Faculty Profiles - Kanna Naoya

写真a

Kanna Naoya

Organization

Faculty of Environmental, Life, Natural Science and Technology Associate Professor

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Research Interests

パタゴニア
Greenland
Marine Chemistry
Sea of Okhotsk
北極海
南極海
微量金属

Education

Hokkaido University 大学院環境科学院博士課程

2012.4 - 2015.9

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Hokkaido University 大学院環境科学院修士課程

2010.4 - 2012.3

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University of the Ryukyus 理学部海洋自然科学科

2005.4 - 2010.3

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Research History

Okayama University Faculty of Environmental, Life, Natural Science and Technology Associate Professor

2026.4

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Shizuoka University

2023.4 - 2026.3

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The University of Tokyo Atmosphere and Ocean Research Institute Assistant Professor

2021.4 - 2026.3

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The University of Tokyo Atmosphere and Ocean Research Institute

2020.4 - 2021.3

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Hokkaido University Arctic Research Center Postdoctoral Fellow

2016.4 - 2020.3

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Hokkaido University Institute of Low Temperature Science Research Assistant

2015.10 - 2016.3

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Professional Memberships

THE OCEANOGRAPHIC SOCIETY OF JAPAN

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日本地球化学会

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日本地球惑星科学連合

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Committee Memberships

Greenland Ice Sheet Ocean Science Network (GRISO) Working Group on Marine Ecosystems

2022.1 - 2024.1

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Papers

Determination of picomolar to sub-nanomolar trace metals in seawater using an alternative chelating resin Reviewed

Naoya Kanna, Hajime Obata, Yoshiko Kondo

Marine Chemistry 276 104642 - 104642 2026.5

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

DOI： 10.1016/j.marchem.2026.104642

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Spatial distributions of iron and manganese in surface waters of the Arctic's Laptev and East Siberian seas Reviewed

Naoya Kanna, Kazutaka Tateyama, Takuji Waseda, Anna Timofeeva, Maria Papadimitraki, Laura Whitmore, Hajime Obata, Daiki Nomura, Hiroshi Ogawa, Youhei Yamashita, Igor Polyakov

Biogeosciences 22 ( 4 ) 1057 - 1076 2025.2

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Authorship：Lead author Publishing type：Research paper (scientific journal) Publisher：Copernicus GmbH

Abstract. The Arctic Laptev and East Siberian seas (LESS) have high biogeochemical activity. Nutrient inputs associated with river runoff and shelf sediment–water exchange processes are vital for supporting primary production in the LESS. Relative to macronutrients, data on dissolved iron (dFe) and manganese (dMn), which are essential micronutrients for primary producers, have historically been sparse for LESS. Some dFe and dMn are reportedly carried in the central Arctic by the Transpolar Drift, a major current that directly transports Eurasian shelf water, river water, and sea ice from the LESS continental margins. However, the supply of dFe and dMn to the surface waters of the LESS and the subsequent biogeochemical processes are not well constrained. In the summer of 2021, we investigated the following questions: what are the sources of dFe and dMn in the surface layer and which factors control their concentrations and distributions on the LESS continental margins? We demonstrated strong regional controls on dFe and dMn distributions based on distinct hydrographic regimes between the eastern side of the LESS (East Siberian Sea and Chukchi Abyssal Plain) and the western side (Makarov and Amundsen basins). Specifically, the East Siberian Sea and Chukchi Abyssal Plain were governed by Pacific-sourced water, and the Makarov and Amundsen basins were influenced by Atlantic-sourced water. Pacific-sourced water contained higher levels of dMn released from continental shelf sediments than Atlantic-sourced water. In contrast, elevated dFe signals were not observed, likely because sedimentary dFe was more rapidly removed from the water column through oxidation or scavenging than dMn was. The impact of river water discharge on the dFe distributions of Pacific- and Atlantic-sourced water was significant. A positive correlation between the fraction of meteoric water (river water and precipitation), dFe, and humic-like colored dissolved organic matter (CDOM) in these waters confirmed that dFe and CDOM are common freshwater sources. Terrigenous organic ligands likely stabilize Fe in the dissolved phase, which is not the case for Mn. Sea ice melting and formation were not significant sources during the observation period. We conclude that the major sources controlling the dFe and dMn distributions on the LESS continental margins are river discharge and shelf sediment input.

DOI： 10.5194/bg-22-1057-2025

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Dynamics of trace metals in the Antarctic ice sheet, glaciers and sea ice Reviewed

Naoya Kanna

地球化学 57 ( 2 ) 127 - 141 2023.3

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Authorship：Lead author Language：Japanese

DOI： 10.14934/chikyukagaku.57.127

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Meltwater Discharge From Marine‐Terminating Glaciers Drives Biogeochemical Conditions in a Greenlandic Fjord Reviewed

Naoya Kanna, Shin Sugiyama, Takuto Ando, Yefan Wang, Yuta Sakuragi, Toya Hazumi, Kohei Matsuno, Atsushi Yamaguchi, Jun Nishioka, Youhei Yamashita

Global Biogeochemical Cycles 36 ( 11 ) 2022.11

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

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Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2022GB007411
Size fractionation and bioavailability of iron released from melting sea ice in a subpolar marginal sea Reviewed

Kanna, N., D. Lannuzel, P. van der Merwe, J. Nishioka

Marine Chemistry 221 2020

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Iron supply by subglacial discharge into a fjord near the front of a marine-terminating glacier in northwestern Greenland Reviewed

Kanna, N, S. Sugiyama, Y. Fukamachi, D. Nomura, J. Nishioka

Global Biogeochemical Cycles 34 2020

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

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Upwelling of macronutrients and dissolved inorganic carbon by a subglacial freshwater driven plume in Bowdoin Fjord, northwestern Greenland Reviewed

Kanna, N, S. Sugiyama, Y. Ohashi, S. Sakakibara, Y. Fukamachi, D. Nomura

Journal of Geophysical Research-Biogeosciences 123 1666 - 1682 2018

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

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Winter iron supply processes fueling spring phytoplankton growth in a sub-polar marginal sea, the Sea of Okhotsk −Importance of sea ice and the East Sakhalin current− Reviewed

Kanna, N, Y. Sibano, T. Toyota, J. Nishioka

Marine Chemistry 206 109 - 120 2018

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

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Bio-availability of iron derived from subarctic first-year sea ice Reviewed

Naoya Kanna, Jun Nishioka

MARINE CHEMISTRY 186 189 - 197 2016.11

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.marchem.2016.09.009

Web of Science

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Iron and macro-nutrient concentrations in sea ice and their impact on the nutritional status of surface waters in the southern Okhotsk Sea Reviewed

Naoya Kanna, Takenobu Toyota, Jun Nishioka

PROGRESS IN OCEANOGRAPHY 126 44 - 57 2014.8

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.pocean.2014.04.012

Web of Science

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Cerium isotopes unveil hydrogenetic Fe-Mn encrustation occurring throughout from the oxygen minimum zone to the deep pacific Reviewed

Wenshuai Li, Ryoichi Nakada, Hajime Obata, Naoya Kanna, Inhee Kim, Teruhiko Kashiwabara, Kotaro Higashi, Naomi Kawamura, Yoshihiro Asahara, Hirofumi Tazoe, Masato Tanaka, Akira Usui, Yoshio Takahashi

Science Advances 12 ( 18 ) 2026.5

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Publishing type：Research paper (scientific journal) Publisher：American Association for the Advancement of Science (AAAS)

The interaction between a large, dissolved Mn reservoir in the oxygen minimum zone (OMZ) and the deeper oxygenated water allows for Mn oxidation and precipitation at their interface. The current paradigm posits that the OMZ acts as a Mn ²⁺ source necessary for hydrogenetic ferromanganese encrustation, while the encrustation itself is not thought to occur within the OMZ, although this remains a subject of ongoing debate. Marine Fe-Mn crusts enrich critical metals including those with high affinity for Mn oxides (e.g., Ce), which provide insights into the fate of Mn. Here, we present the δ ¹⁴² Ce profiles in Fe-Mn crusts and surrounding seawater from the Northwest Pacific, demonstrating continuous growth of crusts from the OMZ to abyssal depths (5000 to 6000 meters). We identify heterogeneous δ ¹⁴² Ce _SW profiles in seawater and crusts across the OMZ in the Northwest Pacific Ocean, which are closely linked with the ocean Mn cycle. We further quantify a close association of Ce with Mn oxides in Fe-Mn crusts and Ce isotope fractionation between crusts and ambient seawater, bridging marine Mn and Ce cycles. These results support a revised model in which Mn oxide precipitation could initiate within the OMZ and persist into the deep ocean.

DOI： 10.1126/sciadv.aee2813

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Deconvolving low-temperature alteration and post-sampling oxidation in submarine pumice from active hydrothermal fields of the middle Okinawa Trough Reviewed

Zijun Song, Shinsuke Yagyu, Naoya Kanna, Takuya Matsuzaki, Masafumi Murayama, Hajime Obata, Toshiro Yamanaka

GEOCHEMICAL JOURNAL (in press) 2026

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Publishing type：Research paper (scientific journal) Publisher：Geochemical Society of Japan

DOI： 10.2343/geochemj.gj26005

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Changes in the coastal environments and their impact on society in the Qaanaaq region, northwestern Greenland Reviewed

Shin Sugiyama, Atsushi Yamaguchi, Tatsuya Watanabe, Yasumasa Tojo, Naotaka Hayashi, Jean-Baptiste Thiebot, Makoto Tomiyasu, Kohei Hasegawa, Yoko Mitani, Mayuko Otsuki, Yuta Sakuragi, Monica Ogawa, Kenzo Tanaka, Kaisei Sakurai, Kohei Matsuno, Naoya Kanna, Evgeny Podolskiy, Ryo Kusaka, Yefan Wang, Takuro Imazu, Kaho Watanabe, Ken Sato, Shinta Ukai, Soratakato Yamada, Ken Kondo, Shintaro Yamasaki, Kazutaka Tateyama, Kazutoshi Sato, Jun Inoue, Taro Mori, Tatsuya Fukazawa, Aqqalu Rosing-Asvid, Kirsty Langley, Andrea M.U. Gierisch, Jenna Sutherland, Toku Oshima

Polar Science 45 101206 - 101206 2025.4

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

DOI： 10.1016/j.polar.2025.101206

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Overview of the SLOPE2024 for sea ice biogeochemistry and physics in Saroma-ko Lagoon, Hokkaido, Japan

Daiki NOMURA, Ryota AKINO, Keiichiro HARA, Naoya KANNA, Kineta KUNIMATSU, Takayuki KURAMOTO, Rie KUROI, Yutaka KUROSAKI, Norio KUROSAWA, Ryosuke MAKABE, Sumito MATOBA, Ryo MATSUDA, Nozomi MORI, Miku NARUSAWA, Yuichi NOSAKA, Masatoshi NUMATA, Hajime OBATA, Fujio OHNISHI, Cody C. OWEN, Nana SAMORI, Masayoshi SANO, Ryota SAITO, Yumi SUNAKAWA, Keigo D. TAKAHASHI, Manami TOZAWA, Hiromichi UENO, Pat WONGPAN, Masaki YOSHIMURA, Liyang ZHAN

Bulletin of Glaciological Research 43 21 - 37 2025

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Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Snow and Ice

DOI： 10.5331/bgr.25r01

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Impacts of glacial discharge on the primary production in a Greenlandic fjord Reviewed

Yasuhiro Hoshiba, Yoshimasa Matsumura, Naoya Kanna, Yoshihiko Ohashi, Shin Sugiyama

Scientific Reports 14 ( 1 ) 2024.7

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

Abstract

Subglacial discharge from marine-terminating glaciers in Greenland injects large volumes of freshwater and suspended sediment into adjacent fjord environments. Although the discharge itself is nutrient poor, the formation of meltwater plumes can enhance marine biological production by stimulating upwelling of nutrient-rich fjord water. Despite the importance of meltwater discharge to marine ecosystems, little is known of the quantitative impact of discharge processes on phytoplankton growth, including the effects of local plumes, fjord-wide stirring and mixing, and suspended sediments on net primary production (NPP). Here, we report simulations of Bowdoin Fjord in northwestern Greenland using coupled non-hydrostatic ocean circulation and lower-trophic level ecosystem models, developed using field data. Our findings demonstrate that subglacial discharge plays a crucial role in NPP by stirring and mixing the entire fjord water system, which has a greater effect on NPP than local plume upwelling. Sensitivity tests suggest a 20% increase in NPP under conditions of enhanced discharge anticipated in the future. However, if glacier discharge and retreat exceed critical levels, NPP is predicted to decline by 88% relative to present values. This pattern reflects the negative impact of increased sediment flux on photosynthesis and weakened fjord stirring and mixing resulting from shallower outlet depths.

DOI： 10.1038/s41598-024-64529-z

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Other Link： https://www.nature.com/articles/s41598-024-64529-z
Dissolved Fe(II) and its oxidation rates in the Kuroshio area, subarctic Pacific, and Bering Sea Reviewed

Hajime Obata, Akira Mase, Naoya Kanna, Shigenobu Takeda, Jun Nishioka, Kenshi Kuma

GEOCHEMICAL JOURNAL 58 ( 2 ) 71 - 79 2024.5

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Publishing type：Research paper (scientific journal) Publisher：Geochemical Society of Japan

DOI： 10.2343/geochemj.gj24006

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A comparison of an operational wave–ice model product and drifting wave buoy observation in the central Arctic Ocean: investigating the effect of sea-ice forcing in thin ice cover Reviewed

Takehiko Nose, Jean Rabault, Takuji Waseda, Tsubasa Kodaira, Yasushi Fujiwara, Tomotaka Katsuno, Naoya Kanna, Kazutaka Tateyama, Joey Voermans, Tatiana Alekseeva

Polar Research 42 2023.8

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Publishing type：Research paper (scientific journal) Publisher：Norwegian Polar Institute

DOI： 10.33265/polar.v42.8874

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Other Link： https://polarresearch.net/index.php/polar/article/view/8874/15873
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland Reviewed

Takahito Horikawa, Daiki Nomura, Naoya Kanna, Yasushi Fukamachi, Shin Sugiyama

Frontiers in Marine Science 9 2022.7

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Publishing type：Research paper (scientific journal) Publisher：Frontiers Media SA

To understand the effects of the glacial meltwater supply on carbonate chemistry and the air–sea CO₂ flux within the fjord, water samples were collected in Bowdoin Fjord in northwestern Greenland for dissolved inorganic carbon (DIC) concentration, total alkalinity (TA), oxygen isotopic ratio (δ¹⁸O), and chlorophyll a concentration analyses in the summers of 2016 and 2017. The partial pressure of CO₂ (pCO₂) in surface water, calculated from DIC and TA, was less than 200 µatm, and was significantly lower than that in the atmosphere (399 ± 3 µatm). Therefore, surface water of the fjord acts as sink for CO₂ in the atmosphere (–4.9 ± 0.7 mmol m^–2 d^–1). To evaluate the effects of freshwater and land-derived substances by glacial meltwater on pCO₂ in the fjord, we calculated the changes of pCO₂ in salinity and carbonate chemistry that would result from the inflow of glacial meltwater into the fjord. The calculated pCO₂ was high near the calving front, where the contribution of glacier meltwater was significant. Examination of the relationship between salinity-normalized DIC and TA, which was considered DIC and TA input from the land, suggested that the land-derived high pCO₂ freshwater affected mainly by the remineralization of the organic matter by bacterial activity was supplied to the Bowdoin Fjord.

DOI： 10.3389/fmars.2022.873860

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Glacial earthquake-generating iceberg calving in a narwhal summering ground: The loudest underwater sound in the Arctic? Reviewed

Evgeny A. Podolskiy, Yoshio Murai, Naoya Kanna, Shin Sugiyama

The Journal of the Acoustical Society of America 151 ( 1 ) 6 - 16 2022.1

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Publishing type：Research paper (scientific journal) Publisher：Acoustical Society of America (ASA)

DOI： 10.1121/10.0009166

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Atmosphere-sea ice-ocean interaction study in Saroma-ko Lagoon, Hokkaido, Japan 2021 Reviewed

Daiki NOMURA, Hiroki IKAWA, Yusuke KAWAGUCHI, Naoya KANNA, Tatsuya KAWAKAMI, Yuichi NOSAKA, Sachi UMEZAWA, Manami TOZAWA, Takahito HORIKAWA, Reishi SAHASHI, Taichi NOSHIRO, Ibuki KABA, Makoto OZAKI, Fumiyoshi KONDO, Keisuke ONO, Itsuka S. YABE, Eun Yae SON, Takahiro TOYODA, Sohiko KAMEYAMA, Changqing WANG, Hajime OBATA, Atsushi OOKI, Hiromichi UENO, Akihide KASAI

Bulletin of Glaciological Research 40 1 - 17 2022

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Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Snow and Ice

DOI： 10.5331/bgr.21r02

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Ocean-bottom and surface seismometers reveal continuous glacial tremor and slip

Evgeny A. Podolskiy, Yoshio Murai, Naoya Kanna, Shin Sugiyama

Nature Communications 12 ( 1 ) 2021.12

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

<title>Abstract</title>Shearing along subduction zones, laboratory experiments on analogue faults, and sliding along glacier beds are all associated with aseismic and co-seismic slip. In this study, an ocean-bottom seismometer is deployed near the terminus of a Greenlandic tidewater glacier, effectively insulating the signal from the extremely noisy surface seismic wavefield. Continuous, tide-modulated tremor related to ice speed is recorded at the bed of the glacier. When noise interference (for example, due to strong winds) is low, the tremor is also confirmed via analysis of seismic waveforms from surface stations. The signal resembles the tectonic tremor commonly observed during slow-earthquake events in subduction zones. We propose that the glacier sliding velocity can be retrieved from the observed seismic noise. Our approach may open new opportunities for monitoring calving-front processes in one of the most difficult-to-access cryospheric environments.

DOI： 10.1038/s41467-021-24142-4

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Other Link： http://www.nature.com/articles/s41467-021-24142-4
Co-seismic eruption and intermittent turbulence of a subglacial discharge plume revealed by continuous subsurface observations in Greenland Reviewed

Evgeny A. Podolskiy, Naoya Kanna, Shin Sugiyama

Communications Earth & Environment 2 ( 1 ) 2021.12

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

<title>Abstract</title>In the Arctic, subglacial discharge plumes have been recently recognised as a key driver of fjord-scale circulation. However, owing to the danger that accompanies prolonged observations at plumes, no time-series data are available. Here, we present results showing the chaotic and irregular dynamics of a plume revealed by continuous subsurface monitoring directly on the calving front of a Greenlandic glacier. We found intense fluctuations in the current and scalars (temperature and salinity), recognised shallow and deep tidal modulation and anomalies due to co-seismic drainage of an ice-dammed lake via the plume, and observed rapid and marked changes in stratification. Our analysis uncovers energy cascade intermittency with coherent structures, corresponding to upwelling pulses of warm water. Prior to our research, in situ evidence of time-variable plume dynamics was absent and limited to snapshots, therefore, our study and approach will enable researchers to transition from an episodic view of a plume to a continuously updated image.

DOI： 10.1038/s43247-021-00132-8

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Other Link： http://www.nature.com/articles/s43247-021-00132-8
Ocean-Bottom Seismology of Glacial Earthquakes: The Concept, Lessons Learned, and Mind the Sediments Reviewed

Evgeny A. Podolskiy, Yoshio Murai, Naoya Kanna, Shin Sugiyama

Seismological Research Letters 2021.5

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Publishing type：Research paper (scientific journal) Publisher：Seismological Society of America (SSA)

<title>Abstract</title>
About 70% of Earth’s surface is covered by ocean, for which seismic observations are challenging. Seafloor seismology overcame this fundamental difficulty and radically transformed the earth sciences, as it expanded the coverage of seismic networks and revealed otherwise inaccessible features. At the same time, there has been a recent increase in the number of studies on cryoseismology. These have yielded multiple discoveries but are limited primarily to land and ice-surface receivers. Near ice calving fronts, such surface stations are noisy, primarily due to crevassing and wind, are hazardous to maintain, and can be lost due to iceberg calving. To circumvent these issues, we have applied ocean-bottom seismology to the calving front of a tidewater glacier in northwest Greenland. We present details of this experiment, and describe the technical challenges, noise analysis, and examples of recorded data. This includes tide-modulated seismicity with thousands of icequakes per day and the first near-source (∼200–640 m) underwater record of a major kilometer-scale calving event in Greenland, which generated a glacial earthquake that was detectable ∼420 km away. We also identified a decrease in bottom-water temperature, presumably due to modified water stratification driven by extreme Greenland glacial melting, at the end of July 2019. Importantly, we identify glacial sediments as the key reason for the anomalously long (∼9.7 hr) delay in the sensor release from the fjord seafloor. Our study demonstrates a methodology to undertake innovative, interdisciplinary, near-source studies on glacier basal sliding, calving, and marine-mammal vocalizations.

DOI： 10.1785/0220200465

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Rapidly changing glaciers, ocean and coastal environments, and their impact on human society in the Qaanaaq region, northwestern Greenland Reviewed

Shin Sugiyama, Naoya Kanna, Daiki Sakakibara, Takuto Ando, Izumi Asaji, Ken Kondo, Yefan Wang, Yoshiki Fujishi, Shungo Fukumoto, Evgeniy Podolskiy, Yasushi Fukamachi, Minori Takahashi, Sumito Matoba, Yoshinori Iizuka, Ralf Greve, Masato Furuya, Kazutaka Tateyama, Tatsuya Watanabe, Shintaro Yamasaki, Atsushi Yamaguchi, Bungo Nishizawa, Kohei Matsuno, Daiki Nomura, Yuta Sakuragi, Yoshimasa Matsumura, Yoshihiko Ohashi, Teruo Aoki, Masashi Niwano, Naotaka Hayashi, Masahiro Minowa, Guillaume Jouvet, Eef van Dongen, Andreas Bauder, Martin Funk, Anders Anker Bjørk, Toku Oshima

Polar Science 27 100632 - 100632 2021.3

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

DOI： 10.1016/j.polar.2020.100632

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Impacts of meltwater discharge from marine–terminating glaciers on the protist community in Inglefield Bredning, northwestern Greenland Reviewed

Matsuno, K, N. Kanna, S. Sugiyama, A. Yamaguchi, E. Yang

Marine Ecology Progress Series 642 55 - 65 2020

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Language：English Publishing type：Research paper (scientific journal)

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山岳湖沼における結氷現象と気候変動との関係 Reviewed

知北和久, 大八木英夫, 牧野昌, 漢那直也, 刀根賢太, 波多俊太郎, 安藤卓人, 白井裕子

陸水物理学会誌 2 1 - 11 2020

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Enhanced Iron flux to Antarctic Sea Ice via Dust Deposition from Ice-free Coastal Areas Reviewed

Duprat, L, N. Kanna, J. Janssens, A. Roukaerts, F. Deman, A. T. Townsend, K. M. Meiners, P. van, der Merwe, D. Lannuzel

Journal of Geophysical Research-Oceans 124 2019

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Language：English Publishing type：Research paper (scientific journal)

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Effects of glacier and sea ice melting on the biogeochemical cycles of the surface water in the Arctic Ocean Reviewed

Daiki Nomura, Naoya Kanna, Atsushi Ooki

Chikyu-Kagaku (Geochemistry) 4 ( 53 ) 149 - 158 2019

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Language：Japanese

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Water mass structure and the effect of subglacial discharge in Bowdoin Fjord, northwestern Greenland Reviewed

Ohashi, Y, S. Aoki, Y. Matsumura, S. Sugiyama, N. Kanna, D. Sakakibara

Ocean Science 16 545 - 564 2019

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Language：English Publishing type：Research paper (scientific journal)

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Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland Reviewed

Nishizawa, B, N. Kanna, Y. Abe, Y. Ohashi, D. Sakakibara, I. Asaji, S. Sugiyama, A. Yamaguchi, Y. Watanuki

ICES Journal of Marine Science fsz213 2019

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Surface zooplankton size and taxonomic composition in Bowdoin Fjord, north-western Greenland: A comparison of ZooScan, OPC and microscopic analyses Reviewed

Naito, A, Y. Abe, K. Matsuno, B. Nishizawa, N. Kanna, S. Sugiyama, A. Yamaguchi

Polar Science 19 120 - 129 2019

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Language：English Publishing type：Research paper (scientific journal)

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Open-sea and sea-ice fluctuations in nearshore Beaufort Sea during the last deglaciation derived from ion concentrations in ice wedge Reviewed

Iizuka, Y, C. Miyamoto, S. Matoba, G. Iwahana, K. Horiuchi, Y. Takahashi, N. Kanna, K. Suzuki, H. Ohno

Earth and Planetary Science Letter 515 58 - 66 2019

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Language：English Publishing type：Research paper (scientific journal)

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Coprecipitation of Fluoride into Jewelry Coral （Corallium） Skeletons Reviewed

Kanna, N, K. Tanaka, T. Ono, S. Ohde

Bulletin of the Society of Sea Water Science 64 ( 4 ) 225 - 228 2010

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Language：Japanese Publishing type：Research paper (scientific journal)

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Books

北極域の研究 : その現状と将来構想

北極環境研究コンソーシアム長期構想編集委員会, 北極環境研究コンソーシアム（ Role： Contributor）

海文堂出版 2024.3 （ ISBN:9784303562304 ）

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Total pages：x, 468p Language：Japanese

CiNii Books

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MISC

Biogeochemical Studies of Iron in Polar Oceans

Naoya Kanna

Transactions of The Research Institute of Oceanochemistry 38 ( 2 ) 74 - 79 2025.11

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海氷に含まれる鉄の生物利用能に関する研究

漢那直也, 西岡純

低温科学 82 93 - 101 2024.3

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DOI： 10.14943/lowtemsci.82.93

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グリーンランド・サイエンスウィーク（Greenland Science Week）参加報告

杉山慎, 漢那直也, 近藤研, 浅地泉, 山崎新太郎

雪氷 82 ( 2 ) 2020.3

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Language：Japanese Publishing type：Meeting report

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グリーンランド北西部ボードイン氷河前縁フィヨルドにおける水温・塩分・流速の長期係留観測

藤支良貴, 深町康, 漢那直也, 杉山慎

北海道の雪氷 38 15 - 18 2019

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Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal)

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Ocean measurement near the fronts of marine-terminating glaciers in Northwestern Greenland

Kanna, N, S. Sugiyama, T. Ando, I. Asaji, Y. Fujishi

Proceedings of 34th International Symposium on the Okhotsk Sea and Polar Oceans 254 - 254 2019

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Language：English Publishing type：Article, review, commentary, editorial, etc. (international conference proceedings)

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グリーンランドにおけるフィヨルドの持続可能性－カナックに暮らす人々と共に考える－

漢那直也

季刊誌「アークティック・サークル」 ( 109 ) 14 - 17 2018

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海氷の生物地球化学過程に関する観測

漢那直也, 牧和幸, 野村大樹

巡視船「そうや」海氷観測速報SIRAS-16 13 11 - 19 2016

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オホーツク海における海氷が関わる鉄の供給過程の解明

漢那直也, 西岡純, 豊田威信

低温科学 74 1 - 10 2016

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)

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季節海氷域における鉄の供給過程

漢那直也, 西岡純

月刊海洋 31 - 37 2016

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南部オホーツク海域の海氷に含まれる栄養塩と鉄の定量的評価

44 ( 10 ) 517 - 523 2012

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Presentations

Distribution of trace elements near the interface of the ocean and a tidewater glacier in the Southern Patagonia Icefield

Naoya Kanna, Shin Sugiyama, Daiki Nomura, Marius Schaefer, Hajime Obata

JpGU-AGU Joint Meeting 2025.5

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Event date： 2025.5

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極域海洋の鉄に関する生物地球化学的研究 Invited

漢那直也

石橋雅義先生記念講演会 2025.4.22

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Event date： 2025.4.22

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Spatial distribution of manganese in surface waters in the East Siberian Arctic Seas

N. Kanna, K. Tateyama, T. Waseda, A. Timofeeva, M. Papadimitraki, L. Whitmore, H. Obata, H. Ogawa, D. Nomura, I. Polyakov

ISAR-7 / Seventh International Symposium on Arctic Research 2023.3.7

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Event date： 2023.3.6 - 2023.3.10

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Challenges to Measure Iron(II) in Seawater under Sea ice

N. Kanna, H. Obata, D. Nomura, K. Okamura

Workshop on TRACE metal SAMplers and sensORS 2022.9.20

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Event date： 2022.9.19 - 2022.9.21

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Iron supply from a marine-terminating glacier into Bowdoin Fjord northwestern Greenland.

Kanna, N., S. Sugiyama, Y. Fukamachi, D. Nomura, J. Nishioka

ISAR-6/Sixth International Symposium on Arctic Research 2020.1

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Event date： 2020.1

Language：English

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岩手県大槌湾における二価鉄の挙動

漢那直也, 小畑元, 小川浩史, 福田秀樹

2025年度金沢大学共同利用研究集会 2025.11

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鉛直混合に伴う鉄供給に対する植物プランクトンの増殖応答評価

漢那直也, 小畑元, 近藤能子, 高野祥太郎, 黄国宏, 金仁熙

2025年度日本海洋学会秋季大会 2025.9

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鉛直混合に伴う鉄の供給が西部北太平洋亜寒帯域の植物プランクトン増殖に与える影響

漢那直也, 小畑元, 近藤能子, 高野祥太郎, 黄国宏, 金仁熙

2025年度東京大学大気海洋研究所共同利用研究集会 2024.12

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オホーツク海の海氷が関わる物質循環研究

漢那直也, 野村大樹

2024年度低温科学研究所共同研究集会 2024.10.22

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A comparison of iron and manganese distributions in the East Siberian Arctic Seas

Kanna, N., Tateyama, K., Waseda, T., Timofeeva, A., Papadimitraki, M., Whitmore, L., Obata, H., Nomura, D., Ogawa, H., Yamashita, Y., Polyakov, I.

JpGU-AGU Joint Meeting 2024.5.30

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海氷域における微量金属研究の取り組み

漢那直也

北極域研究に関する分野横断研究の発展のためのボトムアップ型研究集会 2021.12.8

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グリーンランド北西部のフィヨルドにおける溶存有機物と溶存鉄の動態

漢那直也, 杉山慎, 安藤卓人, 浅地泉, Wang Yefan, 櫻木雄太, 西岡純, 山下洋平

日本地球化学会 2021.9.8

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海氷域におけるFe(II)測定法の検討と現場計測

漢那直也, 小畑元, 野村大樹

2020年度東京大学大気海洋研究所共同利用研究集会 2021.3

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Iron and nutrients supply to a fjord from glacier-induced pumping in northwestern Greenland

Kanna, N, S. Sugiyama, Y. Fukamachi, D. Nomura, J. Nishioka

2020.12

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海氷域における還元態鉄測定法の検討

漢那直也, 小畑元

2020年度日本海洋学会秋季大会 2020.11

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Comprehensive ocean observations in Inglefield Bredning, Northwestern Greenland

Kanna, N., S. Sugiyama, T. Ando, I. Asaji, Y. Wang, Y. Sakuragi

Workshop on the Dynamics and Mass Budget of Arctic Glaciers & the IASC Network on Arctic Glaciology Annual Meeting 2020.1

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カービング氷河の融解に伴う海洋への鉄供給過程

漢那直也, 杉山慎, 深町康, 野村大樹, 西岡純

2019年度日本海洋学会秋季大会 2019.9

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Scientific collaboration with a local community in the Arctic - Our experience in Qaanaaq, northwestern Greenland - International conference

Kanna, N

Canada-Japan Future Collaboration Workshop on Arctic Environment based at Canadian High Arctic Research Station (CHARS) Campus 2019.7

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Co-working with local community -Glacier change, ice-ocean interaction, and their impacts on human society in Qaanaaq-

Kanna, N, S. Sugiyama

The Experience - Exchange Workshop on Thematic Network on Collaborative Resource Management and Monitoring 2019.6

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Iron and macronutrient distributions near the fronts of marine-terminating glaciers in Inglefield Gulf, northwestern Greenland International conference

Kanna, N, S. Sugiyama, T. Ando, I. Asaji, Y. Fujishi, J. Nishioka

JpGU-AGU Joint Meeting 2019 2019.5

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Ocean measurements near the fronts of marine-terminating glaciers in northwestern Greenland International conference

Kanna, N, S. Sugiyama, T. Ando, I. Asaji, Y. Fujishi

The 34th International Symposium on the Okhotsk Sea & Polar Oceans 2019.2

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グリーンランドにおけるカービング氷河前フィヨルドの海水特性（レビュー）

漢那直也

2019年度低温研共同研究集会 2019.1

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Biogeochemical surveys near the fronts of marine-terminating glaciers in Inglefield Gulf, Northwestern Greenland International conference

Kanna, N, S. Sugiyama, T. Ando, I. Asaji, Y. Fujishi

Workshop on the Dynamics and Mass Budget of Arctic Glaciers & the IASC Network on Arctic Glaciology Annual Meeting 2019.1

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グリーンランド北西部イングレフィールドフィヨルド観測速報

漢那直也, 杉山慎, 安藤卓人, 浅地泉, 藤支良樹

2018年度低温研共同研究集会 2018.12

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グリーンランド北西部におけるカービング氷河前縁フィヨルドの海水特性

漢那直也, 杉山慎, 榊原大貴, 深町康, 野村大樹

2018年度日本海洋学会秋季大会 2018.9

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An evidence of a subglacial freshwater discharge into a fjord at the boundary of Bowdoin Glacier International conference

Kanna, N, S. Sugiyama, D. Sakakibara, Y. Fukamach, D. Nomura, S. Fukumoto, E. Podolskiy

JpGU-AGU Joint Meeting 2018 2018.5

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Interdisciplinary research on Arctic glaciers and ocean interaction

Naoya Kanna

2018.4

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グリーンランドにおける氷河氷床・海洋相互作用－カービング氷河前縁での海洋調査－

漢那直也

第4 回北極域研究推進プロジェクト全体会合 2018.4

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Transports of macronutrient and inorganic carbon to surface waters by subglacial meltwater plume in Bowdoin Fjord in northwest Greenland. International conference

Kanna, N, S. Sugiyama, Y. Ohashi, D. Sakakibara, B. Nishizawa, I. Asaji, Y. Fukamachi, D Nomura

AGU Ocean Science Meeting 2018 2018.2

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Physical and Biogeochemical ocean studies at the boundary region of Bowdoin Glacier and its Fjord, Northwestern Greenland International conference

Kanna, N, S. Sugiyama, D. Sakakibara, Y. Fukamachi, D. Nomura, S. Fukumoto, S. Yamasaki, E. Podolskiy, A. Yamaguchi

Workshop on the Dynamics and Mass Budget of Arctic Glaciers & the IASC Network on Arctic Glaciology Annual Meeting 2018.1

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Glacierocean interaction: oceanographic observations in fjord near a calving front of Bowdoin Glacier, northwest Greenland International conference

Kanna, N, S. Sugiyama, D. Sakakibara, Y. Fukamachi, D. Nomura, S. Fukumoto, E. Podolskiy

ISAR-5 / Fifth International Symposium on Arctic Research 2018.1

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グリーンランド北西部ボードイン氷河と海洋の相互作用に関する研究

漢那直也, 杉山慎, 榊原大貴, 深町康, 野村大樹, 福本俊吾, 山崎新太郎, E. Podolskiy

2017年度低温研共同研究集会 2017.11

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氷河融氷水の流出が駆動するグリーンランドフィヨルドにおける栄養塩輸送過程

漢那直也, 杉山慎, 大橋良彦, 榊原大貴, 西沢文吾, 浅地泉, 深町康

2017年度秋季海洋学会 2017.10

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カービング氷河の高濁度融解水流出がフィヨルド生態系へ与える影響

漢那直也, 杉山慎, 大橋良彦, 榊原大貴, 西沢文吾, 浅地泉, 深町康, 阿部義之, 山口篤

2017年度雪氷研究大会 2017.9

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グリーンランド北部ボードイン氷河前縁部における海洋観測

漢那直也, 杉山慎, 榊原大貴, 深町康, 野村大樹, 福本俊吾, 山崎新太郎, E. Podolskiy

2017年度低温研共同研究集会 2017.8

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カービング氷河の融解に伴う高濁度水流出がフィヨルド生態系へ与える影響

漢那直也, 杉山慎, 大橋良彦, 榊原大貴, 西沢文吾, 浅地泉, 深町康, 阿部義之, 山口篤

第3回北極域研究推進プロジェクト全体会合 2017.5

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Effect of subglacial meltwater plume formation on phytoplankton growth in the fjord of Bowdoin Glacier in northwest Greenland International conference

Kanna, N, S. Sugiyama, Y. Ohashi, D. Sakakibara, B. Nishizawa, I. Asaji, Y. Fukamach

JpGU-AGU Joint Meeting 2017 2017.5

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グリーンランドにおける氷河氷床・海洋相互作用

漢那直也

第2回北極域研究推進プロジェクト全体会合 2017.3

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Existence form of iron derived from sea ice and its bio-availability in seawater International conference

Kanna, N, J. Nishioka

East Asia GEOTRACES Workshop, Trace Element and Isotope (TEI) study in the Northwestern Pacific and its marginal seas 2017.1

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Turbid meltwater discharge and its impact on phytoplankton growth in the fjord of Bowdoin Glacier in northwest Greenland International conference

Kanna, N, S. Sugiyama, Y. Ohashi, D. Sakakibara, B. Nishizawa, I. Asaji, Y. Fukamachi

Workshop on the Dynamics and Mass Budget of Arctic Glaciers & the IASC Network on Arctic Glaciology Annual Meeting 2017.1

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Turbid water and chlorophyll a distributions near the interface of the ocean and a tidewater glacier in northwest Greenland

Kanna, N, S. Sugiyama, Y. Ohashi, D. Sakakibara, B. Nishizawa, I. Asaji, Y. Fukamachi

2016.12

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グリーンランド北西部 Bowdoin 氷河の融解水流出過程が海洋の基礎生産に与える影響

漢那直也, 杉山慎, 大橋良彦, 榊原大貴, 西沢文吾, 浅地泉, 深町康

2016年度低温研共同研究集会 2016.12

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Ocean observations at the ice-ocean interface of the marine-terminating glacier in the northwest Greenland International conference

Naoya Kanna

Finnish-Japanese early career arctic scientists (ECAS) workshop 2016.10

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海氷から海洋へ供給された鉄の存在状態と生物利用能

漢那直也, 西岡純, 村山愛子

2016年度日本海洋学会秋季大会 2016.9

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Dissolution of iron from sea icederived particles in Seawater International conference

Kanna. N, J. Nishioka, D. Lannuzel, P. van der Merwe

GoldSchmidt annual meeting 2016.6

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Iron supply processes associated with melting of seasonal sea ice in the sub-polar marginal sea; the Sea of Okhotsk International conference

Kanna. N, J. Nishioka, T. Toyota

ESSAS Annual Science Meeting 2016.3

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オホーツク海における鉄の供給及び植物プランクトンの増殖に海氷が果たす役割

漢那直也, 豊田威信, 西岡純

2015年度東京大学大気海洋研究所共同利用研究集会 2016.3

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Iron enrichment by sea ice melting in the surface water in the Okhotsk Sea International conference

Kanna. N, J. Nishioka, T. Toyota

GoldSchmidt annual meeting 2015.8

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Impacts of iron and macro-nutrients released from sea ice on the nutritional status of surface waters in the Sea of Okhotsk International conference

Kanna. N, J. Nishioka, T. Toyota

PAMS meeting 2015.5

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オホーツク海の表層鉄濃度を高める海氷融解プロセス

漢那直也, 西岡純, 豊田威信, 村山愛子

2015年度日本海洋学会春季大会 2015.3

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Iron and macro-nutrient concentrations in sea ice and their impact on the nutritional status of surface waters in the southern Okhotsk Sea International conference

Kanna. N, T. Toyota, J. Nishioka

AOGS annual meeting 2014.7

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オホーツク海表層への鉄の輸送及び植物プランクトンの増殖に海氷が果たす役割

漢那直也, 村山愛子, 豊田威信, Yu N. Volkov, 西岡純

2014年度日本海洋学会春季大会 2014.3

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Iron and macro-nutrient concentrations in sea ice and their impact on the nutritional status of surface waters in the southern Okhotsk Sea International conference

Kanna. N, T. Toyota, J. Nishioka

IGS International Symposium on Sea Ice in a Changing Environment 2014.3

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The impact of sea ice melting on the macro- and micro-nutrient conditions and on the community composition of phytoplankton International conference

Kanna. N, T. Toyota, J. Nishioka

AGU Ocean sciences meeting 2014 2014.2

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The impact of sea ice melting on iron concentration in surface water in the southern Sea of Okhotsk International conference

Kanna. N, J. Nishioka

ESSAS Annual Science Meeting 2013.1

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Bioavailability of sea ice-derived iron for phytoplankton growth International conference

Kanna. N, J. Nishioka

PICES Annual Meeting 2012.10

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Awards

海洋化学奨励賞U40

2025.4 海洋化学研究所

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Top cited article 2020–2021

2022.4 Willey Iron Supply by Subglacial Discharge Into a Fjord Near the Front of a Marine-Terminating Glacier in NorthwesternGreenland

Naoya Kanna, Shin Sugiyama, Yasushi Fukamachi, Daiki Nomura, Jun Nishioka

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Top downloaded paper 2018–2019

2020.4 Willey Upwelling of Macronutrients and Dissolved Inorganic Carbon by a Subglacial Freshwater Driven Plume in Bowdoin Fjord, Northwestern Greenland

Naoya Kanna, Shin Sugiyama, Yoshihiko Ohashi, Daiki Sakakibara, Yasushi Fukamachi, Daiki Nomura

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Top cited article 2018–2019

2020.1 Willey Upwelling of Macronutrients and Dissolved Inorganic Carbon by a Subglacial Freshwater Driven Plume in Bowdoin Fjord, Northwestern Greenland

Naoya Kanna, Shin Sugiyama, Yoshihiko Ohashi, Daiki Sakakibara, Yasushi Fukamachi, Daiki Nomura

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地球化学優秀修士論文賞

2012.3 北海道大学

漢那直也

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Research Projects

Processes at the calving glacier front -Direct observations of the boundaries of ice, ocean/lake, atmosphere and land-

Grant number：25H00452 2025.04 - 2030.03

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

杉山慎, Podolskiy Evgeny, 坂井亜規子, 藤井昌和, 漢那直也, 野村大樹

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Grant amount：\196430000 （ Direct expense: \151100000 、 Indirect expense：\45330000 ）

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雪や氷の融解は海洋の生物生産と二酸化炭素吸収にどのような影響を与えるのか？

Grant number：25H00679 2025.04 - 2029.03

日本学術振興会科学研究費助成事業基盤研究(A)

野村大樹, 漢那直也, 藤原周, 青木茂, 渡邉英嗣

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Grant amount：\46410000 （ Direct expense: \35700000 、 Indirect expense：\10710000 ）

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大陸棚を取り巻く微量元素循環―オホーツク海とベーリング海の対比から探る―

Grant number：25H01898 2025.04 - 2027.03

日本学術振興会科学研究費助成事業学術変革領域研究(A)

漢那直也

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Grant amount：\11050000 （ Direct expense: \8500000 、 Indirect expense：\2550000 ）

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川と海の境界における還元態鉄の生成･消滅プロセス

2024.10 - 2025.09

公益財団法人クリタ水・環境科学振興財団

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温暖化するパタゴニアでピオ・オンセ氷河が拡大するのはなぜか？

Grant number：24KK0192 2024.09 - 2027.03

日本学術振興会科学研究費助成事業国際共同研究加速基金(海外連携研究)

杉山慎, 漢那直也, 波多俊太郎, 近藤研

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Grant amount：\20930000 （ Direct expense: \16100000 、 Indirect expense：\4830000 ）

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南大洋の海氷の大規模変動に伴う生物生産と炭素循環の定量的時系列観測

Grant number：24H00759 2024.04 - 2028.03

日本学術振興会科学研究費助成事業基盤研究(A)

真壁竜介, 杉江恒二, 黒沢則夫, 松田亮, 漢那直也

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Authorship：Coinvestigator(s)

Grant amount：\47840000 （ Direct expense: \36800000 、 Indirect expense：\11040000 ）

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鉄不足の南極海で植物プランクトンが増殖する仕組み－海氷からの鉄供給は重要か？－

Grant number：23K17028 2023.04 - 2026.03

日本学術振興会科学研究費助成事業若手研究

漢那直也

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Grant amount：\4680000 （ Direct expense: \3600000 、 Indirect expense：\1080000 ）

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海洋の微量栄養素マンガンを用いたオホーツク海高密度陸棚水の追跡

Grant number：23H04814 2023.04 - 2025.03

日本学術振興会科学研究費助成事業学術変革領域研究(A)

漢那直也

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Grant amount：\10010000 （ Direct expense: \7700000 、 Indirect expense：\2310000 ）

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海洋におけるマンガンサイクルの解明に向けた3価マンガン測定法の確立

2022.04 - 2023.03

公益財団法人海洋化学研究所

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積雪および海氷中の還元態鉄の生成過程

2020.04 - 2021.03

公益財団法人海洋化学研究所

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Authorship：Principal investigator

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北極圏海氷域における微量金属元素「マンガン」の役割

2020 - 2023

日本学術振興会科学研究費補助金若手研究

漢那直也

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Authorship：Principal investigator

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氷と海の境界で起こる微量金属元素の化学反応

2020 - 2021

日本学術振興会特別研究員奨励費PD

漢那直也

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氷河流出水と海水の密度差を駆動力とする鉄ポンピングシステムの解明

2018.04 - 2019.02

日本科学協会笹川科学研究助成

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Grant type：Competitive

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The role of sea ice on iron transport processes in surface water and their impact on the phytoplankton growth in the Sea of Okhotsk

2014.10 - 2015.01

University of Tasmania Tsuneichi Fujii Scholarship

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Grant type：Competitive

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Social Activities

Sea-Ice School 2026

Role(s)：Lecturer

Saroma, Hokkaido, Japan 2026.2

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Type：Visiting lecture

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氷河ポンプが駆動するグリーンランドの海洋環境～氷河の融解加速により海のプランクトンの群集構造が変わる～

Role(s)：Informant

北海道大学プレスリリース 2022.11.16

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BEPSII Sea-Ice School 2022

Role(s)：Lecturer

Cambridge Bay, Canada 2022.5.14 - 2022.5.23

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Type：Visiting lecture

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生物圏環境科学特別講義

Role(s)：Lecturer

富山大学 2020.12.23 - 2020.12.24

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Type：Visiting lecture

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氷河ポンプがフィヨルドの豊かな海洋生態系を支える～海の栄養分が補給・撹拌・移送されるしくみを解明～

Role(s)：Informant

北海道大学プレスリリース 2020.9.30

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Type：Internet

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オホーツク海の豊かな生態系を育む流氷の役割を解明～生物に必要な鉄分を流氷が運ぶ～

Role(s)：Informant

北海道大学プレスリリース 2020.4

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Type：Internet

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Japanimiut sermimik immallu pissusaanik misissuinerat Qaanaami

Role(s)：Appearance

Public Outreach Day in Greenland Science Week, Nuuk, Greenland 2019.12.5

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Type：Seminar, workshop

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Workshop on Glacier and Ocean interaction in Qaanaaq and Qeqertat, Greenland

Role(s)：Presenter,　Planner,　Organizing member

2019.8

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Type：Citizen’s meeting/Assembly

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グリーンランドの氷河と海の境界で起こる生物地球化学的諸過程

Role(s)：Lecturer

RC-91先端深海観測技術研究会 2019.2

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Type：Lecture

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栄養を海面に押し上げ－フィヨルドの湧昇流－

Role(s)：Informant

読売新聞 2018.9.2

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Type：Newspaper, magazine

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フィヨルドの生態系を支える「氷河ポンプ」を発見～プルームによる栄養塩輸送が植物プランクトンを育む～

Role(s)：Informant

北海道大学プレスリリース 2018.8.22

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Type：Internet

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Subglacial Meltwater Boosts Greenland Ecosystems and Locks Carbon

Role(s)：Informant

Glacier Hub 2018.8.7

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Type：Internet

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Glacial Meltwater Plumes Support Greenland Phytoplankton Blooms

Role(s)：Informant

2018.7.17

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Type：Internet

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Workshop on Glacier and Ocean interaction in Qaanaaq and Qeqertat, Greenland

Role(s)：Appearance

2018.7

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Type：Citizen’s meeting/Assembly

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Workshop on Glacier and Ocean interaction in Qaanaaq, Greenland

Role(s)：Appearance

2017.7

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Type：Citizen’s meeting/Assembly

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オホーツク海の流氷は栄養物質を運び豊かな生態系を支えているのか？

Role(s)：Contribution

北海道大学低温科学研究所研究トピックス 2016.10

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Type：Internet

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