研究者詳細 - 竹中　博士

MISC - 竹中　博士

分割表示 351 件中 241 - 260 件目／全件表示 >>

1997年鹿児島県北西部地震の余震波形に見られるS波偏向異方性 (1)

藤井雄士郎, 竹中博士, 松島健, 馬越孝道

地球惑星科学関連学会合同大会予稿集 1998 1998年

1997年鹿児島県北西部地震の余震観測及び波形モデリング

藤井雄士郎, 二牟礼勇人, 竹中博士, 松島健, 馬越孝道, 田代勝也, 鈴木貞臣

日本地震学会秋季大会講演予稿集 1997 ( 2 ) 145 1997年9月

Teleseismic waveform synthesis for ocean-bottom stations using a new, very effective 2.5-D finite difference technique(共著)

Proceedings of International Workshop on Scientific Use of Submarine Cables(Feb. 25-28,1997, Okinawa Japan) 23 - 26 1997年

Teleseismic waveform synthesis for ocean-bottom stations using a new, very effective 2.5-D finite difference technique(共著)

Proceedings of International Workshop on Scientific Use of Submarine Cables(Feb. 25-28,1997, Okinawa Japan) 23 - 26 1997年

Comparison of Q(C)(-1) estimates from coda envelopes constructed from one- and multi-component seismograms

Y Mamada, H Takenaka

JOURNAL OF PHYSICS OF THE EARTH 45 ( 6 ) 455 - 466 1997年

Coda Q^-1 in Awaji island estimated from the aftershock records of the 1995 Hyogo-ken Nanbu earthquake (共著)

J. Phys. Earth 45 ( 2 ) 147 - 154 1997年

Waveform analysis of the felt earthquakes associated with the endogenous growth of the lava dome at Unzen volcano (共著)

OKAMATSU N.

Proceedings of Unzen International Workshop : Decade Volcano and Scientific Drilling 37 - 39 1997年

Comparison of Qc^-1 estimates from coda envelopes constructed from one- and multi-component seismograms (共著)

J. Phys. Earth 45 ( 6 ) 455 - 466 1997年

1995年奄美大島近海地震余震の喜界島における強震波形のモデリング(共著)

竹中博士, 藤井雄士郎, 奥村貴史, 鈴木貞臣

地学雑誌 106 ( 4 ) 525 - 536 1997年

記述言語：日本語出版者・発行元：公益社団法人東京地学協会

Twin earthquakes (the Amami-Oshima-Kinkai Earthquakes) occurred at the southeast from Kikai Island on October 18 (M_JMA 6.6) and 19 (M_JMA 6.5), 1995. We observed the aftershocks at Kikai Island from October 21, 1995 to February 18, 1996 using the broadband strong-motion seismometer (VSE11C/12C). After all, we observed 40 events that include the second largest aftershock, the event of November 1 (M_JMA 5.6).<BR>In this paper we model the strong-motion records of six events among the observed aftershocks, which have large amplitudes and rather simple waveforms to estimate their focal parameters (focal depth, strike, dip, rake, seismic moment and rise time), by try and error. The results suggest the following : <BR>(1) The strikes of the mainshocks of October 18 (the first mainshock) and 19 (the second mainshock) might be about N230°E and N185°E, respectively;<BR>(2) The hypocenter of the first mainshock might locate near the north edge of the fault which was ruptured from north to south along the fault strike, while the hypocenter of the second one might locate near the south edge of the fault which was ruptured from south to north.

DOI： 10.5026/jgeography.106.4_525

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Waveform analysis of the felt earthquakes associated with the endogenous growth of the lava dome at Unzen volcano (共著)

Proceedings of Unzen International Workshop : Decade Volcano and Scientific Drilling 37 - 39 1997年

Coda Q(-1) in Awaji Island estimated from the aftershock records of the 1995 Hyogo-ken Nanbu earthquake

Y Mamada, T Okumura, H Takenaka, S Suzuki, S Saito, M Furumura, T Sasatani, T Matsushima, T Furumura

JOURNAL OF PHYSICS OF THE EARTH 45 ( 2 ) 147 - 154 1997年

遠地地震波形データを用いた断層の検出 III 検出精度改善のための工夫

村越匠, 竹中博士, 末次大輔

地球惑星科学関連学会合同大会予稿集 1997 1997年

2.5次元弾性平面波入射問題の時間領域差分解法

竹中博士, 岡元太郎, KENNETT B L N

地球惑星科学関連学会合同大会予稿集 1997 1997年

S波とSP変換波の振幅を用いた堆積層のV_P/V_Sの「簡単な」推定法

竹中博士, 斉田智治, 藤井雄士郎

地球惑星科学関連学会合同大会予稿集 1997 1997年

2.5次元計算法で調べる1992年ニカラグア地震の断層面の広がり

岡元太郎, 竹中博士

日本地震学会秋季大会講演予稿集 1997 1997年

遠地実体波の非常に効率的な2.5次元計算法

竹中博士, 岡元太郎, KENNETT B L N

日本地震学会秋季大会講演予稿集 1997 1997年

広帯域地震計の埋設比較観測 (II)

吉田康宏, 神定健二, 金嶋聡, 大滝寿樹, 田中明子, 末次大輔, 神谷真一郎, 石原靖, 竹中博士

日本地震学会秋季大会講演予稿集 1997 1997年

ベクトル合成振幅のコーダエンベロープのQcと1成分波形のコーダエンベロープQcの比較

侭田豊, 竹中博士

地球惑星科学関連学会合同大会予稿集 1997 1997年

A 2.5-D time-domain elastodynamic equation for a general anisotropic medium

H Takenaka, BLN Kennett

GEOPHYSICAL JOURNAL INTERNATIONAL 127 ( 2 ) F1 - F4 1996年11月

記述言語：英語出版者・発行元：OXFORD UNIV PRESS

In order to provide a quantitative analysis of real seismic records from complex regions we need to be able to calculate the wavefields in three dimensions. However, full 3-D modelling of seismic-wave propagation is still computationally intensive. An economical approach to the modelling of seismic-wave propagation which includes many important aspects of the propagation process is to examine the 3-D response of a model where the material parameters vary in two dimensions. Such a configuration, in which a 3-D wavefield is calculated for a 2-D medium, is called the '2.5-D problem'. Recently, Takenaka & Kennett (1996) proposed a 2.5-D time-domain elastodynamic equation for seismic wavefields in models with a 2-D variation in structure but obliquely incident plane waves in the absence of source. This approach is useful even for non-plane waves. In the presence of source a new 2.5-D elastodynamic equation for general anisotropic media can be derived in the time domain based on the Radon transform over slowness in the direction with constant medium properties. The approach can also be formulated in terms of velocity-stress, a representation which is well suited to the use of numerical techniques for 2-D time-domain problems such as velocity-stress finite-difference or velocity-stress pseudospectral techniques.

DOI： 10.1111/j.1365-246X.1996.tb04716.x

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A 2.5-D time-domain elastodynamic equation for a general anisotropic medium(共著)

TAKENAKA H, KENNETT B L N

Geophys. J. Int. 127 ( 2 ) F1 - F4 1996年11月

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