratio, event duration, asymmetricity of pressure drop profiles, and cross-correlation between seismic and pressure signals, are compiled as a catalog. Using these parameters, we investigated (a) the vortex structure and (b) the subsurface physical properties. Regarding the first topic, we tried to illustrate the vertical vortex structure and its link to the shape of the pressure profiles by combining the asymmetrical features seen in the observed pressure drops and the terrestrial observations of dust devils. Our results indicate that most of the vortices move with the wall tilted in the advection direction. Concerning the second topic, selecting the highly correlated events between pressure perturbation and ground response, we estimated the subsurface rigidity at the InSight landing site down to 100 m depth. Our results indicate that the subsurface structure can be modeled with two layers having a transition at 5–15 m depth.

    DOI： 10.1029/2023JE007896

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  • Seismic scattering and absorption properties of Mars estimated through coda analysis on a long-period surface wave of S1222a marsquake Reviewed

    Keisuke Onodera, Takuto Maeda, Kiwamu Nishida, Taichi Kawamura, Ludovic Margerin, Sabrina Menina, Philippe H. Lognonne, William Bruce Banerdt

    Geophysical Research Letters   50 ( 13 )   2023.7

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：Authorea, Inc.  

    <p id="p1">On May 4 2022, the seismometer on Mars observed thelargest marsquake (S1222a) during its operation. One of the mostspecific features of S1222a is the long event duration lasting more than8 hours from the occurrence, in addition to the clear appearance of bodyand surface waves. As demonstrated on Earth, by modeling a long-lastingand scattered surface wave with the radiative transfer theory, weestimated the scattering and intrinsic quality factors of Mars(Q and Q). This study especiallyfocused on the frequency range between 0.05 - 0.09 Hz, whereQ and Q have not been constrained yet.Our results revealed that Q = 1000 - 1500 andQ = 30 - 500. By summarizing the MartianQ and Q estimated so far and bycomparing them with those of other celestial bodies, we found that,overall, the Martian scattering and absorption properties showedEarth-like values.</p>

    DOI： 10.1029/2022GL102716

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  • Activation of the Japanese Lunar Science Community – Activity report in FY2022

    K. Onodera, R. Nishitani, H. Nagaoka, M. Ohtake, T. Morota

    Yuseijin   32 ( 2 )   153 - 157   2023.6

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    Authorship：Lead author,　Corresponding author  

    DOI： 10.14909/yuseijin.32.2_153

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  • Quantitative evaluation of the lunar seismic scattering and comparison between the Earth, Mars, and the Moon Reviewed

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T Maeda

    Journal of Geophysical Research: Planets   127 ( 12 )   2022.12

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union (AGU)  

    Abstract

    The intense seismic scattering seen in Apollo lunar seismic data is one of the most characteristic features, making the seismic signals much different from those observed on the Earth. The scattering is considered to be attributed to subsurface heterogeneity. While the heterogeneous structure of the Moon reflects the past geological activities and evolution processes from the formation, the detailed description remains an open issue. Here, we present a new model of the subsurface heterogeneity within the upper lunar crust derived through a full 3D seismic wave propagation simulation. Our simulation successfully reproduced the Apollo seismic observations, leading to a significant update of the scattering properties of the Moon. The results showed that the scattering intensity of the Moon is about 10 times higher than that of the heterogeneous region on the Earth. The quantified scattering parameters could give us a constraint on the surface evolution process of the Moon and enable the comparative study for answering a fundamental question of why the seismological features are different on various planetary bodies.

    DOI： 10.1029/2022je007558

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  • Numerical Simulation of Lunar Seismic Wave Propagation: Investigation of Subsurface Scattering Properties Near Apollo 12 Landing Site Reviewed

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    Journal of Geophysical Research: Planets   126 ( 3 )   2021.3

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union ({AGU})  

    Abstract

    One of the most critical issues associated with the analysis of lunar seismic data is the intense scattering, which prevents precise seismic phase identifications, thereby resulting in poor constraints on the internal structure of the Moon. Although some studies estimated subsurface scattering properties from analyses of the Apollo seismic data, the properties have large uncertainties and are still open issues to be resolved to improve the inner structure model of the Moon. While the previous studies tried to constrain the scattering features within the lunar crust mainly from data analysis, this study estimated them from a numerical approach. We constrained the scattering properties near Apollo 12 landing site by conducting seismic wave propagation simulations under various parameter settings and comparing the synthetics with the data. As a result, we succeeded in reproducing seismic signals excited by the Apollo artificial impacts. This led to a constraint on the scattering properties, such as typical scale and thickness of heterogeneity, around the Apollo 12 landing site. The derived structure suggests that the intense scattering structure exists down to 20 km at the northern portion of the region of the Apollo 12 landing site, and to 10 km at the southern region from the landing site. In addition, our model requires a smaller P‐ and S‐wave velocity ratio (1.2–1.4) compared with those conventionally considered (&gt;1.73). This implies a dry and porous environment consistent with laboratory measurements of terrestrial samples and reasonable with the generalized lunar environment.

    DOI： 10.1029/2020JE006406

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    Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2020JE006406

  • Low dispersion spectra of lunar impact flashes Reviewed

    Masahisa Yanagisawa, Yuki Uchida, Seiya Kurihara, Shinsuke Abe, Ryota Fuse, Satoshi Tanaka, Keisuke Onodera, Taichi Kawamura, Ryuhei Yamada

    Icarus   116480 - 116480   2025.1

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.icarus.2025.116480

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  • cm-sized Particles of Active Asteroid Phaethon investigated from Lunar Impact Flashes caused by Geminid Meteor Shower Reviewed

    S. Abe, M. Yanagisawa, K. Onodera

    Yuseijin   33 ( 3 )   262 - 269   2024.9

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    Authorship：Last author   Publishing type：Research paper (scientific journal)  

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  • The in-situ evaluation of the SEIS noise model Reviewed

    B. Pino, D. Mimoun, N. Murdoch, K. Onodera, C. Johnson, A. Mittelhoz, M. Drilleau, A. Sto, L. Pou, S. de Raucour, P. Lognonné, R. Widmer-Schnideig, L. Lange, M. Panning, W. B. Banerd

    Space Science Reviews   220 ( 26 )   2024.3

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s11214-024-01056-3

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  • Installation of a Non-Atmospheric Exposure X-ray CT Analysis System at JAXA Curation Facility

    R. Kanemaru, T. Yada, R. Tahara, Y. Iwai, H. Nakayama, T. Ishizaki, R. Fukai, K. Onodera, Y. Yasuda, M. Nishimura, K. Sakamoto, Y. Hitomi, K. Hatakeda, M. Fukushima, K. Kumagai, T. Ojima, M. Abe, T. Okada, T. Usui

    Yuseijin   2024.3

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    Publishing type：Research paper (scientific journal)  

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  • Plumes of water ice/gas mixtures observed at the lunar polar region Reviewed

    M. Ohtake, Y. Nakauchi, S. Tanaka, M. Yamamoto, K. Onodera, H. Nagaoka, R. Nishitani

    The Astrophysical Journal   2024.2

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.3847/1538-4357/ad1be3

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  • Investigating diurnal and seasonal turbulence variations of the Martian atmosphere using a spectral approach Reviewed

    N. Murdoch, A. E. Sco, D. Mimoun, B. Pino, A. Chatain, A. Spiga, O. Temel, J. P. Garcia, K. Onodera, R. Lorenz, M. Gillier, C. Newman, R. F. Garcia, L. Lange, D. Banfield

    The Planetary Science Journal   4 ( 222 )   2023.11

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.3847/PSJ/ad06a9

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  • Evaluation of S1222a Source Parameters Based on Site Effect Simulation and Implication for the Event Origin Reviewed

    Wanbo Xiao, Taichi Kawamura, Zongbo Xu, Sebastián Carrasco, Keisuke Onodera, Grégory Sainton, Philippe Lognonné, Yanbin Wang, Brigitte Knapmeyer-Endrun, William Bruce Banerd

    Geophysical Research Letters   50 ( 13 )   2023.7

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1029/2023GL103429

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  • Stratification of Heterogeneity in the Lithosphere of Mars From Envelope Modeling of Event S1222a and Near Impacts: Interpretation and Implications for Very‐High‐Frequency Events Reviewed

    S. Menina, L. Margerin, T. Kawamura, G. Heller, M. Drilleau, Z. Xu, M. Calvet, R. F. Garcia, B. Knapmeyer‐Endrun, S. Carrasco, K. Onodera, P. Lognonné, A. Stott, W. B. Banerdt

    Geophysical Research Letters   50 ( 7 )   2023.4

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    Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union (AGU)  

    DOI： 10.1029/2023gl103202

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  • Modeling Seismic Recordings of High‐Frequency Guided Infrasound on Mars Reviewed

    Zongbo Xu, Marouchka Froment, Raphaël F. Garcia, Éric Beucler, Keisuke Onodera, Taichi Kawamura, Philippe Lognonné, William Bruce Banerdt

    Journal of Geophysical Research: Planets   127 ( 11 )   2022.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union (AGU)  

    DOI： 10.1029/2022je007483

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    Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2022JE007483

  • Empirical H/V spectral ratios at the InSight landing site and implications for the martian subsurface structure Reviewed

    S. Carrasco, B. Knapmeyer-Endrun, L. Margerin, C. Schmelzbach, K. Onodera, L. Pan, P. Lognonné, S. Menina, D. Giardini, E. Stutzmann, J. Clinton, S. Stahler, M. Schimmel, M. Golombek, M. Hobiger, M. Hallo, S. Kedar, W. B. Banerdt

    Geophysical Journal International (in press)   232 ( 2 )   1293 - 1310   2022.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press ({OUP})  

    <jats:title>SUMMARY</jats:title>
    <jats:p>The horizontal-to-vertical (H/V) spectral ratio inversion is a traditional technique for deriving the local subsurface structure on Earth. We calculated the H/V from the ambient vibrations at different wind levels at the InSight landing site, on Mars, and also computed the H/V from the S-wave coda of the martian seismic events (marsquakes). Different H/V curves were obtained for different wind periods and from the marsquakes. From the ambient vibrations, the recordings during low-wind periods are close to the instrument self-noise level. During high-wind periods, the seismic recordings are highly contaminated by the interaction of the lander with the wind and the martian ground. Therefore, these recordings are less favourable for traditional H/V analysis. Instead, the recordings of the S-wave coda of marsquakes were preferred to derive the characteristic H/V curve of this site between 0.4 and 10 Hz. The final H/V curve presents a characteristic trough at 2.4 Hz and a strong peak at 8 Hz. Using a full diffuse wavefield approach as the forward computation and the Neighbourhood Algorithm as the sampling technique, we invert for the 1-D shear wave velocity structure at the InSight landing site. Based on our inversion results, we propose a strong site effect at the InSight site to be due to the presence of a shallow high-velocity layer (SHVL) over low-velocity units. The SHVL is likely placed below a layer of coarse blocky ejecta and can be associated with Early Amazonian basaltic lava flows. The units below the SHVL have lower velocities, possibly related to a Late Hesperian or Early Amazonian epoch with a different magmatic regime and/or a greater impact rate and more extensive weathering. An extremely weak buried low velocity layer (bLVL) between these lava flows explains the data around the 2.4 Hz trough, whereas a more competent bLVL would not generate this latter feature. These subsurface models are in good agreement with results from hammering experiment and compliance measurements at the InSight landing site. Finally, this site effect is revealed only by seismic events data and explains the larger horizontal than vertical ground motion recorded for certain type of marsquakes.</jats:p>

    DOI： 10.1093/gji/ggac391

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  • The mechanical properties of the Martian soil at the InSight landing site Invited Reviewed

    P. M. Delage, E. Marteau, C. Vrettos, M. P. Golombek, V. Asan-Mangold, W. B. Banerdt, M. Grott, K. Hurst, P. Lognonné, N. Murdoch, S. Piqueux, C. Schmelbach, T. Spohn, N. Warner, L. Widmer-Lange, M. Lemmon, N. Mueller, K. Onodera, J. Robertsson, D. Sollberger, S. Stahler, N. Verdier, N. R. Williams

    Proceeedings 20th International Conference on Soil Mechanics and Geotechnical Engineering   2022.5

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    Publishing type：Research paper (international conference proceedings)  

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  • Numerical Simulations of the Apollo S‐IVB Artificial Impacts on the Moon Reviewed

    A. Rajšić, K. Miljković, N. Wójcicka, G. S. Collins, K. Onodera, T. Kawamura, P. Lognonné, M. A. Wieczorek, I. J. Daubar

    Earth and Space Science   8 ( 12 )   2021.12

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    Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union ({AGU})  

    DOI： 10.1029/2021EA001887

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  • Simulation of Seismic Wave Propagation on Asteroid Ryugu Induced by The Impact Experiment of The Hayabusa2 Mission: Limited Mass Transport by Low Yield Strength of Porous Regolith Reviewed

    G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, H. Yano, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima

    Journal of Geophysical Research: Planets   126 ( 2 )   2021.2

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    Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union ({AGU})  

    Seismic shaking has been regarded as an essential source of resurfacing on asteroids. The Small Carry-on Impactor (SCI) operation on Hayabusa2 has been expected to be a unique opportunity for testing in situ seismic shaking whose energy is sufficiently large to excite observable surface modification. However, no obvious regolith hopping was identified even immediately outside of the crater formed by the SCI impact. To understand this discrepancy from the expectation, we simulate seismic wave propagation on Ryugu with a wide range of surface material properties and evaluate maximum acceleration on the surface. Numerical results reveal that low-quality factor or low seismic efficiency is required to explain the lack of geomorphological change after the SCI experiment. Considering that scattering under anhydrous conditions cannot efficiently dissipate energy, such a low-quality factor is not plausible. The weak yield strength in porous materials can efficiently decrease seismic wave energies, making the apparent seismic efficiency extremely low. Based on this hypothesis, we propose a formulation of surface mobility on asteroids that considers the physical properties of regolith. We consistently estimate the occurrence of seismic shaking with the existence of unstable boulders on Ryugu.

    DOI： 10.1029/2020JE006594

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  • Low dispersion spectra of lunar impact flashes in 2018 Geminids Reviewed

    Masahisa Yanagisawa, Yuki Uchida, Seiya Kurihara, Shinsuke Abe, Ryota Fuse, Satoshi Tanaka, Keisuke Onodera, Fumi Yoshida, Hsin-Chang Chi, Zhong-Yi Lin, Jim Lee, Taichi Kawamura, Ryuhei Yamada

    Planetary and Space Science   195   105131 - 105131   2021.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

    DOI： 10.1016/j.pss.2020.105131

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  • A New Crater Near InSight: Implications for Seismic Impact Detectability on Mars Reviewed

    I. J. Daubar, P. Lognonné, N. A. Teanby, G. S. Collins, J. Clinton, S. Stähler, A. Spiga, F. Karakostas, S. Ceylan, M. Malin, A. S. McEwen, R. Maguire, C. Charalambous, K. Onodera, A. Lucas, L. Rolland, J. Vaubaillon, T. Kawamura, M. Böse, A. Horleston, M. Driel, J. Stevanović, K. Miljković, B. Fernando, Q. Huang, D. Giardini, C. S. Larmat, K. Leng, A. Rajšić, N. Schmerr, N. Wójcicka, T. Pike, J. Wookey, S. Rodriguez, R. Garcia, M. E. Banks, L. Margerin, L. Posiolova, B. Banerdt

    Journal of Geophysical Research: Planets   125 ( 8 )   2020.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union (AGU)  

    DOI： 10.1029/2020je006382

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    Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2020JE006382

  • Kojima-1Lb Is a Mildly Cold Neptune around the Brightest Microlensing Host Star Reviewed

    A. Fukui, D. Suzuki, N. Koshimoto, E. Bachelet, T. Vanmunster, D. Storey, H. Maehara, K. Yanagisawa, T. Yamada, A. Yonehara, T. Hirano, D. P. Bennett, V. Bozza, D. Mawet, M. T. Penny, S. Awiphan, A. Oksanen, T. M. Heintz, T. E. Oberst, V. J, S. Bejar, N. Casasayas-Barris, G. Chen, N. Crouzet, D. Hidalgo, P. Klagyivik, F. Murgas, N. Narita, E. Palle, H. Parviainen, N. Watanabe, N. Kusakabe, M. Mori, Y. Terada, J. P. de Leon, A. Hernandez, R. Luque, M. Monelli, P. Montanes-Rodriguez, J. Prieto-Arranz, K. L. Murata, S. Shugarov, Y. Kubota, C. Otsuki, A. Shionoya, T. Nishiumi, A. Nishide, M. Fukagawa, K. Onodera, S. Villanueva Jr, R. A. Street, Y. Tsapras, M. Hundertmark, M. Kuzuhara, M. Fujita, C. Beichman, J.-P. Beaulieu, R. Alonso, D. E. Reichar, N. Kawai, M. Tamura

    The Astronomical Journal   158 ( 5 )   2019.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing Ltd  

    We report the analysis of additional multiband photometry and spectroscopy and new adaptive optics (AO) imaging of the nearby planetary microlensing event TCP J05074264+2447555 (Kojima-1), which was discovered toward the Galactic anticenter in 2017 (Nucita et al.). We confirm the planetary nature of the light-curve anomaly around the peak while finding no additional planetary feature in this event. We also confirm the presence of apparent blending flux and the absence of significant parallax signal reported in the literature. The AO image reveals no contaminating sources, making it most likely that the blending flux comes from the lens star. The measured multiband lens flux, combined with a constraint from the microlensing model, allows us to narrow down the previously unresolved mass and distance of the lens system. We find that the primary lens is a dwarf on the K/M boundary (0.581 0.033 M<sub) located at 505 +/- 47 pc, and the companion (Kojima-1Lb) is a Neptune-mass planet (20.0 2.0 M-?) with a semimajor axis of <i au. This orbit is a few times smaller than those of typical microlensing planets and is comparable to the snow-line location at young ages. We calculate that the a priori detection probability of Kojima-1Lb is only 35%, which may imply that Neptunes are common around the snow line, as recently suggested by the transit and radial velocity techniques. The host star is the brightest among the microlensing planetary systems (K-s = 13.7), offering a great opportunity to spectroscopically characterize this system, even with current facilities.

    DOI： 10.3847/1538-3881/ab487f

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MISC

  • Lunar Seismic Scattering Caused by Topographic Features and Megaregolith: Case Study at Szilard Crater Reviewed

    K. Onodera

    Proceedings of Lunar and Planetary Science Conference   56   1144   2025.2

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (international conference)  

    File： 1144.pdf

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  • Developing a Short-Period Seismometer for Dragonfly: The Instrumental Noise Assessment of Engineering Model Reviewed

    K. Onodera, H. Shiraishi, S. Tanaka, T. Kawamura, T. Mitani, H. Murakami, R. Yamada, M. Panning, K. Sotzen, R. Lorenz

    Proceedings of Lunar and Planetary Science Conference   56   1145   2025.2

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (international conference)  

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  • Newly Discovered Shallow Moonquakes: General Characteristics and Source Parameters Reviewed

    Keisuke Onodera

    Proceedings of EGU General Assembly 2024   2024.3

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (international conference)   Publisher：Copernicus GmbH  

    Seismic observation is a powerful tool to investigate the Earth&amp;#8217;s geological activities and internal structure and has also been applied to the Moon and Mars [e.g., Latham et al., 1969; Banerdt et al., 2020]. For the Moon, a seismic network was constructed on the nearside during the Apollo missions, and nearly eight years of observation provided us with more than 13,000 seismic events [Nakamura et al., 1981]. These events have contributed to understanding the seismicity rate on the Moon and its internal structure [e.g., Garcia et al., 2019; Nunn et al., 2020], both of which are important to know the current geological activity level and trace back to the thermal evolution in the past.In the Apollo lunar seismic observation, two types of seismometers were installed: Long-Period (LP) and Short-Period (SP) seismometers. While the LP sensor has sensitivity at 0.2 &amp;#8211; 1.5 Hz, the SP is sensitive at 1 &amp;#8211; 10 Hz [e.g., Nunn et al., 2020]. In previous studies, the LP data were mainly used. In fact, all the cataloged events were detected solely using the LP data [Nakamura et al., 1981]. On the other hand, because of numerous unnatural signals and/or spikey noises, the majority of SP data remained unanalyzed after the initial description of high-frequency quakes by Duennebier and Sutton (1974a, 1974b) [e.g., Frohlich and Nakamura, 2006; Knapmeyer-Endrun and Hammer, 2015]. This fact implies that there are potential seismic events only identifiable in the SP data, and the lunar seismicity might be underestimated.Lately, Onodera (2023) denoised all the SP data and performed an automatic event detection. As a result, he discovered about 22,000 new seismic events, including thermally driven quakes (thermal moonquakes), impact-induced events, and tectonic-related quakes (shallow moonquakes). While the former two types are useful to understand the surface evolution or degradation processes, the latter type is closely related to the seismic activity level of the Moon. Here, I focus on shallow moonquakes. In the past, since only 28 shallow moonquakes were identified, it was difficult to give a detailed description of their source mechanism, regionality, and correlation with tidal force. In this study, using the newly discovered 46 shallow moonquakes, I&amp;#8217;m trying to give new insights into this type of event.In the presentation, I will describe the general characteristics of newly discovered shallow moonquakes (e.g., waveforms and spectral features) and summarize the estimated source parameters (such as energy release, seismic moment, and body wave magnitude).&amp;#160;ReferencesBanerdt et al. (2020), Nat. Geosci., 13(3), 183-189.Duennebier and Sutton (1974a), JGR, 79(29), 4365-4374.Duennebier and Sutton (1974b), JGR, 79(29), 4351-4363.Frohlich and Nakamura (2006), Icarus, 185(1), 21-28.Garcia et al. (2019), Space Sci. Rev., 215(8), 50.Knapmeyer-Endrun and Hammer (2015), JGR Planets, 120 (10), 1620-1645.Latham et al. (1969), Science, 165(3890), 241-250.Nakamura et al. (1981), UTIG Technical Report, No. 118.Nunn et al. (2020), Space Sci. Rev., 216(5), 89.Onodera (2023), ESSOAr, DOI:&amp;#160;22541/essoar.169841663.38914436/v1

    File： EGU24-1694-print.pdf

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  • Seismic Detection of Atmospheric Gravity Waves on Mars Reviewed

    K. Onodera, K. Nishida, R. Widmer-Schnidrig, T. Kawamura, A. Spiga, J. Hernandez-Bernal, E. Stutzmann, Z. Xu, A. Horleston, M. Schimmel, N. Murdoch

    Proceedings of Lunar and Planetary Science Conference   55 ( 1121 )   2024.3

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  • Assessment of Lunar Seismicity Using Newly Discovered Shallow moonquakes Reviewed

    K. Onodera

    Proceedings of Lunar and Planetary Science Conference   55 ( 1077 )   2024.3

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  • Newly discovered moonquakes from Apollo short-period seismometer data Reviewed

    Keisuke Onodera, Yuki Imagawa, Satoshi Tanaka

    Proceedings of EGU General Assembly 2023   2023.2

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    &amp;lt;p&amp;gt;The beginning of planetary seismology dates back to the Apollo lunar seismic observations (1969 &amp;amp;#8211; 1977), where two types of seismometers were deployed at four places on the nearside of the Moon. The seismic observation package consisted of (i) two horizontal and one vertical long-period (LP) sensors and (ii) one vertical short-period (SP) sensor. About 8 years of observation brought us 13000 seismic events and contributed to the understanding of the internal structure and the seismicity of the Moon (see Nunn et al., 2020 and Garcia et al., 2019 for the recent review).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;On the other hand, because the existing moonquake catalog by Nakamura et al. (1981) builds on the LP data, it has been expected that there are potential events only observable in the SP data (Nakamura, 2021, &amp;lt;em&amp;gt;pers. comm.&amp;lt;/em&amp;gt;). Referring to the already cataloged events, shallow moonquakes and thermal moonquakes excite the energy at a high-frequency range more sensible with the SP sensor (&amp;gt; 1-2 Hz). Especially, shallow moonquakes being used to define the lunar seismicity (Banerdt et al., 2020), it is of great importance to investigate the SP data for re-evaluating the current seismic activities on the Moon.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;In this study, utilizing the re-archived Apollo lunar seismic data by Nunn et al. (2022), we searched for undetected moonquakes by looking into the coherence between the reference moonquakes and the SP time series. As a result, we succeeded in discovering seismic events that were not cataloged before. A new SP event catalog will be released with our future publication.&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;In the presentation, we will show the newly detected moonquakes and describe their characteristics.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;References&amp;lt;/p&amp;gt;&amp;lt;ul&amp;gt;&amp;lt;li&amp;gt;Banerdt et al. (2020), &amp;lt;em&amp;gt;Nat. Geosci.,&amp;lt;/em&amp;gt;13, 183&amp;amp;#8211;189.&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Garcia et al. (2019), &amp;lt;em&amp;gt;Space Sci. Rev.,&amp;lt;/em&amp;gt; 215, 50.&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Nakamura et al. (1981), &amp;lt;em&amp;gt;UTIG Technical Report&amp;lt;/em&amp;gt;, 18.&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Nunn et al. (2020), &amp;lt;em&amp;gt;Space Sci. Rev.,&amp;lt;/em&amp;gt; 216, 89.&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Nunn et al. (2022), &amp;lt;em&amp;gt;Planet. Sci. J.,&amp;lt;/em&amp;gt; 3 219.&amp;lt;/li&amp;gt;&amp;lt;/ul&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;

    File： EGU23-3719-print.pdf

    DOI： 10.5194/egusphere-egu23-3719

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  • Characterization of Martian Convective Vortices Using InSight's Seismic and Meteorological Data Reviewed

    K. Onodera, K. Nishida, T. Kawamura, N. Murdoch, R. Otsuka, M. Drilleau, M. Schimmel, S. Carrasco, G. Sainton, A. Horleston, S. Tanaka, T. Mitani, C. Perrin, E. Stutzmann, S. Rodriguez, R. Lorenz, A. Spiga, P. Lognonné, W.B. Banerdt

    Proceedings of Lunar and Planetary Science Conference   XXXXXIV   1345   2023.2

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  • Seismic Scattering and Attenuation Properties of Mars Estimated Through Coda Analysis of S1222a Marsquake Reviewed

    K. Onodera, T. Maeda, K. Nishida, T. Kawamura, S. Menina, L. Margerin, P. Lognonné, W. B. Banerdt

    XXXXXIV   1343   2023.2

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  • Multi-scale investigation of the InSight landing site on Mars using one-station seismology Reviewed

    Sebastian Carrasco, Brigitte Knapmeyer-Endrun, Ludovic Margerin, Eleonore Stutzmann, Martin Schimmel, Keisuke Onodera, Sabrina Menina, Wanbo Xiao, Zongbo Xu, Cedric Schmelzbach, Manuel Hobiger, Philippe Lognonné

    Proceedings of EGU General Assembly 2024   2024.3

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    The internal structure of a planet provides constraints for understanding its evolution and dynamics. In November 2018, the InSight spacecraft landed on Mars and deployed a set of geophysical instruments, including one seismological station. In this work, the subsurface structure at the InSight landing site (ILS) is explored, from the shallow subsurface to crustal depths, by applying single-station seismological techniques (SST) on martian ambient vibrations and seismic events data.The shallow subsurface at the ILS, in the order of meters, is investigated using the horizontal-to-vertical spectral ratios (HVSR) from the coda of martian seismic events. Assuming a fully diffuse wavefield, a nonlinear inversion using the conditional Neighbourhood Algorithm (NA) allowed to map the shallow subsurface at the ILS. Due to the non-uniqueness problem, different sets of models are retrieved. The 8 Hz HVSR peak can be explained by a Rayleigh wave resonance due to a shallow high-velocity layer, while the 2.4 Hz trough is explained by a P-wave resonance due to a buried low-velocity layer. The kilometer-scale subsurface was constrained by Rayleigh wave ellipticity measurements from large martian seismic events. The ellipticity measurements (0.03-0.07 Hz) were jointly inverted with P-to-s Receiver Functions and P-wave lag times from autocorrelations, to provide a subsurface model for the martian crust at the ILS. The joint inversion allowed the thickness and velocities of a new surface layer, previously proposed only conceptually, to be constrained by multiple seismological data. The HVSR in the 0.06-0.5 Hz frequency range from the coda of S1222a, the largest event ever recorded on Mars, suggests a gradual transition from shallow to crustal depths and consolidates the group of shallow subsurface models with the largest shear-wave velocities as the most compatible with the crustal structure.A comprehensive multi-scale model of the ILS subsurface is proposed. The ILS is characterized by the emplacement of a low-velocity regolith/coarse ejecta layer over a high-velocity Amazonian fractured lava flow (~2 km/s, ~30 m thick). A buried Late Hesperian-Amazonian sedimentary layer is deposited below (~450 m/s, ~30 m thick), underlain by a heavily weathered Early Hesperian lava flow. The latter overlays a thick, likely Noachian sedimentary layer that extends to a depth of 2-3 km. This shallow structure forms the first crustal layer derived from the joint inversion. Deeper crustal layers are consistent with other reported ILS models, with intracrustal discontinuities at 8-12 km and 18-23 km depth. The Moho depth at the ILS is found at 35-45 km depth. Shear-wave velocities above ~20 km depth are lower than 2.5 km/s, slower than in other regions of Mars, suggesting a higher alteration due to local processes or a different origin of the upper crust at the ILS. The proposed model is consistent with the geologic history of Mars and other independent observations, confirming the great potential of SST for multi-scale investigation of, e.g., other planetary bodies or understudied regions on Earth.

    File： EGU24-19431-print.pdf

    DOI： 10.5194/egusphere-egu24-19431

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  • Seismic observation on Titan with DragMet SEIS Reviewed

    T. Kawamura, H. Shiraishi, S. Tanaka, T. Mitani, K. Onodera, H. Murakami, R. Lorenz, M. Panning

    Proceedings of Lunar and Planetary Science Conference   55 ( 2161 )   2024.3

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  • Lateral variation of ground rigidity around the InSight landing site estimated through compliance analysis for convective vortices Reviewed

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura, K. Nishida

    Proceedings of Lunar and Planetary Science Conference   55 ( 1529 )   2024.3

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  • Statistical methods to categorise lunar seismic signals Reviewed

    A. Turner, S. Gulick, D. Trugman, F. Civilini, K. Onodera

    Proceedings of Lunar and Planetary Science Conference   55 ( 1423 )   2024.3

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  • Lunar crust thickness inferred by Apollo seismic data and GRAIL gravity data Reviewed

    X. Zhang, P. Lognonné, T. Kawamura, H. Samuel, Z. Xu, M. Drilleau, M. A. Wieczorek, K. Onodera

    Proceedings of Lunar and Planetary Science Conference   55 ( 1495 )   2024.3

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  • Natural Water Ejection from the Lunar Surface Identified at the Polar Regions Reviewed

    M. Ohtake, Y. Nakauchi, S. Tanaka, M. Yamamoto, K. Onodera, H. Nagaoka, R. Nishitani

    Proceedings of Lunar and Planetary Science Conference   XXXXXIV   1933   2023.2

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  • Scattering and attenuation properties of the Martian crust through the S1222a seismic event Reviewed

    Sabrina menina, Ludovic Margerin, Taïchi kawamura, Philippe Lognonné, Zongbo Xu, Keisuke Onodera, Marie Calvet, Raphaël Garcia

    Europlanet Science Congress   2022 ( 805 )   2022.9

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    &amp;lt;p&amp;gt;Since its deployment at the surface of Mars in 2019, the SEIS seismometer&amp;amp;#160;(Seismic Experiment for Interior Structure)&amp;amp;#160;of the NASA-InSight mission&amp;amp;#160;(Interior exploration using Seismic Investigations, Geodesy and Heat Transport)&amp;amp;#160;has detected hundreds of small magnitude seismic events. But recently, the seismic event S1222a of magnitude 4.9 which primarily contains energy above 0.1 Hz was reported by the Mars Quake Service.&amp;amp;#160;It is characterized by two temporally separated arrivals with a gradual beginning, a broad maximum and a very long decay lasting up to 1 hour. In this work, we propose to use seismic coda analysis on this specific event to explore the attenuation properties of Martian crust and to provide an Earth-Mars-Moon comparison.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;&amp;amp;#160;&amp;lt;/strong&amp;gt;&amp;lt;img src=&amp;quot;https://contentmanager.copernicus.org/fileStorageProxy.php?f=gnp.440e4b30a48269398582561/sdaolpUECMynit/2202CSPE&amp;amp;app=m&amp;amp;a=0&amp;amp;c=88739e312015e2983e1f465a79c2e86d&amp;amp;ct=x&amp;amp;pn=gnp.elif&amp;amp;d=1&amp;quot; alt=&amp;quot;&amp;quot; width=&amp;quot;1045&amp;quot; height=&amp;quot;535&amp;quot;&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Fig 1:&amp;lt;/strong&amp;gt; Envelope characteristics of the S1222a Broadband event. The data were collected on the VBB sensors with sampling rates of 20 samples per second. (a) Base 10 logarithm of energy envelopes normalized by the noise level as a function of time and fit of the coda decay (black dashed lines). The gray dashed line indicates signal-to-noise ratio (SNR) = 2. The different colors correspond to different frequency bands indicated in inset. The time t = 0 s corresponds to the first arrival. t&amp;lt;sub&amp;gt;P&amp;lt;/sub&amp;gt; and t&amp;lt;sub&amp;gt;S&amp;lt;/sub&amp;gt; refer to the arrival times of the first and second wave packets (red dashed lines). (b) Frequency dependence of Qc in the 0.4 &amp;amp;#8211;7.5 Hz frequency band. The color bar indicates the SNR measured on the horizontal components. The red and black dashed line shows the power-law fit Qc = 900f&amp;lt;sup&amp;gt;0.36&amp;lt;/sup&amp;gt;and Qc = 655f&amp;lt;sup&amp;gt;0.94&amp;lt;/sup&amp;gt; respectively (f is the frequency.).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;We employ basic multiple-scattering concepts to examine and to compare the energetic characteristics of the Earth, Martian and Lunar crust. We measured the coda quality factor Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt;, that characterizes the rate of decay of the seismogram envelope, to have a first view of the attenuation characteristics [1] (see fig 1.a). We performed a fit of the frequency dependence of Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; using a parameterization of the form Q&amp;lt;sub&amp;gt;c &amp;lt;/sub&amp;gt;= Q&amp;lt;sub&amp;gt;0 &amp;lt;/sub&amp;gt;f&amp;lt;sup&amp;gt;n&amp;lt;/sup&amp;gt;. Based on linear least-squares applied to the logarithm of Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; (see fig.1.b), we obtain two very distinct regimes of Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; as a function of the frequency f. In the [0.4 Hz - 1.5 Hz] range Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; = 900 and n &amp;amp;#160;0.36, when at higher frequency, Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; = 655 and n &amp;amp;#160;0.94 This result is specific to Mars and could be related to the stratification of the attenuation properties in the Martian crust. The quasi-linear frequency increase of Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; seen in [2.5 Hz &amp;amp;#8211; 7.5 Hz] range suggests that the coda decay is governed by a frequency independent attenuation time. Similar values of Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; and n, in this frequency range, were reported by using a Very High Frequency group events [2] (see Fig 2 in orange and red).&amp;amp;#160;&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;&amp;lt;img src=&amp;quot;https://contentmanager.copernicus.org/fileStorageProxy.php?f=gnp.28caa570a48267998582561/sdaolpUECMynit/2202CSPE&amp;amp;app=m&amp;amp;a=0&amp;amp;c=17da6719abe3b25bec4dad14c0df220a&amp;amp;ct=x&amp;amp;pn=gnp.elif&amp;amp;d=1&amp;quot; alt=&amp;quot;&amp;quot; width=&amp;quot;1025&amp;quot; height=&amp;quot;911&amp;quot;&amp;gt;&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Fig 2: &amp;lt;/strong&amp;gt;&amp;amp;#160;Coda attenuation as a function of the frequency for the Earth-cratons regions (green), the Earth-tectonics regions (bleu), the Moon (gray), Mars ( &amp;amp;#945;= 0 in red and &amp;amp;#945;= 1 in orange) and the S1222a BB event (black).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;amp;#160;&amp;amp;#160; In the case of the regional earthquakes on Earth, the frequency dependence of Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; is radically different between tectonic areas and shields. Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;varies from 100 to 400 in tectonic areas (blue) [e.g. 3] and from 600 to 1000 in shields areas (green) [e.g. 4], where the frequency exponent n is equal to 1 and 0.1-0.5 respectively. [5] report coda Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; values of 2400 at 0.5 Hz and possibly as large as 10000 at 7 Hz on the Moon (gray). This result suggests that Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; is a factor of 2 to 4 larger than on Mars when the frequency exponent n is more likely in the range of 0.4 &amp;amp;#8211; 0.6. To summarize, our Q&amp;lt;sub&amp;gt;c&amp;lt;/sub&amp;gt; measurements exhibit two different regimes of frequency dependence. At higher frequency, the Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; and n values&amp;lt;sub&amp;gt;&amp;lt;/sub&amp;gt;are very close to the one found on Very High Frequency group events. The unique combination of high Q&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; with a frequency exponent n =1 also distinguishes very clearly Mars from the Earth. By the time of the meeting, we hope to present the first results of envelope modeling based on elastic radiative transport in a stratified medium to quantify the contribution of the scattering and the absorption to the total attenuation.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;&amp;amp;#160;&amp;amp;#160;&amp;amp;#160; &amp;lt;/strong&amp;gt;&amp;lt;strong&amp;gt;References:&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;[1] Aki, K. (1969). Analysis of the seismic coda of local earthquakes as scattered waves.&amp;amp;#160;&amp;lt;em&amp;gt;Journal of geophysical research&amp;lt;/em&amp;gt;,&amp;amp;#160;&amp;lt;em&amp;gt;74&amp;lt;/em&amp;gt;(2), 615-631.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;[2] Menina et al. (2021), Energy Envelope and Attenuation Characteristics of High&amp;amp;#8208;Frequency (HF) and Very&amp;amp;#8208;High&amp;amp;#8208;Frequency (VF) Martian Events, Bulletin of the Seismological Society of America (2021) 111 (6): 3016&amp;amp;#8211;3034.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;[3] Mayeda, K., Koyanagi, S., Hoshiba, M., Aki, K., &amp;amp; Zeng, Y. (1992). A comparative study of scattering, intrinsic, and coda Q&amp;amp;#8722; 1 for Hawaii, Long Valley, and central California between 1.5 and 15.0 Hz.&amp;amp;#160;&amp;lt;em&amp;gt;Journal of Geophysical Research: Solid Earth&amp;lt;/em&amp;gt;,&amp;amp;#160;&amp;lt;em&amp;gt;97&amp;lt;/em&amp;gt;(B5), 6643-6659.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[4] Mitchell, B, J et al. (2008). A continent-wide map of 1-Hz Lg coda Q variation across Eurasia and its relation to lithospheric evolution. Journal of Geophysical Research: Solid Earth, &amp;lt;em&amp;gt;113&amp;lt;/em&amp;gt;(B4).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[5] Gillet, K., et al (2017). Scattering attenuation profile of the Moon: Implications for shallow moonquakes and the structure of the megaregolith.&amp;amp;#160;&amp;lt;em&amp;gt;Physics of the Earth and Planetary Interiors&amp;lt;/em&amp;gt;,&amp;amp;#160;&amp;lt;em&amp;gt;262&amp;lt;/em&amp;gt;, 28-40.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;amp;#160;&amp;lt;/p&amp;gt;

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    DOI： 10.5194/epsc2022-805

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  • Reprocessing Apollo seismic data

    Xiang Zhang, Philippe Lognonné, Taichi Kawamura, Henri Samuel, Zongbo Xu, Grégory Sainton, Marouchka Froment, Keisuke Onodera

    Europlanet Science Congress   2022 ( 846 )   2022.9

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    &amp;lt;p&amp;gt;The Apollo Passive Seismic Experiments recorded more than 13000 events on the Moon during 1969-1977 [1]. However, not all of these events were used in our previous studies on the Moon due to the degradation of the quality of the recorded data (Figure 1A). To make better use of Apollo seismic data, we propose several new methods to reprocess it. First, since Apollo seismic records sometimes contain invalid data in every station and component (including the short period component), we removed these invalid data from raw Apollo records using time and ground station number. Then we removed several special spikes with the help of amplitude histogram. This enables us to compute the envelopes for a larger number of moonquake events. Acceleration and displacement step responses are used to fit glitches using the Lagrange multiplier method. The &amp;amp;#8216;glitches&amp;amp;#8217; we term here are artifact one-sided pulses in the raw data. We find that the instrument response parameters vary with time. So, we determined the instrument response parameters with the calibration signal and removed it near the event. Finally, we used the smoothed envelope to detect the single spike (spike with only one point) and removed it when exceeds the envelope. These new processing steps lead to considerably cleaner Apollo data (Figure 1B), yield a more accurate arrival time reading, and result in an envelope that reflects more realistic waveform characteristics. We expect that additional moonquake records will become available with these methods for future research. Further study of the instrument response variations of the Apollo seismometer will also provide a reference for the new lunar seismometers to be deployed in upcoming space missions.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;img src=&amp;quot;&amp;quot; alt=&amp;quot;&amp;quot; /&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Figure 1. An example of a comparison plot before (A) and after (B) Apollo moonquake data processing.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Reference:&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[1] Nunn, C., Garcia, R. F., Nakamura, Y., Marusiak, A. G., Kawamura, T., Sun, D., et al. (2020), Lunar seismology: A data and instrumentation review. Space Science Reviews, 216(5), 89. doi:10.1007/s11214-020-00709-3&amp;lt;/p&amp;gt;

    File： EPSC2022-846-print.pdf

    DOI： 10.5194/epsc2022-846

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  • Development of elastic wave velocity measurement technology for Hayabusa2 return sample.

    猪裕太, 猪裕太, 田中智, 田中智, 小野寺圭祐, 小野寺圭祐, 川村太一, 嶌生有理, 中嶋大輔, 岩田隆浩, 岩田隆浩, 中村智樹, 森田朋代, 菊入瑞葉, 天野香菜, 加川瑛一, 圦本尚義, 野口高明, 岡崎隆司, 薮田ひかる, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一

    日本地球惑星科学連合大会予稿集(Web)   2022   2022

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  • Numerical modelling of the artificial impacts on the Moon Reviewed

    Andrea Rajšić, Katarina Miljković, Natalia Wojcicka, Keisuke Onodera, Gareth Collins, Taichi Kawamura, Philipe Lognonne, Mark Wieczorek, Ingrid Daubar

    Europlanet Science Congress   15 ( 710 )   2021.7

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    Publisher：Copernicus GmbH  

    &amp;lt;div&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Introduction: &amp;lt;/strong&amp;gt;A possible source of seismic activity on Mars is meteoroid impacts [5]. Nevertheless, in the first Martian year of the the NASA InSight Mission [2] no signal has been unambiguously associated with an impact event [4]. This calls for further investigation of meteorite strikes and the relationship between impact conditions and the seismic signals they generate. One of the ways to understand the seismic signature of meteoroid impacts is to analyze already existing data from other planetary bodies.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;During the Apollo era, over one thousand seismic signals were recorded on the Moon [e.g. 12]. Part of the Apollo seismic experiments were artificial impacts of Lunar modules (LM) and Saturn booster drops (S-IVB). Artificial impacts are considered large scale controlled experiments, because the exact position of the crater and the impactor parameters that made it are known. In this work, we model S-IVB artificial impacts on the Moon, using the iSALE-2D shock physics hydrocode [e.g., 1, 3, 21]. We simulated both the crater formation and the pressure wave propagation and attenuation. We examined size of the crater, cratering efficiency, impact momentum transferred to the target and two seismic parameters: seismic efficiency and seismic moment, and compared these measurements to the existing data [e.g., 10, 8, 7].&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;One challenge with modelling the S-IVB artificial impacts is the realistic presentation of the projectile. The Apollo S-IVB boosters were hollow aluminum cylinders, with a very low bulk density of 23 gcm&amp;lt;em&amp;gt;&amp;lt;sup&amp;gt;&amp;amp;#8722;&amp;lt;/sup&amp;gt;&amp;lt;/em&amp;gt;&amp;lt;sup&amp;gt;3&amp;lt;/sup&amp;gt; and mass of 14 t. The booster was 17.8 m long and 6.6 m in radius. The impact speed at the ground level was 2.54-2.66 kms&amp;lt;em&amp;gt;&amp;lt;sup&amp;gt;&amp;amp;#8722;&amp;lt;/sup&amp;gt;&amp;lt;/em&amp;gt;&amp;lt;sup&amp;gt;1&amp;lt;/sup&amp;gt;. The drop angle was reported to be between 13.2&amp;lt;em&amp;gt;&amp;lt;sup&amp;gt;&amp;amp;#9702;&amp;lt;/sup&amp;gt;&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt; &amp;lt;/em&amp;gt;and 35&amp;lt;em&amp;gt;&amp;lt;sup&amp;gt;&amp;amp;#9702;&amp;lt;/sup&amp;gt;&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt; &amp;lt;/em&amp;gt;from vertical. [e.g., 14, 19]. There were five such impacts, and they all impacted into mare basalts and made elliptical craters (long and short axis in between 29.71 m and 38.7 m) with a central mound (crater depth was roughly estimated to 2-3 m) [e.g., 14].&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Numerical modelling: &amp;lt;/strong&amp;gt;All simulations in this work used the iSALE-2D shock physics hydrocode [e.g., 1, 3, 21]. To exclude any influence of target properties, all simulations used the same uniform target model of a 44% porous basaltic regolith [20, 15]. The mass and impact velocity of the projectile in our simulations were the same in all simulations and consistent with the experi- ments. Given the axial symmetry of the mesh geometry employed, we investi- gated five simplified representations of the irregularly shaped projectile. Three cases had a geometry of right-cylinder, with 90% porosity and different dimen- sions: 1. 11.7 m radius and height 0.5 m; 2. 5.8 m radius and 2 m height; 3. 0.992 m radius and 16.7 m height. The last two cases were spheroids: one was non-porous aluminum sphere with 1.06 m radius and the other one was 90% porous and had a radius of 2.3 m [13,21]. To calculate momentum transfer, the vertical component of the seismic moment and seismic efficiency we use approaches described extensively in previous studies [9, 7, 20, 15].&amp;lt;/p&amp;gt;&amp;lt;/div&amp;gt;&amp;lt;p&amp;gt;Here, we focus only on the vertical component of the seismic moment Mz [11, 7, 20]. To calculate seismic efficiency we used the same approach described in numerous previous work [e.g., 9, 20, 15].&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Results: &amp;lt;/strong&amp;gt;The shape of the projectile has a substantial effect on crater for- mation but little effect on the seismic signature of the impact. The largest crater was formed in Case 3, while the best agreement with observed crater properties was provided by Case 1 (for depth) and Case 5 (diameter). The porosity of the projectile affected the size of the mound at the bottom of the crater, which supports the idea that the observed central mounds at the bottom of the ob- served craters are projectile remenants [14]. The seismic efficiency &amp;lt;em&amp;gt;k &amp;lt;/em&amp;gt;10&amp;lt;em&amp;gt;&amp;lt;sup&amp;gt;&amp;amp;#8722;&amp;lt;/sup&amp;gt;&amp;lt;/em&amp;gt;&amp;lt;sup&amp;gt;6&amp;lt;/sup&amp;gt; and seismic moment &amp;lt;em&amp;gt;M&amp;lt;sub&amp;gt;z&amp;lt;/sub&amp;gt; &amp;lt;/em&amp;gt;4 10&amp;lt;sup&amp;gt;10&amp;lt;/sup&amp;gt; Nm were of the same order of magnitude for all cases. This seismic efficiency is in agreement with lower estimates of [10], and the seismic moment is consistent with the scaling proposed in [17, 16, 20, 6].&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Conclusion: &amp;lt;/strong&amp;gt;We have successfully replicated the S-IVB artificial impacts on the moon with iSALE2D, producing craters that are consistent with obser- vations in their approximate dimensions and morphology. The simulations also constrain the seismic efficiency and seismic moment of the artificial impacts, which are relatively insensitive to the density and shape of the impactor. The low seismic efficiency determined here for artificial impacts on the Moon may help explain the non-detection of impacts by InSight in the first Martian year of operating. Moreover, the insensitivity of seismic moment to impactor density and shape suggests that results from the Apollo seismic experiment of these artificial impacts are useful analogs for small impacts on Mars that can be used to better inform their detectability by InSight [17, 16, 20, 6].&amp;lt;/p&amp;gt;&amp;lt;div&amp;gt;&amp;lt;p&amp;gt;[1]&amp;amp;#160;&amp;amp;#160; Amsden A.A. et al. 1980. Technical report.&amp;lt;/p&amp;gt;&amp;lt;/div&amp;gt;&amp;lt;p&amp;gt;[2] Banerdt B.W. et al. 2020. &amp;lt;em&amp;gt;Nature Geoscience&amp;lt;/em&amp;gt;, pages 1&amp;amp;#8211;7.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[3] Collins G.S. et a. 2004. &amp;lt;em&amp;gt;Meteoritics &amp;amp; Planetary Science&amp;lt;/em&amp;gt;, 39(2):217&amp;amp;#8211;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[4] Daubar I.J. et al. 2020. &amp;lt;em&amp;gt;Journal of Geophysical Resear&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;ch: Planets&amp;lt;/em&amp;gt; 125(8).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[5] Daubar I.J. et al. 2018. &amp;lt;em&amp;gt;Space Science Reviews&amp;lt;/em&amp;gt;, 214(8):1&amp;amp;#8211;68.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[6] Fernando B. et al. 2020&amp;lt;em&amp;gt; Journal of Geophys&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;ical Research: Planets&amp;lt;/em&amp;gt;.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[7] Gudkova T. et al. 2015. &amp;lt;em&amp;gt;Earth and Planetary Science Letters&amp;lt;/em&amp;gt;, 427:57&amp;amp;#8211;65.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[8] Gudkova TV et al. 2011. &amp;lt;em&amp;gt;Icarus&amp;lt;/em&amp;gt;, 211(2):1049&amp;amp;#8211;1065.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[9] Guldemeister &amp;amp; Wunnemann K.2017. &amp;lt;em&amp;gt;Icarus&amp;lt;/em&amp;gt;, 296:15&amp;amp;#8211;27.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[10] Latham G. et al. 1970. &amp;lt;em&amp;gt;Science&amp;lt;/em&amp;gt;, 170(3958):620&amp;amp;#8211;626.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[11] Lognonne P. et al. 2009. &amp;lt;em&amp;gt;Journal of &amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;Geophysical Research: Planets&amp;lt;/em&amp;gt;, 114(E12).&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[12] Lognonne &amp;amp; &amp;amp;#160;Mosser B.1993. &amp;amp;#160;&amp;lt;em&amp;gt;Surveys&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt; &amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;in &amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;Geophysics&amp;lt;/em&amp;gt;, 14(3):239&amp;amp;#8211;302.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[13] Lundborg N. 1968. &amp;lt;em&amp;gt;International Journal of &amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;Rock Mechanics and Mining Sciences &amp;amp; Geomechanics Abstracts&amp;lt;/em&amp;gt;, volume 5, pages 427&amp;amp;#8211;454.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[14] Plescia J.B. et al. 2016. &amp;lt;em&amp;gt;Planetary and Space Science&amp;lt;/em&amp;gt;, 124:15&amp;amp;#8211;35.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[15] Rajsic A., et al. 2021. &amp;lt;em&amp;gt;Journal of Geophysical Research: Planets&amp;lt;/em&amp;gt;.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[16] Teanby N.A. 2015. &amp;lt;em&amp;gt;Icarus&amp;lt;/em&amp;gt;, 256:49&amp;amp;#8211;62.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[17] Teanby N.A. &amp;amp; Wookey J. 2011. &amp;lt;em&amp;gt;Physics of the Earth and Planetary Interiors&amp;lt;/em&amp;gt;, 186(1-2):70&amp;amp;#8211;80.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[18] Tillotson J.H. Technical report.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[19] Wagner RV., et al. 2017. &amp;lt;em&amp;gt;Icarus&amp;lt;/em&amp;gt;, 283:92&amp;amp;#8211;103,&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[20] Wojcicka N. et al. 2020. &amp;lt;em&amp;gt;Journal of Geophys&amp;lt;/em&amp;gt;&amp;lt;em&amp;gt;ical Research: Planets&amp;lt;/em&amp;gt;. 125(10)&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;[21] Wunnemann K., et al. 2006. &amp;lt;em&amp;gt;Icarus&amp;lt;/em&amp;gt; 180(2).&amp;lt;/p&amp;gt;

    File： EPSC2021-710-print.pdf

    DOI： 10.5194/epsc2021-710

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  • Implication for subsurface scattering structure near Apollo 12 landing site from seismic wave propagation simulation Reviewed

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    Proceedings of Lunar and Planetary Science Conference   XXXXXI ( 1277 )   2020.3

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  • Investigation on putative explanation for SEIS/InSight unknown events from rock avalanches and rockfalls and comparison with Alpine cases Reviewed

    A. Lucas, T. Kawamura, A. Mangeney, K. Onodera, B. Kenda, L. Pan, M. Drilleau, S. Menina, A. Jacob, A. Spiga, M. Knapmeyer, J. Clinton, S. Rodriguez, C. Perrin, P. Lognonné

    Proceedings of Lunar and Planetary Science Conference   XXXXXI ( 1840 )   2020.3

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  • Seismic wave modeling of a Martian dust devil constrained by multi-observation data Reviewed

    K. Onodera, T. Kawamura, A. Lucas, C. Perrin, S. Rodriguez, M. Drilleau, A. Jacob, N. Murdoch, P. Lognonné

    Proceedings of Lunar and Planetary Science Conference   XXXXXI ( 1279 )   2020.3

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  • The international observation of lunar impact flashes and application of the results to future lunar seismic experiments Reviewed

    R. Yamada, T. Kawamura, M. Yanagisawa, S. Abe, T. Fukuhara, K. Onodera, Y. Uchida, S. Kurihara, R. Fuse, F. Yoshida, H. Chi, C. Avdellidou, K. Shirai, Y. Ishihara, S. Tanaka, H. Shiraishi, M. Wieczorek

    Proceedings of Lunar and Planetary Science Conference   XXXXIX ( 1770 )   2019.3

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  • Constraint on impact-seismic efficiency from the Apollo lunar seismic data analysis and numerical simulation Reviewed

    K. Onodera, T. Kawamura, Y. Ishihara, T. Maeda, S. Tanaka

    Proceedings of Lunar and Planetary Science Conference   XXXXX ( 2132 )   2019.3

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  • Measurement of rock size-frequency distribution for understanding the surface environment of APPROACH landing-site candidate Reviewed

    K. Onodera, S. Tanaka, K. Goto, H. Shiraishi, T. Kawamura, R. Yamada, H. Murakami, Y. Ishihara, M. Hayakawa

    New views of the Moon 2 - Asia   2070 ( 6048 )   2018.4

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  • Evaluation of the effect of surface and Moho topographies on lunar seismic wave propagation Reviewed

    K. Onodera, T. Kawamura, Y. Ishihara, T. Maeda, S. Tanaka

    Proceedings of Lunar and Planetary Science Conference   XXXXIX ( 1692 )   2018.3

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Presentations

  • Review of the recent progress in lunar seismology for future lunar explorations Invited

    K. Onodera, S. Tanaka, T. Kawamura, A. Araya, T. Tsuji

    2023 Symposium on Planetary Sciences  2023.2.20 

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    Event date： 2023.2.20 - 2023.2.22

    Presentation type：Oral presentation (invited, special)  

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  • The Latest Views of Lunar and Martian Internal Structures: Implications From the Apollo and InSight Seismic Observations Invited

    Keisuke Onodera, Taichi Kawamura

    JpGU 2025  2025.5.30 

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    Presentation type：Oral presentation (invited, special)  

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  • Recent Progress in Planetary Seismology Invited

    K. Onodera, T. Kawamura

    JpGU 2024  2024.5.28 

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    Presentation type：Oral presentation (invited, special)  

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  • Elastic Property of Ryugu Samples: Preliminary Summary Invited

    K. Onodera, Y. Ino, S. Tanaka, T. Kawamura, R. Kanemaru, T. Ishizaki, R. Fukai, T. Tsuji, T. Nakamura, M. Uesugi, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S. Tachibana, S. Watanabe, Y. Tsuda, Hayabusa2 Initial Sample-Analysis Team

    JpGU 2023  2023.5.24 

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    Language：English   Presentation type：Oral presentation (invited, special)  

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  • 三次元地震波伝搬シミュレーションによる月地殻の散乱特性評価と将来月震探査への提案 Invited

    小野寺圭祐, 川村太一, 田中智, 石原吉明, 前田拓人

    第23回惑星圏研究会  2022.2 

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    Language：English   Presentation type：Oral presentation (invited, special)  

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  • Numerical simulation of lunar seismic wave: Updated scattering structure around Apollo12 landing site from coda fitting approach Invited

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    JpGU 2021  2021.6 

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    Language：English   Presentation type：Oral presentation (invited, special)  

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  • Development Status of Seismometer Package on Dragonfly Rotorcraft Lander

    H. Shiraishi, S. Tanaka, T. Mitani, T. Kawamura, H. Murakami, K. Onodera, R. Yamada, R. Lorenz

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

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  • Investigation on Seismic Exploration of Small Bodies: Implication to the Japanese Next Generation Small Body Sample Return Project

    Gaku Nishiyama, Taichi Kawamura, Keisuke Onodera, Takeshi Tsuji, Satoshi Tanaka, Hiroyuki Kurokawa, Naoya Sakatani, Yuri Shimaki

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

    Presentation type：Oral presentation (general)  

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  • Coherence analysis of Apollo short-period seismometer data for the detection of new moonquakes

    K. Onodera

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

    Presentation type：Oral presentation (general)  

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  • Summary of Elastic Properties of Asteroid Ryugu Samples

    K. Onodera, Y. Ino, S. Tanaka, T. Kawamura, R. Kanemaru, T. Ishizaki, R. Fukai, T. Tsuji, T. Nakamura, M. Uesugi, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S. Tachibana, S. Watanabe, Y. Tsuda

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

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  • Machine learning-based classification of the Martian dust devils observed by InSight: Implication for better estimation of the Martian subsurface structure

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

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  • Japanese Activities to Establish a Seismic Observation Network on the Moon

    S. Tanaka, A. Araya, T. Tsuji, K. Onodera, T. Kawamura

    Asia Oceania Geosciences Society 

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    Event date： 2023.7.30 - 2023.8.4

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  • Comparing Earth, Mars, Venus and Titan in terms of seismic solid/atmosphere coupling and subsurface/atmosphere elastic compliance

    P. Lognonné, Z. Xu, E. Astafyeva, M. Fromen, R. Garcia, T. Kawamura, A. Komjathy, S. Krishnamoorthy, R. Lorenz, D. Mimouun, N. Murdoch, K. Onodera, M. Panning, L. Rolland, I. van Zels

    IGUU 2023 

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    Event date： 2023.7.11 - 2023.7.20

    Presentation type：Oral presentation (general)  

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  • Earth – Moon – Mars lithospheric attenuation properties comparison

    S. Menina, L. Margerin, T. Kawamura, G. Heller, M. Drilleau, Z. Xu, M. Calve, R.F. Garcia, B. Knapmeyer-Endrun, S. Carrasco, K. Onodera, P. Lognonné, A. Sto, W.B. Banerd

    IGUU 2023 

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    Event date： 2023.7.11 - 2023.7.20

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  • Stratification of heterogeneity in the lithosphere of Mars from envelope modeling of very high-frequency seismic events

    S. Menina, L. Margerin, T. Kawamura, G. Heller, M. Drilleau, Z. Xu, M. Calve, R.F. Garcia, B. Knapmeyer-Endrun, S. Carrasco, K. Onodera, P. Lognonné, A. Sto, W.B. Banerd

    IGUU 2023 

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    Event date： 2023.7.11 - 2023.7.20

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  • Three Key Sciences on the Moon

    Tomokatsu Morota, Yuichiro Cho, Hiroshi Nagaoka, Yusuke Nakauchi, Haruhisa Tabata, Mari Aida, Kasumi Yogata, Takahide Mizuno, Seiji Sugita, Toru Yamada, Satoru Iguchi, Toshikazu Onishi, Fuminori Tsuchiya, Daisuke Yamauchi, Naoki Isobe, Takahiro Iwata, Yutaro Sekimoto, Yasuyuki Miyazaki, Akito Araya, Takeshi Tsuji, Keisuke Onodera, Taichi Kawamura, Satoshi Tanaka, Tetsuo Yoshimitsu, Osamu Mori, Takanao Saiki

    The Japan Society for Aeronautical and Space Sciences 

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    Event date： 2023.4.13 - 2023.4.14

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  • 月面多点月震計ネットワークによる探査

    K. Onodera, S. Tanaka, T. Kawamura, A. Araya, T. Tsuji

    重力天体着陸シンポジウム 

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    Event date： 2023.3.1 - 2023.3.2

    Presentation type：Oral presentation (general)  

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  • Scenario and feasibility studies for first-class sciences on the moon

    O. Mori, T. Saiki, T. Yoshimitsu, T. Yamada, S. Iguchi, Y. Sekimoto, Y. Miyazaki, T. Morota, Y. Cho, S. Kameda, T. Mizuno, S. Sugita, H. Nagaoka, Y. Nakauchi, S. Tanaka, A. Araya, T. Tsuji, T. Kawamura, K. Onodera, M. Koga, H. Meguro, K. Tanabe, K. Kariya

    Space Science Symposium 

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    Event date： 2023.1.5 - 2023.1.6

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  • Development of Seismic Observation System for Lunar Exploration

    S. Tanaka, T. Kawamura, A. Araya, T. Tsuji, K. Onodera

    Space Science Symposium 

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    Event date： 2023.1.5 - 2023.1.6

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  • Expected scientific contribution of a short-period seismometer installed on NASA's Titan exploration mission Dragonfly

    K. Onodera, T. Kawamura, S. Tanaka, H. Shiraishi, T. Mitani, H. Murakami, S. Kamata, J. Kimura, Y. Sekine, T. Tsuji, K. Nishida, R. Lorenz

    Space Science Symposium 

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    Event date： 2023.1.5 - 2023.1.6

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  • Development status of a cryogenic Titan seismometer for the Dragonfly relocatable lander

    S. Tanaka, H. Shiraishi, T. Mitani, T. Kawamura, H. Murakami, K. Onodera, R. Yamada, K. Asari, R. Lorenz

    Space Science Symposium 

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    Event date： 2023.1.5 - 2023.1.6

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  • Investigation of the Martian heterogeneous structure through analysis of InSight marsquake data

    K. Onodera, T. Maeda, K. Nishida, T. Kawamura, S. Menina, L. Margerin, P. Lognonné, W. B. Banerdt

    2022.12.19 

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    Event date： 2022.12.19 - 2022.12.20

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  • An attempt to recognize craters with characteristic structures using the Few-shot object detection algorithm

    S. Tanaka, N. Yokoya, M. Ohtake, K. Onodera, H. Demura, E. Morikawa, Y. Imagawa

    2022 ARC-Space Symposium  2022.12.19 

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    Event date： 2022.12.19

    Presentation type：Oral presentation (general)  

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  • Dispersed seismo-acounstic signals following Martian meteorite impacts: Modeling and inversion

    M. Froment, Z. Xu, R. Garcia, M. Drilleau, E. Beucler, K. Onodera, T. Kawamura, C. Larmat, P. Lognonné, W. B. Banerdt

    American Geophysical Union Fall Meeting  2022.12.12 

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    Event date： 2022.12.12 - 2022.12.16

    Presentation type：Oral presentation (general)  

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  • Extreme seismic challenge on the Moon: requirements for targeting the faintest seismic signals from Moon interior and those of gravitational waves

    P. Lognonné, S. Katsanevas, S. Dell’agnello, T. Kawamura, J. Majstorovic, M. Panning, K. Onodera, S. Rosat

    American Geophysical Union Fall Meeting  2022.12.12 

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    Event date： 2022.12.12 - 2022.12.16

    Presentation type：Oral presentation (general)  

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  • Mars events detection with hybrid recurrent scattering neural network using InSight mission data

    G. Sainton, S. Barkaoui, M. Plasman, A. B. Rodriguez, M. V. De Hoop, P. Lognonné, T. Kawamura, K. Onodera, E. Stutzmann, N. Murdoch, A. Spiga, R. Morel, A. Lucas

    American Geophysical Union Fall Meeting  2022.12.12 

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    Event date： 2022.12.12 - 2022.12.16

    Presentation type：Oral presentation (general)  

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  • Introduction of NASA's Titan exploration mission: Dragonfly ~ For the first seismic investigation on an icy moon ~

    K. Onodera, DragMet SEIS Team Japan

    ERI Students' Week Presentation  2022.11.15 

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    Event date： 2022.11.18

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  • How to access Martian seismic and meteorological data obtained by NASA's InSight mission

    K. Onodera

    ERI Students' Week Presentation  2022.11.15 

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    Event date： 2022.11.18

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  • Elastic property of Ryugu samples collected at the second touch-down site

    K. Onodera, Y. Ino, S. Tanaka, T. Kawamura, T. Ishizaki, R. Fukai, R. Kanemaru, T. Iwata, T. Nakamura, HAYABUSA2 initial sample analysis team

    HAYABUSA Symposium 2022  2022.11.14 

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    Event date： 2022.11.14 - 2022.11.16

    Language：English   Presentation type：Poster presentation  

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  • Bayesian inversion of atmospheric and subsurface structure from impact 'chirps'

    M. Froment, Z. Xu, R. Garcia, M. Drilleau, E. Beucler, K. Onodera, T. Kawamura, C. Larmat, P. Lognonné, W. B. Banerdt

    InSight Science Team Meeting 25  2022.11.18 

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    Event date： 2022.11.13 - 2022.11.18

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  • Heterogeneous structure of Mars estimated through coda analysis at long period

    K. Onodera, T. Maeda, K. Nishida, T. Kawamura, S. Menina, L. Margerin, P. Lognonné, W. B. Banerdt

    InSight Science Team Meeting 25  2022.11.17 

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    Event date： 2022.11.13 - 2022.11.18

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  • Subsurface structure from coherency and H/V analyses of InSight event S1222a

    W. Xiao, S. Carrasco, Z. Xu, K. Onodera, B. Knapmeyer-Endrun, T. Kawamura, P. Lognonné, G. Sainton, Y. Wang, W. B. Banerdt

    InSight Science Team Meeting 25  2022.11.16 

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    Event date： 2022.11.13 - 2022.11.18

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  • Systematical catalog of Martian convective vortices observed by InSight

    K. Onodera, K. Nishida, T. Kawamura, N. Murdoch, R. Otsuka, S. Carrasco, G. Sainton, A. Horleston, M. Schimmel, S. Tanaka, T. Mitani, S. Rodriguez, M. Drilleau, C. Perrin, E. Stutzmann, R. Lorenz, P. Lognonné

    InSight Science Team Meeting 25  2022.11.14 

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    Event date： 2022.11.13 - 2022.11.18

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  • Reprocessing Apollo seismic data

    X. Zhang, P. Lognonné, T. Kawamura, H. Samuel, Z. Xu, G. Sainton, M. Froment, K. Onodera

    InSight Science Team Meeting 25  2022.11.14 

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    Event date： 2022.11.13 - 2022.11.18

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  • NASA火星内部構造探査InSightで取得された地震および気象データの利用案内

    K. Onodera, T. Kawamura

    SSJ Fall meeting  2022.10.24 

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    Event date： 2022.10.24 - 2022.10.26

    Language：Japanese   Presentation type：Poster presentation  

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  • Introduction of NASA's Titan exploration mission: Dragonfly – The first seismic investigation on an icy moon –

    Keisuke Onodera, Hiroaki Shiraishi, Satoshi Tanaka, Taichi Kawamura, Takefumi Mitani, Hideki Murakami, Ryuhei Yamada, Syunichi Kamata, Jun Kimura, Hiroyuki Kurokawa, Kiwamu Nishida, Yasuhito Sekine, Takeshi Tsuji, Ralph Lorenz

    SSJ Fall meeting  2022.10.24 

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    Event date： 2022.10.24 - 2022.10.26

    Presentation type：Oral presentation (general)  

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  • Seismological and meteorological description of Martian convective vortices observed by InSight

    Keisuke Onodera, Taichi Kawamura, Kiwamu Nishida, Naomi Murdoch, Ryoji Otsuka, Satoshi Tanaka, Clément Perrin, Grégory Sainton, Sebastian Carrasco, Mélanie Drilleau, Ralph Lorenz, Takefumi Mitani, Sébastien Rodriguez, Martin Schimmel, Eleonore Stutzmann, Philippe Lognonné

    JPSC Fall meeting  2022.9.20 

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    Event date： 2022.9.20 - 2022.9.22

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  • 月の地震波散乱環境の定量評価と比較惑星学への貢献

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    JSPC Fall meeting  2022.9.20 

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    Event date： 2022.9.20 - 2022.9.22

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  • Development of an Ultra-Compact Active Seismic System for Subsurface Exploration in future lunar missions Invited

    Takeshi Tsuji, Tarek Imam, Kazutoshi Sakamoto, Ahmad Bahaa Ahmad, Arata Kioka, Fumitoshi Murakami, Hitoshi Tsukahara, Kimiaki Ochi, Susumu Abe, Satoshi Tanaka, Junichi Haruyama, Keisuke Onodera

    JpGU 2025  2025.5.30 

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  • Numerical experiments of lunar seismic wave propagation: Case study at Szilard crater

    Keisuke Onodera

    JpGU 2025  2025.5.30 

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  • Development status of seismometer for geophysical and meteorological package onboard Dragonfly

    Hiroaki Shiraishi, Takefumi Mitani, Satoshi Tanaka, Taichi Kawamura, Keisuke Onodera, Ryuhei Yamada, Shunichi Kamata, Jun Kimura, Hiroyuki Kurokawa, Kiwamu Nishida, Yasuhito Sekine, Takeshi Tsuji, Hideki Murakami, Ralph Lorenz

    JpGU2025  2025.5.30 

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  • Development of a laser interferometric broadband seismometer for seismic observation in extreme environments

    A. Araya, K. Onodera, T. Kawamura, T. Tsuji, S. Tanaka

    JpGU 2025  2025.5.30 

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  • Volcanism and tectonism at Elysium Planitia on Mars inferred from the InSight seismic observation

    Keisuke Onodera, Taichi Kawamura

    JpGU 2025  2025.5 

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  • Japanese Lunar Seismic Network: Advancing Seismic Exploration of the Moon's Interior .

    T. Kawamura, S. Tanaka, A. Araya, T. Tsuji, K. Onodera

    Lunar Surface Science Workshop  2025.4.9 

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  • Lunar Seismic Scattering Caused by Topographic Features and Megaregolith: Case Study at Szilard Crater

    K. Onodera

    Lunar Planetary Science Conference  2025.3.11 

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  • Developing a Short-Period Seismometer for Dragonfly: The Instrumental Noise Assessment of Engineering Model

    K. Onodera, H. Shiraishi, S. Tanaka, T. Kawamura, T. Mitani, H. Murakami, R. Yamada, M. Panning, K. Sotzen, R. Lorenz

    Lunar Planetary Science Conference 56th  2025.3.11 

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  • タイタン着陸ミッションDragonflyで期待されるサイエンスと地震計パッ ケージ開発状況

    田中智, 白石浩章, 三谷烈史, 川村太一, 山田竜平, 村上英記, 鎌田俊一, 木村淳, 黒川宏之, 西田究, 関根康人, 辻健, 小野寺圭祐, Ralph Lorenz

    Symposium on Planetary Sciences  2025.3.5 

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  • 月震計ネットワークによる月内部構造探査

    K. Onodera, S. Tanaka, T. Kawamura, A. Araya, T. Tsuji

    Symposium on Planetary Sciences  2025.3.3 

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  • Science from the lunar interior

    Keisuke Onodera

    第9回 重力天体（月火星）着陸探査シンポジウム  2025.1.9 

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  • Cm-sized Particles of Active Asteroid investigated from Lunar Impact Flashes Invited

    S. Abe, M. Yanagisawa, K. Onodera

    Space Sciences and Technology Conference  2024.11.5 

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  • Current status of development of a seismic observation system to enable exploration of the lunar interior structure

    Satoshi Tanaka, Taichi Kawamura, Akito Araya, Takeshi Tsuji, Keisuke Onodera

    Space Sciences and Technology Conference  2024.11.5 

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  • Autonomous Seismic Exploration System for Subsurface Investigation Using a Single Ultra-Compact Seismic Source and Seismometer

    Takeshi Tsuji, Imam Tarek, Arata Kioka, Kazutoshi Sakamoto, Keisuke Onodera, Fumitoshi Murakami, Hitoshi Tsukahara, Kimiaki Ochi, Naoshi Aoki, Susumu Abe, Satoshi Tanaka, Junichi Haruyama

    Space Sciences and Technology Conference  2024.11.5 

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  • Toward Seismic Exploration on Titan in NASA’s Dragonfly mission ~Thermal cycling experiments and instrumental & environmental noises~

    K. Onodera, H. Shiraishi, S. Tanaka, T. Kawamura, T. Mitani, H. Murakami, R. Yamada, K. Nishida, S. Kamata, J. Kimura, H. Kurokawa, Y. Sekine, T. Tsuji, M. Panning, R. Lorenz

    SSJ Fall Meeting  2024.10.21 

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  • Low-dispersion spectra of lunar impact flashes

    M. Yanagisawa, S. Abe, K. Onodera

    JSPC Fall meeting  2024.9.24 

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  • 日本における月震観測ネットワーク構築にむけた 開発状況

    S. Tanaka, T. Kawamura, A. Araya, T. Tsuji, K. Onodera

    JSPC Fall meeting  2024.9.24 

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  • New views of lunar seismicity brought by analysis of Apollo short-period seismic data

    K. Onodera

    JSPC Fall meeting  2024.9.24 

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  • Science team activity report for Dragonfly’s seismic observation on Titan (2023 – 2024)

    K. Onodera, T. Kawamura, H. Shiraishi, S. Tanaka, T. Mitani, H. Murakami, R. Yamada, K. Nishida, L. Delaroque, A. Lucas, S. Rodriguez, S. Kamata, J. Kimura, H. Kurokawa, Y. Sekine, T. Tsuji, M. Panning, R. Lorenz

    JSPC Fall meeting  2024.9.24 

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  • Investigation of Martian Gravity Waves Through InSight Seismic and Meteorological Observations

    K. Onodera, K. Nishida, R. Widmer-Schnidrig, T. Kawamura, J. Hernandez-Bernal, P. Lognonné, G. Sainton, A. Spiga, E. Stutzmann, Z. Xu, A. Horleston, M. Schimmel, N. Murdoch

    Mars Interior and Geophysics After InSight  2024.7.16 

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  • Japanese activities to establish a seismic observation network on the Moon

    T. Kawamura, S. Tanaka, A. Araya, T. Tsuji, K. Onodera

    Asia Oceania Geosciences Society  2024.6.28 

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  • Description of Atmospheric Gravity Waves on Mars Based on InSight Seismic & Meteorological Observations

    K. Onodera, K. Nishida, R. Widmer-Schnidrig, T. Kawamura, A. Spiga, J. Hernandez-Bernal, E. Stutzmann, Z. Xu, A. Horleston, M. Schimmel, N. Murdoch

    Asia Oceania Geosciences Society  2024.6.28 

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  • Investigating subsurface structure at the InSight landing site with multiple datasets

    W. Xiao, T. Kawamura, Z. Xu, S. Carrasco, K. Onodera, G. Sainton, P. Lognonné, Y. Wang, B. Knapmeyer-Endrun, W. B. Banerd

    Asia Oceania Geosciences Society  2024.6.28 

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  • Natural ejection of volatile species from the lunar surface at the polar regions

    M. Ohtake, S. Tanaka, Y. Nakauchi, M. Yamamoto, K. Onodera, H. Nagaoka, R. Nishitani

    Asia Oceania Geosciences Society  2024.6.28 

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  • Seismic observation with DraGMet SEIS

    T. Kawamura, K. Onodera, H. Shiraishi, S. Tanaka, T. Mitani, H. Murakami, R. Lorenz, M. Panning, S. Rodrigues, A. Lucas

    Asia Oceania Geosciences Society  2024.6.28 

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  • Development status of seismometer package for Dragonfly relocatable lander Invited

    H. Shiraishi, T. Mitani, T. Kawamura, K. Onodera, R. Yamada, S. Tanaka, H. Murakami, S. Tanaka, R. Lorenz

    Asia Oceania Geosciences Society  2024.6.23 

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  • Newly Discovered Shallow Moonquakes: Temporal and Spatial Distribution

    K. Onodera

    Asia Oceania Geosciences Society  2024.6.23 

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  • Heterogeneous structure of Martian surface as seen by InSight Invited

    Taichi Kawamura, Keisuke Onodera, Sabrina Menina, Ludovic Margerin, Kiwamu Nishida, Takuto Maeda, Philippe Lognonné

    JpGU2024  2024.5.29 

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  • Implication of Ryugu’s physical property by comparison of thermal diffusivity with carbonaceous chondrites

    T. Ishizaki, K. Onodera, R. Fukai, R. Kanemaru, Y. Yasuda, T. Yada, M. Abe, T. Okada, T. Usui

    JpGU2024  2024.5.28 

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  • Lunar Seismology: From Apollo to FSS and Beyond Invited

    Taichi Kawamura, Philippe Lognonné, Mark Panning, Ceri Nunn, Sharon Kedar, Neil Bowles, Simon Calcu, Melanie Drilleau, Raphael Garcia, Anna Horleston, Ed Miller, David Mimoun, W. Tom Pike, Sebastien de Raucour, Renee Weber, Satoshi Tanaka, Takeshi Tsuji, Akito Araya, Keisuke Onodera

    JpGU2024  2024.5.27 

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  • 次世代小天体サンプルリターンミッション：彗星における地震学

    S. Tanaka, T. Kawamura, T. Tsuji, K. Onodera, G. Nishiyama, N. Sakatani, Y. Shimaki, H. Kurokawa

    JpGU 2024  2024.5.27 

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  • Titan seismology with DraGMet SEIS

    T. Kawamura, H. Shiraishi, S. Tanaka, T. Mitani, K. Onodera, H. Murakami, R. Yamada, S. Kamata, J. Kimura, H. Kurokawa, Y. Sekine, T. Tsuji, K. Nishida, M. Panning, R. Lorenz, S. Rodriguez, A. Lucas

    JpGU 2024  2024.5.26 

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  • Initial description plan of Bennu samples in JAXA curation

    R. Fukai, T. Yada, M. Nishimura, M. Abe, T. Usui, S. Sugita, K. Yumoto, Y. Cho, S. Kameda, T. Ishizaki, K. Hatakeda, K. Yogata, R. Tahara, Y. Enoto, R. Kanemaru, K. Onodera

    JpGU 2024  2024.5.26 

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  • Elastic wave velocities of laboratory analogs of Titan’s organic materials

    E. Hirai, Y. Higo, Y. Sekine, S. Tsutsui, T. Tsuji, K. Onodera, T. Kawamura, Y. Yamamoto, S. Hasegawa, S. Tanaka

    JpGU 2024  2024.5.26 

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  • Investigation of lunar near-surface structure via seismic wave propagation simulation

    K. Onodera

    JpGU 2024  2024.5.26 

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  • Assessment of two-dimensional ground rigidity around the InSight landing site via compliance analysis on convective vortices

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura, K. Nishida

    JpGU 2024  2024.5.26 

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  • Analysis of newly discovered shallow moonquakes: Assessment of lunar seismicity and implications for their source mechanism

    K. Onodera

    JpGU 2024  2024.5.26 

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  • Status update of seismometer package for Dragonfly relocatable lander

    H. Shiraishi, T. Mitani, S. Tanaka, T. Kawamura, K. Onodera, R. Yamada, H. Murakami, S. Kamata, J. Kimura, H. Kurokawa, K. Nishida, Y. Sekine, T. Tsuji, R. Lorenz

    JpGU 2024  2024.5.26 

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  • Assessment of atmospheric-driven ground noises for Dragonfly’s seismic observation on Titan

    K. Onodera, T. Kawamura, K. Nishida, H. Shiraishi, S. Tanaka, T. Mitani, H. Murakami, R. Yamada, S. Kamata, J. Kimura, H. Kurokawa, Y. Sekine, T. Tsuji, M. Panning, R. Lorenz

    Annual Meeting of Seismological Society of America  2024.4.29 

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  • Ground deformation caused by atmospheric gravity waves on Mars: An independent assessment of Martian Crustal Rigidity

    K. Onodera, K. Nishida, R. Widmer-Schnidrig, T. Kawamura, A. Spiga, J. Hernandez-Bernal, E. Stutzmann, Z. Xu, A. Horleston, M. Schimmel, N. Murdoch

    Annual Meeting of Seismological Society of America  2024.4.29 

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  • Evaluation of lunar seismicity parameters based on analysis of newly discovered shallow moonquakes in the Apollo seismic data

    K. Onodera

    Annual Meeting of Seismological Society of America  2024.4.29 

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  • Newly Discovered Shallow Moonquakes: General Characteristics and Source Parameters

    K. Onodera

    European Geosciences Union  2024.4.14 

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  • Multi-scale investigation of the InSight landing site on Mars

    S. Carrasco, B. Knapmeyer-Endrun, L. Margerin, E. Stutzmann, M. Schimmel, K. Onodera, S. Menina, W. Xiao, Z. Xu, C. Schmelzbach, M. Hobiger, P. Lognonné

    European Geosciences Union  2024.4.14 

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  • Seismic observation on Titan with DragMet SEIS

    T. Kawamura, H. Shiraishi, S. Tanaka, T. Mitani, K. Onodera, H. Murakami, R. Lorenz, M. Panning

    Lunar Planetary Science Conference  2024.3.10 

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  • Seismic detection of Atmospheric Gravity Waves on Mars

    K. Onodera, K. Nishida, R. Widmer-Schnidrig, T. Kawamura, A. Spiga, J. Hernandez-Bernal, E. Stutzmann, Z. Xu, A. Horleston, M. Schimmel, N. Murdoch

    Lunar Planetary Science Conference  2024.3.10 

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  • Lunar crust thickness inferred by Apollo seismic data and GRAIL gravity data

    X. Zhang, P. Lognonné, T. Kawamura, H. Samuel, Z. Xu, M. Drilleau, M. A. Wieczorek, K. Onodera

    Lunar Planetary Science Conference  2024.3.10 

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  • Statistical methods to categorise lunar seismic signals

    A. Turner, S. Gulick, D. Trugman, F. Civilini, K. Onodera

    Lunar Planetary Science Conference  2024.3.10 

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  • Lateral variation of ground rigidity around the InSight landing site estimated through compliance analysis for convective vortices

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura, K. Nishida

    Lunar Planetary Science Conference  2024.3.10 

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  • Assessment of lunar seismicity using newly discovered shallow moonquakes

    K. Onodera

    Lunar Planetary Science Conference  2024.3.10 

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  • 火星の地震・内部構造:InSightでわかったことと将来探査 Invited

    Taichi Kawamura, Keisuke Onodera, Philippe Lognonné, InSight Science Team

    Symposium on Planetary Sciences  2024.2.20 

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  • Comparison of Thermal Diffusivity between Ryugu grains and Carbonaceous Chondrites

    T. Ishizaki, R. Fukai, R. Kanemaru, K. Onodera, Y. Yasuda, T. Yada, M. Abe, T. Okada, T. Usui

    HAYABUSA Symposium 2023  2023.11.15 

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  • Seismic exploration on Titan by NASA's Dragonfly mission

    K. Onodera, S. Tanaka, H. Shiraishi, T. Kawamura, T. Mitani, H. Murakami, R. Yamada, S. Kamata, J. Kimura, Y. Sekine, K. Nishida, T. Tsuji, M. Panning, R. Lorenz

    Seismological Society of Japan  2023.10.31 

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  • 超高速衝突閃光による水氷資源探査

    S. Abe, M. Yanagisawa, K. Onodera, S. Hasegawa

    第67回宇宙科学技術連合講演会  2023.10.20 

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  • Near-future lunar and planetary exploration plans and expected results from seismic observations Invited

    S. Tanaka, T. Tsuji, A. Araya, T. Kawamura, K. Onodera

    The Society of Exploration Geophysicists of Japan  2023.10.13 

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  • Evaluation of elastic properties of resin-embedded samples to develop a new analytical method for extraterrestrial materials

    Y. Yasuda, K. Onodera, R. Kanemaru, S. Tanaka, R. Fukai, T. Ishizaki, T. Kawamura, T. Tsuji, T. Iwata

    JPSC Fall meeting  2023.10.11 

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  • Ryugu粒子の宇宙風化作用と地球での変質 ：赤外分光スペクトルへの影響

    R. Kanemaru, R. Fukai, T. Ishizaki, T. Yada, K. Onodera, Y. Yasuda, A. Nakato, M. Abe, T. Okada, T. Usui

    JPSC Fall meeting  2023.10.11 

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  • InSightで観測された旋風の特徴：機械学習に基づく分類とその解釈

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura

    JSPC Fall meeting  2023.10.11 

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  • 土星衛星タイタン着陸探査計画ドラゴンフライに搭載する地震計パッケージの開発状況

    H. Murakami, H. Shiraishi, S. Tanaka, T. Mitani, T. Kawamura, K. Onodera, R. Yamada, S. Kamata, J. Kimura, H. Kurokawa, K. Nishida, Y. Sekine, T. Tsuji, R. Lorenz

    JPSC Fall meeting  2023.10.11 

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  • タイタン表層有機物アナログ物質の弾性波速度 測定方法の検討

    E. Hirai, Y. Sekine, K. Onodera, S. Tanaka, T. Tsuji, Y. Higo, T. Tsutsui, O. Nishizawa

    JPSC Fall meeting  2023.10.11 

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  • Comparison of Thermal Diffusivity between Ryugu Samples and Carbonaceous Chondrites by Using Lock-in Thermography Periodic Heating Method

    T. Ishizaki, R. Fukai, R. Kanemaru, K. Onodera, Y. Yasuda, T. Yada, M. Abe, T. Okada, T. Usui

    JPSC Fall meeting  2023.10.11 

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  • Description of Elastic Properties of Tagish Lake Meteorites and Comparison with Ryugu Samples

    K. Onodera, T. Ishizaki, R. Kanemaru, R. Fukai, S. Tanaka, T. Kawamura, T. Yada, M. Abe, T. Okada, T. Usui

    JPSC Fall meeting  2023.10.11 

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  • Seismic observation on Titan with DraGMet SEIS

    T. Kawamura, S. Tanaka, H. Shiraishi, T. Mitani, H. Murakami, R. Yamada, S. Kamata, J. Kimura, H. Kurokawa, K. Nishida, Y. Sekine, T. Tsuji, K. Onodera, R. Lorenz, M. Panning

    Titan Through Time VI  2023.6.16 

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  • Lunar Impact Flash Observing Mission by 6U Spacecraft EQUULEUS (2): A New Step for the Lunar Seismology Invited

    M. Yanagisawa, S. Abe, R. Fuse, K. Onodera, M. Fujiwara, R. Funase

    JpGU 2023  2023.5.26 

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  • Detection of new moonquakes: Coherence analysis of Apollo short-period seismometer data

    K. Onodera

    JpGU 2023  2023.5.26 

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  • Design and Evaluation of an Optical Interferometric Seismometer for the Construction of a Lunar Seismic Observation Network

    A. Araya, K. Onodera, T. Kawamura, T. Tsuji, S. Tanaka

    JpGU 2023  2023.5.26 

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  • A new method for measuring elastic properties of extraterrestrial materials: Evaluation of elastic wave velocity of irregularly shaped samples

    Yoshinao Yasuda, Yuta Ino, Keisuke Onodera, Rei Kanemaru, Satoshi Tanaka, Ryota Fukai, Takuya Ishizaki, Taichi Kawamura, Takeshi Tsuji, Takahiro Iwata

    JpGU 2023  2023.5.24 

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  • Characterization of the Martian dust devils observed by InSight: Machine learning-based classification

    R. Otsuka, K. Onodera, S. Tanaka, T. Kawamura

    JpGU 2023  2023.5.23 

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  • In-situ investigations of Martian regolith using seismic and acoustic measurements Invited

    N. Murdoch, D. Mimoun, K. Hurs, R. D. Lorenz, A. E. Sco, M. Gillier, A. Spiga, E. Marteau, M. Golombek, R. F. Garcia, C. Perrin, R. Widmer-Schnidrig, S. Rodriguez, N. Compaire, N. H. Warner, K. Onodera, T. Kawamura, P. Delage, D. Banfield, R. Hueso, M. Lemmon, G. Martinez, V. Apestigue, D. Toledo, B. Chide, A. Murice, A. Sanchez-Lavega, A. Vicente-Retortillo, C. E. Newman, S. Maurice, M. dela Torre Juarez, T. Bertrand, S. Navarro, M. Marin, J. Gomez-Elvira, X. Jacob, A. Cadu, A. Sournac, A. Trevi-Ollennu, J. A. Rodriguez, R. C. Wiens, P. Lognonne, W. B. Banerd

    JpGU 2023  2023.5.23 

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  • Newly discovered moonquakes from Apollo lunar seismic data

    K. Onodera, Y. Imagawa, S. Tanaka

    European Geosciences Union  2023.4.25 

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  • Natural water ejection to space identified at the lunar polar region

    M. Ohtake, Y. Nakauchi, S. Tanaka, M. Yamamoto, K. Onodera, H. Nagaoka, R. Nishitani

    Lunar and Planetary Science Conference  2023.3 

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  • Characterization of Martian convective vortices using InSight’s seismic and meteorological data

    K. Onodera, K. Nishida, T. Kawamura, N. Murdoch, R. Otsuka, M. Drilleau, M. Schimmel, S. Carrasco, G. Sainton, A. Horleston, S. Tanaka, T. Mitani, C. Perrin, E. Stutzmann, S. Rodriguez, R. Lorenz, A. Spiga, P. Lognonné, W. B. Banerdt

    Lunar Planetary Science Conference  2023.3 

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  • Seismic Scattering and Attenuation Properties of Mars Estimated Through Coda Analysis of S1222a Marsquake

    K. Onodera, T. Maeda, K. Nishida, T. Kawamura, S. Menina, L. Margerin, P. Lognonné, W. B. Banerdt

    Lunar Planetary Science Conference  2023.3 

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  • Dragonfly DragMetSeisの地震観測が目指すサイエンス

    T. Kawamura, S. Tanaka, H. Shiraishi, T. Mitani, H. Murakami, K. Onodera, S. Kamata, J. Kimura, H. Kurokawa, Y. Sekine, T. Tsuji, K. Nishida

    2023 Symposium on Planetary Sciences  2023.2.20 

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  • Quantitative evaluation of the lunar seismic scattering and comparison between the Earth, Mars, and the Moon

    K. Onodera

    Blue Earth Geophysics Seminar at Earthquake Research Institute  2023.1.11 

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  • メテオロイドの月面衝突閃光現象と月資源探査

    阿部新助, 奥山純吾, 柳澤正久, 小野寺圭祐, 長谷川直

    第66回宇宙科学技術連合講演会  2022.11.1 

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  • 月面での地震観測ネットワーク構築と期待されるサイエンス

    田中智, 川村太一, 新谷昌人, 辻健, 小野寺圭祐

    第66回宇宙科学技術連合講演会  2022.11.1 

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  • 月地震観測のための光干渉式地震計の開発

    A. Araya, K. Onodera, T. Kawamura, T. Tsuji, S. Tanaka

    2022.11.1 

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  • 月面衝突閃光の低分散スペクトルから分かったこと

    JSPC Fall meeting  2022.10.24 

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  • 国際共同ミッションとしての月地震観測ネットワーク機構フィジビリティースタディ

    JPSC Fall meeting  2022.10.24 

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  • 土星衛星タイタン探査計画ドラゴンフライに搭載する地震計パッケージの開発状況

    2022.9.20 

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  • 火星探査機インサイトの地震および気象データからみるダストデビルの特徴

    2022.9.20 

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  • 炭素質コンドライト隕石の弾性波速度の測定とRyuguサンプルとの比較

    2022.9.20 

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  • Data release and the seismicity catalog publication of InSight SEIS

    T. Kawamura, C. Pardo, V. Conejero, T. Gabsi, G. Sainton, J. Clinton, S. Ceylan, A. Horleston, N. Dahmen, C. Duran, D. Kim, S. Stähler, M. Plasman, G. Zenhäusern, C. Charalambous, F. Euchner, K. Onodera, D. Giardini, P. Lognonné, W. T. Pike, M. Panning, S. Smreker, W. B. Barnerdt

    JPSC Fall meeting  2022.9.20 

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  • Evaluation of the spectral absorption intensity of volatile materials observed at the lunar polar regions

    JPSC Fall meeting  2022.9.20 

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  • アポロ短周期地震計データの解析による未検出月震イベントの探索

    Y. Imagawa, K. Onodera, S. Tanaka, T. Kawamura

    JSPC Fall meeting  2022.9.20 

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  • Scattering and attenuation properties of the Martian crust through the S1222a seismic event

    S. Menina, L. Margerin, T. Kawamura, P. Lognonné, Z. Xu, K. Onodera, M. Calvet, R. Garcia

    European Planetary Science Congress  2022.9 

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  • Reprocessing Apollo seismic data

    X. Zhang, P. Lognonné, H. Samuel, T. Kawamura, Z. Xu, G. Sainton, M. Froment, K. Onodera

    European Planetary Science Congress  2022.9 

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  • Mars events detection with hybrid recurrent scattering neural network using NASA/InSight mission data

    G. Sainton, S. Barkaoui, A. Bueno, M. de Hoop, P. Lognonné, M. Plasman, A. Lucas, T. Kawamura, K. Onodera, A. Spiga, N.Murdoch

    European Planetary Science Congress  2022.9 

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  • The Martian subsurface structure at the InSight landing site revealed by marsquakes

    S. Carrasco, B. Knapmeyer-Endrun, L. Margerin, C. Schmelzbach, K. Onodera, L. Pan, P. Lognonné, S. Menina, D. Giardini, E. Stutzmann, J. Clinton, S. Stahler, M. Schimmel, M. Golombek, M. Hobiger, M. Hallo, S. Kedar, W. B. Banerdt

    GeoMinKoln  2022.9 

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  • Subsurface structure at the InSight landing site estimated from compliance analysis of Martian convective vortices

    K. Onodera, T. Kawamura, P. Lognonné, M. Drilleau, N. Murdoch, M. Plasman, C. Perrin, M. Schimmel, E. Stutzmann, Z. Xu, R. F. Garcia, M. Vincent, A. Jacob, A. Lucas, S. Rodriguez, M. Panning, W. B. Banerdt

    JpGU 2022  2022.5 

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  • Titan’s seismology with Dragonfly Geophysical and Meteorological package (“DragMet”) Invited

    H. Shiraishi, S. Tanaka, T. Kawamura, T. Mitani, H. Murakami, R. Yamada, S. Kamata, J. Kimura, H. Kurokawa, K. Nishida, Y. Sekine, T. Tsuji, K. Onodera, R. Lorenz

    JpGU 2022  2022.5 

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  • Quantitative evaluation of seismic scattering of the Moon and implications for future explorations

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    JpGU 2022  2022.5 

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  • Distribution of the volatile spectral signals observed at the lunar polar regions

    M. Ohtake, Y. Nakauchi, S. Tanaka, K. Onodera, H. Nagaoka, R. Nishitani

    JpGU 2022  2022.5 

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  • Physical properties of constituent material of the regolith of Ryugu Invited

    S. Tanaka, H. Nagano, T. Yagi, Y. Ino, T. Tsuji, M. Sato, K. Kurosawa, Y. Nagaashi, D. Nakashima, T. Ishizaki, T. Kawahara, N. Sakatani, R. Endo, Y. Yamashita, T. Nishi, H. Ohta, Y. Suganuma, S. Tachikawa, T. Kawamura, T. Kobayashi, K. Onodera, G. Nishiyama, T. Michikami, K. Hattori, Y. Tanaka, M. Yoshioka, A. Tsuchiyama, Y. Kimura, T. Hatakeyama, S. Sugita, R. Fujita, A. Abdulkareem, T. Nakamura, T. Morota, M. Kikuri, K. Amano, E. Kagawa, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S. Tachibana, S. Watanabe, Y. Tsuda

    JpGU 2022  2022.5 

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  • Development of elastic wave velocity measurement technology for Hayabusa2 return sample

    Y. Ino, S. Tanaka, K. Onodera, T. Kawamura, D. Nakanoshima, T. Iwata, T. Nakamura, T. Morota, M. Kikuri, K. Amano, E. Kagawa, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S. Tachibana, S. Watanabe, Y. Tsuda

    JpGU 2022  2022.5 

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  • Dragonflyが目指す生命探査とDraGMet SEISの地震観測 Invited

    ISAS Astrobiology Exploration Symposium  2022.3 

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  • 月震計ネットワークによる月内部構造の把握

    2022.2 

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  • 三次元地震波伝搬シミュレーションによる月地殻の散乱特性評価

    2021.9 

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  • アポロ月震観測で捉えた衝突月震を生成したクレータ探索

    2021.9 

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  • アポロ短周期地震計データの再解析による未検出月震イベントの探索

    2021.9 

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  • Subsurface structure of Mars estimated from InSight seismic and meteorological data

    K. Onodera, T. Kawamura, P. Lognonné, M. Drilleau, N. Murdoch, M. Plasman, C. Perrin, M. Schimmel, E. Stutzmann, Z. Xu, R. Garcia, M. Vincent, A. Jacob, A. Lucas, S. Rodriguez

    Congrès des doctorant·es déconfiné·es  2021.7.1 

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  • Subsurface structure at the landing site from compliance analysis for large convective vortices observed during one Martian year operation

    K. Onodera

    InSight Science Team Meeting 21st  2021.7 

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  • Light source investigation of the volatile spectral signals observed at the lunar polar regions

    M. Ohtake, Y. Nakauchi, S. Tanaka, K. Onodera, H. Nagaoka

    JpGU 2021  2021.6 

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  • Update subsurface structure around InSight landing site from compliance analysis

    K. Onodera, T. Kawamura, P. Lognonné, N. Murdoch, M. Plasman, M. Drilleau, C. Perrin, M. Vincent, A. Lucas, S. Rodriguez, E. Stuzmann, M. Schimmel, Z. Xu, R. Garcia, A. Jacob

    InSight Science Team Meeting 20th  2021.3 

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  • A new model of seismicity on asteroids implied by the SCI experiment of the HAYABUSA2 mission: Insights from the existence of boulders perched on other boulders

    G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, H. Yano, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima

    Lunar Planetary Science Conference  2021.3 

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  • Seismological description of Martian convective vortices from InSight’s data analysis and numerical simulation

    K. Onodera, T. Kawamura, P. Lognonné, N. Murdoch, M. Plasman, M. Drilleau, C. Perrin, M. Vincent, A. Lucas, S. Rodriguez, E. Stuzmann, M. Schimmel, Z. Xu, R. Garcia, A. Jacob

    InSight Atmoshpere Working Group Meeting  2021.2 

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  • Numerical modelling of the artificial impacts on the Moon

    A. Rajšić, K. Milijkovic, N. Wojcicka, K. Onodera, G. S. CollinsT. Kawamura, P. Lognonné, M. A. Wieczorek, I. J. Daubar

    European Planetary Science Congress  2021 

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  • Ground deformations due to atmospheric forcing at InSight landing site: effect of lateral variation of sub-surface properties and response to various atmospheric waves

    R. F. Garcia, L. Martire, A. Spiga, N. Murdoch, P. H. Lognonné, D. J. Banfield, K. J. Hurst, S. Kedar, K. Onodera, C. Perrin, T. Kawamura, A. Scott, C. Charalambous, W. T. Pike, R. Widmer-Schnidrig, N. Compaire, M. Drilleau, B. Pinot, W. B. Banerdt

    AGU Fall Meeting  2020.12 

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  • Simulation of seismic wave propagation on Ryugu induced by the SCI impact experiment of the Hayabusa2 mission: Limited seismic shaking due to low yield strength of the surface regolith

    G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, H. Yano, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima

    AGU Fall Meeting  2020.12 

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  • S-coda wave analysis of InSight seismic data to determine the scattering and intrinsic attenuation in the crust of Mars

    F. G. Karakostas, N. C. Schmerr, R. Maguire, D. Kim, Q. Huang, T. Kawamura, K. Onodera, P. Lognonné, D. Giardini, W. B. Banerdt

    AGU Fall Meeting  2020.12 

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  • 機械学習を用いた新たに形成されたクレーターの検出

    森川恵海, 小野寺圭祐, 田中智

    日本惑星科学会秋学会  2020.11 

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  • 「かぐや」スペクトラルプロファイラデータによる月極域の水氷探索

    2020.11 

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  • Seismological description of Martian convective vortices from InSight’s data analysis and numerical simulation

    K. Onodera, T. Kawamura, P. Lognonné, A. Lucas, C. Perrin, M. Plasman, S. Rodriguez, M. Vincent, M. Drilleau, A. Jacob, N. Murdoch

    InSight French Team Meeting 3rd  2020.10 

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  • Scattering properties near Apollo 12 landing site inferred from numerical simulation of seismic wave propagation

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda

    JpGU-AGU Joint Meeting 2020  2020.7 

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  • Seismic wave propagation on asteroid Ryugu induced by the impact experiment of the Hayabusa2 mission

    G. Nishiyama, T. Kawamura, N. Namiki, B. Fernando, K. Leng, K. Onodera, S. Sugita, T. Saiki, H. Imamura, Y. Takagi, H. Yano, M. Hayakawa, C. Okamoto, H. Sawada, Y. Tsuda, K. Ogawa, S. Nakazawa, Y. Iijima

    JpGU-AGU Joint Meeting 2020  2020.7 

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  • Development of a detection system for new craters using feature-based image registration

    E. Morikawa, K. Onodera, K. Shirai, M. Yamamoto, S. Tanaka

    JpGU-AGU Joint Meeting 2020  2020.7 

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  • 3-D seismic wave propagation simulation of DuDe#0202: Implication for seismic excitation of dust devil vortices

    K. Onodera, T. Kawamura, A. Lucas, C. Perrin, M. Drilleau, A. Jacob, S. Rodriguez, N. Murdoch, P. Lognonné

    InSight Science Team Meeting 17th  2020.2 

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  • 月面衝突閃光の発光メカニズム

    2019.11 

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  • 地上観測・室内実験・6U超小型探査機を用いた月面衝突閃光の総合理解

    阿部新助, 布施凌太, 柳澤正久, 小野寺圭祐, 山田竜平, 福原哲哉, 長谷川直, 矢野創, 船瀬龍

    日本惑星科学会秋学会  2019.10 

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  • かぐや搭載スペクトルプロファイラ(SP)データから発見された水氷吸収プロファイルの解析

    2019.10 

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  • Attenuation and diffusion characteristics of Mars as seen by InSight so far

    T. Kawamura, P. Lognonné, L. Margerin, M. Drilleau, S. Menina, K. Onodera

    InSight Science Team Meeting 16th  2019.10 

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  • 3-D seismic wave simulation including topography and scattering media

    K. Onodera, T. Kawamura, A. Lucas, M. Drilleau, C. Perrin, A. Jacob, S. Rodriquez, P. Lognonné

    InSight Science Team Meeting 16th  2019.10 

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  • 2018年ふたご座流星群に伴う月面衝突閃光の低分散スペクトルII

    柳澤正久, 内田有紀, 栗原誠弥, 阿部新助, 布施凌太, 小野寺圭祐, 山田竜平

    日本惑星科学会秋学会  2019.10 

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  • 月極域で検出された揮発性成分の起源推定

    2019.9 

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  • Lunar impact flash observation of Geminids and application to lunar impact monitoring from deep space

    S. Abe, R. Fuse, M. Yanagisawa, T. Fukuhara, R. Yamada, K. Onodera, S. Tanaka, H. Yano, R. Funase

    Meteoroids 2019  2019.6 

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  • Low-dispersion spectra of lunar impact flashes in 2018 Geminids

    M. Yanagisawa, Y. Uchida, S. Kurihara, S. Abe, R. Fuse, K. Onodera, R. Yamada

    Meteoroids 2019  2019.6 

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  • Investigation of scattering effects from surface and Moho topographies on the Moon and Mars using a numerical simulation of seismic waves

    K. Onodera, T. Kawamura

    InSight Science Team Meeting 15th  2019.6 

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  • Low-dispersion spectra of lunar impact flashes in 2018 Geminids

    M. Yanagisawa, Y. Uchida, S. Kurihara, S. Abe, R. Fuse, K. Onodera, R. Yamada

    JpGU 2019  2019.5 

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  • Observing simulations of impact-induced moonquakes combined with the lunar impact flash observation data for future lunar seismic explorations

    K. Onodera, T. Kawamura, S. Tanaka, Y. Ishihara, T. Maeda, M. Yanagisawa, Y. Uchida, S. Abe, R. Yamada, T. Okamoto

    JpGU 2019  2019.5 

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  • Analysis of the high latitude region of the Moon with spectral profiler: possible presence of water ice

    H. Kyoda, S. Tanaka, M. Ohtake, H. Nagaoka, Y. Nakauchi, K. Onodera

    JpGU 2019  2019.5 

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  • Constraint on impact-seismic efficiency from the Apollo lunar seismic data analysis and numerical simulation

    K. Onodera, T. Kawamura, Y. Ishihara, T. Maeda, S. Tanaka

    Lunar and Planetary Science Conference  2019.3 

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  • The international observation of lunar impact flashes and application of the results to future seismic experiments

    R. Yamada, T. Kawamura, M. Yanagisawa, S. Abe, T. Fukuhara, K. Onodera, Y. Uchida, S. Kurihara, R. Fuse, F. Yoshida, H. Chi, C. Avdellidou, K. Shirai, Y. Ishihara, S. Tanaka, H. Shiraishi, M. Wieczorek

    Lunar and Planetary Science Conference  2019.3 

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  • アポロ月震データと地震波伝搬シミュレーションを用いたインパクトから月震へのエネルギー変換効率の推定

    2019.2 

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  • 月ペネトレータ探査APPROACHミッション：公募型小型ミッションの選定結果と今後の方針について

    2018.10 

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  • 月面衝突閃光の低分散スペクトルII

    2018.10 

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  • 月面衝突閃光の低分散スペクトルI

    2018.10 

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  • Scattering effects of lunar surface and Moho topographies on the propagation of deep moonquakes

    K. Onodera, T. Kawamura, Y. Ishihara, T. Maeda, S. Tanaka

    JpGU 2018  2018.5 

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  • Characterization of lunar surface environment at APPROACH landing-site candidate

    K. Onodera, S. Tanaka, K. Goto, H. Shiraishi, T. Kawamura, R. Yamada, H. Murakami, Y. Ishihara, M. Hayakawa

    JpGU 2018  2018.5 

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    Presentation type：Poster presentation  

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  • The concept and science objectives of lunar penetrator mission APPROACH

    S. Tanaka, K. Goto, H. Shiraishi, T. Kawamura, R. Yamada, H. Murakami, Y. Ishihara, M. Hayakawa, K. Onodera, K. Shirai

    JpGU 2018  2018.5 

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    Presentation type：Oral presentation (general)  

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  • Lunar impact flash observations among two nations and application of the results to future lunar seismic experiments

    R. Yamada, M. Yanagisawa, S. Abe, T. Fukuhara, T. Kawamura, K. Onodera, R. Fuse, K. Shirai, S. Tanaka, Y. Ishihara, M. Wieczorek

    JpGU 2018  2018.5 

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    Presentation type：Oral presentation (general)  

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  • Measurement of rock size-frequency distribution for understanding the surface environment of APPROACH landing-site candidate

    K. Onodera, S. Tanaka, K. Goto, H. Shiraishi, T. Kawamura, R. Yamada, H. Murakami, Y. Ishihara, M. Hayakawa

    New Views of the Moon 2 Asia  2018.4 

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    Language：English   Presentation type：Oral presentation (general)  

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  • Inner structure of the Moon: Shallow structure inferred from seismic observation Invited

    T. Kawamura, K. Onodera, Y. Ishihara, K. Ogawa, T. Tsuji, T. Kobayashi, A. Araya, Y. Nagata, S. Tanaka

    2018.3 

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    Presentation type：Oral presentation (invited, special)  

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  • Updated travel time analysis of Apollo artificial impacts’ seismic data with the precise source locations identified by LRO

    K. Onodera, S. Tanaka, T. Kawamura, Y. Ishihara

    IAG-IASPEI Joint Meeting  2017.8 

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    Language：English   Presentation type：Oral presentation (general)  

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  • Estimation of lunar crustal structure by analyzing Apollo seismic data combined with LRO & SELENE (Kaguya) products

    2017.8 

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  • 月の地形が月震波の伝搬に及ぼす影響の評価

    JpGU 2017  2017.5 

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  • LROの成果を加えたアポロ人工インパクトの月震データの再解析による月地殻厚さの再決定

    JpGU-AGU Joint Meeting  2017.5 

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  • Evaluation of the effect of surface and Moho topographies on lunar seismic wave propagation

    K. Onodera, T. Kawamura, Y. Ishihara, T. Maeda, S. Tanaka

    Lunar and Planetary Science Conference  2017.3 

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Awards

  • ERI director's award

    2022.11   Earthquake Research Institute / The University of Tokyo   Pursuing Inclusion of Diversity in Earthquake Research Institute by forming an international community

    R. Nishiyama, H. Kim, F. Tapia, K. Onodera, D. Muramatsu, L. Olah, C. Sanchez, A. SAEZ

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  • Outstanding Student Presentation Award 2019

    2019   Observing simulations of impact-induced moonquakes combined with the lunar impact flash observation data for future lunar seismic explorations

    Keisuke Onodera

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Research Projects

  • Re-evaluation of the lunar seismicity

    Grant number：23K13157  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research (KAKENHI)  Research for young researcher

    Keisuke Onodera

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    Authorship：Principal investigator 

    Grant amount：\4420000 （ Direct expense: \3400000 、 Indirect expense：\1020000 ）

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  • Studies on seismic wave propagation through heterogeneous environment of the Moon and Mars

    Grant number：1-23003  2023.04 - 2024.03

    Japan Agency for Marine-Earth Science and Technology  FY2023 Research Project for Earth Simulator 

    Keisuke Onodera

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    Authorship：Principal investigator 

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  • New insight into atmospheric seismology through the comparison of pressure and seismic data between the Earth and Mars

    Grant number：22KJ0745  2023.03 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for JSPS Fellows

    Keisuke Onodera

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    Authorship：Principal investigator 

    Grant amount：\4420000 （ Direct expense: \3400000 、 Indirect expense：\1020000 ）

    本研究では局所的な気圧変動に伴い励起される地震(大気励起地震)をテーマとして扱う。研究の主目的は(1)大気励起地震の現象自体への理解を深めることと(2)異なる大気条件下(地球と火星)での特徴の違いを明らかにすることである。初年度である今年度は火星で観測された局所低気圧由来の地震データの特徴を記載したカタログ作成を最優先事項として取り組んだ。
    第一段階として、NASAのインサイトミッションにおける大気観測チームにより提供されているイベントリストを参照し、該当する時期の地震及び気象(気圧、風速、気温など)のデータをすべて収集した。その後、全データに対して前処理(機器特性の補正やノイズ低減処理等)を行なった。第二段階として、各イベントの地震・気象の時系列データやそれぞれの周波数特性などが一目で確認できるようなQuick look図を作成し、火星で観測され たイベントを概観した。第三段階として、気象要素(平均風速・平均風向・平均気温など)の定量化や地震と気圧データの相互相関係数や遅延時間を評価した。これらのパラメータは、移動性局所低気圧の構造や地下の弾性的な特性を強く反映していると考えられているが、過去の研究では定量的かつ統計的な解析がなされていなかったため、本研究では今後の当該分野の発展に本質的な貢献を果たす結果を得たと考える。
    成果は複数の国内外学会で発表した。また、学術論文の準備を鋭意進めており、次年度の初めに国際誌に投稿する予定となっている。

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  • 超小型震源装置１台と地震計１台で地下探査を可能とする自律型地震探査装置の開発

    Grant number：02  2023.04 - 2025.03

    Japan Aerospace Exploration Agency, Space Exploration Innovation Hub Center  アイデア型 広域未踏峰探査技術

    辻健, 小野寺圭祐, Tarek Samir Imam, 阿部進, 村上文俊, 塚原均, 青木直史, 越智公昭, 田中智

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  • 大規模地震動シミュレーションを活用した地震発生帯の構造解明と強震即時予測

    Grant number：2023-S-A101  2023.04 - 2024.03

    Earthquake Research Institute, The University of Tokyo  大型計算機共同利用公募研究 

    江本賢太郎, 古村孝志, 加藤愛太郎, 綿田辰吾, 行竹洋平, 小野寺圭祐, 山谷里奈, 馬場慧, 前田拓人, 髙野 智也, 中原恒, 吉本和生, 吉光 奈奈

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  • Characteristic crater detection using FSOD algorithm 〜Finding the craters which caused seismic events observed by Apollo mission〜

    2021.04 - 2022.03

    University of Aizu, Aizu Research Center for Space Informatics (ARC-Space)  会津大学宇宙情報科学研究 センター共同研究  萌芽的研究

    S. Tanaka, N. Yokoya, M. Ohtake, K. Onodera, H. Demura

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Social Activities

  • ELSI Annual Public Lecture

    Role(s)：Lecturer

    ELSI, Tokyo Tech.  https://www.elsi.jp/en/news_events/news/2024/public_lecture_fy2024_movie/  2024.11.28

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  • 研究者の卵が語る月のお話 ~月のきほんから将来ミッションまで~

    Role(s)：Lecturer,　Planner

    平塚市博物館  2019.1

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    Type：Lecture

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  • 君が作る宇宙ミッション（きみっしょん）スタッフ

    Role(s)：Planner

    JAXA教育センター  2017.4 - 2022.3

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Media Coverage

  • Thousands of Moonquakes Rocked the Apollo Landing Sites in Less Than a Decade Internet

    Smithsonian Magazine  https://www.smithsonianmag.com/science-nature/thousands-of-moonquakes-some-of-them-threatening-discovered-in-old-apollo-era-data-180984822/  2024.8

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  • Miles de terremotos lunares sacudieron los sitios de aterrizaje del Apolo en menos de una década Internet

    Espanol News  https://espanol.news/miles-de-terremotos-lunares-sacudieron-los-sitios-de-aterrizaje-del-apolo-en-menos-de-una-decada/#google_vignette  2024.8

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  • New Moonquakes from Old Data Internet

    AGU  Eos  https://eos.org/editor-highlights/new-moonquakes-from-old-data  2024.8

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    Author：Other 

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  • Moonquakes are much more common than thought, Apollo data suggest Internet

    Science News  https://www.sciencenews.org/article/moonquakes-common-apollo-data-suggest  2024.7.26

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    Author：Other 

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  • New moonquakes found in Apollo-era data Internet

    AGU  This week from AGU  https://news.agu.org/7-10-24-new-moonquakes-found-in-apollo-era-data/  2024.7.10

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    Author：Other 

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  • News views of lunar seismicity brought by analysis of Apollo short-period seismic data Internet

    ERI, UTokyo  The latest research  https://www.eri.u-tokyo.ac.jp/research/21781/  2024.7

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  • Number of known moonquakes tripled with discovery in Apollo archive Internet

    Science  https://www.science.org/content/article/number-known-moonquakes-tripled-discovery-apollo-archive  2024.3

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  • 土星の衛星タイタンで地震観測 地下の構造など特定する手掛かりに Newspaper, magazine

    大分合同新聞  なるほどサイエンス  2022.12.19

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    Author：Other 

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  • 土星の衛星で地震観測 Newspaper, magazine

    高知新聞  サイエンス (科学が分かった)  2022.12.11

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  • 地球以外での地震 土星の衛星で観測へ Newspaper, magazine

    北日本新聞  科学が分かった！  2022.12

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  • 地球以外の地震 土星の衛星で観測計画 Newspaper, magazine

    愛媛新聞  Science Q&A (科学が分かった）  2022.12

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  • Overlooked Apollo data from the 1970s reveals huge record of 'hidden' moonquakes Internet

    Space.com  https://www.space.com/apollo-data-reveals-hidden-moonquakes 

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    Author：Other 

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Academic Activities

  • Chair person [PPS09 Lunar Science and Exploration]

    Role(s)：Panel moderator, session chair, etc.

    JpGU2024  2024.5.27

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    Type：Academic society, research group, etc. 

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  • Chair person [PPS06 Lunar Science and Exploration]

    Role(s)：Panel moderator, session chair, etc.

    JpGU2023  2023.5.26

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  • Chair person【S19 General seismology and others】

    Role(s)：Panel moderator, session chair, etc.

    SSJ Fall meeting  2022.10.24

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  • Japan Geoscience Union [Lunar science and exploration session] : Session Convener

    Role(s)：Panel moderator, session chair, etc.

    JpGU  2022.5

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  • Japan Geoscience Union [Lunar science and exploration session] : Chairman

    Role(s)：Panel moderator, session chair, etc.

    2022.5

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  • Chair person [Moon session]

    Role(s)：Panel moderator, session chair, etc.

    JPSC Fall Meeting  2024.9.24

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  • Chair person [Moon session]

    Role(s)：Panel moderator, session chair, etc.

    ISAS Planetary Exploration Workshop  2024.9.2

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  • Reviewer: Exploration Science Standard Call 2024

    Role(s)：Peer review

    UK Space Agency  2024.7

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    Type：Peer review 

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  • Reviewer: Progress in Earth and Planetary Science

    Role(s)：Peer review

    Progress in Earth and Planetary Science  2023.12

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    Type：Peer review 

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  • Reviewer: Mars Exploration Science Standard Call AO 2023

    Role(s)：Peer review

    UK Space Agency  2023.8

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    Type：Peer review 

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  • Reviewer: Journal of Geophysical Research: Planets

    Role(s)：Peer review

    2022.10

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    Type：Peer review 

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  • Reviewer: Journal of Geophysical Research: Planets

    Role(s)：Peer review

    2022.6

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    Type：Peer review 

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  • Reviewer: Progress in Earth and Planetary Science

    Role(s)：Peer review

    2022.2

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    Type：Peer review 

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  • Reviewer: Progress in Earth and Planetary Science

    Role(s)：Peer review

    2022.1

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    Type：Peer review 

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