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研究内容 地震波形記録を主として用いた大〜巨大地震の震源過程の解析や、都市の広がる平野・盆地の地下構造の調査を行い、さらに地形・地質学的情報を含むあらゆる情報を駆使した地震動予測計算を行う。 主要論文・著書 Asano, K. and T. Iwata, Source rupture processes of the foreshock and mainshock in the 2016 Kumamoto earthquake sequence estimated from the kinematic waveform inversion of strong motion data, Earth Planets Space, 68:147, doi:10.1186/s40623-016-0519-9, 2016. Mai, P.M., D. Schorlemmer, M. Page, J.-P. Ampuero, K. Asano, M. Causse, S. Custodio, W. Fan, G. Festa, M. Galis, F. Gallovic, W. Imperatori, M. K?ser, D. Malytskyy, R. Okuwaki, F. Pollitz, L. Passone, H. Razafindrakoto, H. Sekiguchi, S.G. Song, S. Somala, K. Thingbaijam, C. Twardzik, M. van Driel, J. Vyas, R. Wang, Y. Yagi, and O. Zielke, The Earthquake-Source Inversion Validation (SIV) Project, Seismol. Res. Lett., 87(3), 690-708, 2016. Asano, K., H. Sekiguchi, T. Iwata, M. Yoshimi, T. Hayashida, H. Saomoto, and H. Horikawa, Modelling of wave propagation and attenuation in the Osaka sedimentary basin, western Japan, during the 2013 Awaji Island earthquake, Geophys. J. Int., 204(3), 1678-1694, 2016. Zaheer Abbas Kazmi, Kazuo Konagai, Haruko Sekiguchi, Tomohiro Fujita, Extracting earthquake induced Lagrangian ground displacements and their implication for source inversion analysis, Soil Dynamics and Earthquake Engineering, 48, 198-208, 2013. Suzuki, W., S. Aoi, H. Sekiguchi, T. Kunugi, Rupture process of the 2011 Tohoku-Oki megathrust earthquake (M9.0) inverted from strong motion data, Geophysical Research Letters, 38, DOI:10.1029/2011GL049136. Sekiguchi, H. and M. Yoshimi, Broadband ground motion reconstruction for the Kanto basin during the 1923 Kanto earthquake, Pure and Applied Geophysics, 168, 609-630, DOI 10.1007/s00024-010-0142-9, 2011. 関口春子・吉見雅行・堀川晴央、震源パラメータのばらつきを考慮した相模トラフ沿いの地震の震源モデルと地震動の予測、第13回日本地震工学シンポジウム論文集、1951-1956、2010. 鈴木亘、青井真、関口春子, 複雑な断層面形状を考慮した2009年駿河湾の地震の震源過程の推定、第13回日本地震工学シンポジウム論文集、3565-3571、2010． Suzuki, W., S. Aoi, and H. Sekiguchi, Rupture Process of the 2008 Iwate-Miyagi Nairiku, Japan, Earthquake Derived from Near-Source Strong-Motion Records, Bulletin of the Seismological Society of America, 100(1), 256-266, 2010 Suzuki, W., S. Aoi, and H. Sekiguchi, Rupture process of the 2008 Northern Iwate intraslab earthquake derived from strong-motion records, Bulletin of the Seismological Society of America, 99(5), 2825-2835, 2009. Sekiguchi, H., M. Yoshimi, H. Horikawa, K. Yoshida, S. Kunimatsu, and K. Satake, Prediction of ground motion in the Osaka sedimentary basin associated with the hypothetical Nankai earthquake, Journal of Seismology, 12, 185-195, 2008. 栗山雅之・隈元 崇・関口春子・岩田知孝, 地震規模予測の考え方の違いが長大活断層で発生する地震の強震動予測結果にもたらす影響の評価 -糸魚川‐静岡構造線活断層帯北部・中部を震源断層として‐, 自然災害科学, 27, 45-67, 2008. Aoi, S., R. Honda, N. Morikawa, H. Sekiguchi, H. Suzuki, Y. Hayakawa, T. Kunugi, H. Fujiwara, Three-dimensional finite difference simulation of long-period ground motions for the 2003 Tokachi-oki, Japan, earthquake, J. Geophys. Res., 113, B07302, doi:10.1029/2007JB005452, 2008. Honda, R., S. Aoi, H. Sekiguchi, N. Morikawa, and H. Fujiwara, Imaging an asperity of the 2003 Tokachi-oki earthquake using a dense strong-motion seismograph network, Geophysical Journal International, 172, 1104-1116, 2008.. Sekiguchi, H., S. Aoi, R. Honda, N. Morikawa, T. Kunugi, and H. Fujiwara, Rupture process of the 2005 West Off Fukuoka Prefecture earthquake obtained from strong motion data of K-NET and KiK-net, Earth, Planets and Space, 58, 37-43, 2006. Honda, R., S. Aoi, N. Morikawa, H. Sekiguchi, T. Kunugi, and H. Fujiwara, Ground motion and rupture process of the 2004 Mid Niigata Prefecture earthquake obtained from strong motion data of K-NET and KiK-net, Earth, Planets and Space，57，527-532, 2005. Yoshimi, M., T. Komatsubara, Y. Miyachi, K. Kimura, H. Sekiguchi, M. Saeki, S. Kunimatsu, K. Yoshida, M. Ozaki, T. Nakazawa, R. Nakashima, and H. Saomoto, Landform and local site effects on the colonies worst-hit by the 2004 mid-Niigata prefecture, Japan, earthquake, Earth, Planets and Space，57，667-672, 2005. Wenbo Zhang、岩田知孝、入倉孝次郎、Arben Pitarka、関口 春子，Dynamic rupture process of the 1999 Chi-Chi, Taiwan, earthquake， GEOPHYSICAL RESEARCH LETTERS，31-L1065，pp.do2004GL019827-、2004/05 本多 亮、青井 真、森川信之、関口 春子、功刀 卓、藤原 広行，Ground motion and rupture process of the 2003 Tokachi-oki earthquake obtained from strong motion data of K-NET and KiK-net， EARTH PLANETS AND SPACE，56-3，pp.317-322、2004/03 Gulum Birgoren、関口 春子、入倉孝次郎，Rupture model of the 1999 D?zce, Turkey, earthquake deduced from high and low frequency strong motion data， GEOPHYSICAL RESEARCH LETTERS，31-5，pp.L05610 10.1029/2003G-、2004/03 Wenbo Zhang、岩田知孝、入倉孝次郎、関口 春子、Michel Bouchon，Heterogeneous distribution of the dynamic source parameters of the 1999 Chi-Chi, Taiwan, earthquake， JOURNAL OF GEOPHYSICAL RESEARCH，108-，pp.2232 doi:10.1029/200-、2003/05 Sekiguchi, H., K. Irikura and T. Iwata, Source inversion for estimating continuous slip distribution on the fault - Introduction of Green's functions convolved with a correction function to give moving dislocation effects in subfaults -, Geophysical Journal International, 150, 377-391, 2002. Sekiguchi, H. and T. Iwata, Rupture process of the 1999 Kocaeli, Turkey, earthquake estimated from strong motion waveforms, Bulletin of the Seismological Society of America, 92, 300-311, 2002. Bouin, M.-P., M. Cocco, G. Cultrera, H. Sekiguchi, K. Irikura, The rupture process of the MJ=7.2 1995, Hyogo-ken Nanbu (Kobe) earthquake deduced from S-wave polarization analysis, Geophysical Journal International, 143, 521-544, 2000. Sekiguchi, H., K. Irikura, and T. Iwata, Fault Geometry at the Rupture Termination of the 1995 Hyogo-ken Nanbu Earthquake, Bulletin of the Seismological Society of America, 90-1, 117-133, 2000. Sekiguchi, H., K. Irikura, and T. Iwata, Detailed source process of the 1995 Hyogo-ken Nanbu (Kobe) earthquake using near-field strong ground motion data, Proceedings of the 10th Japan Earthquake Engineering Symposium, 1, 67-72, 1998. Iwata T., H. Sekiguchi, A. Pitarka, K. Kamae, K. Irikura, Evaluation of strong ground motions in the source area during the 1995 Hyogoken-Nanbu (Kobe) earthquake, Proceedings of 10th Japan Earthquake Engineering Symposium, 1, 73-78, 1998. Pitarka, A., K. Irikura, T. Iwata, and H. Sekiguchi, Three-dimensional simulation of the near-fault ground motion for the 1995 Hyogo-ken Nanbu (Kobe), Japan, earthquake, Bulletin of the Seismological Society of America, 88, 428-440, 1998. Bouchon M., H. Sekiguchi, K. Irikura, and T. Iwata, Some characteristics of the stress field of the 1995 Hyogo-ken Nanbu earthquake, Journal of Geophysical Research, 103, 24271-24282, 1998. 岩田知孝・関口春子，深部地盤構造と強震動予測，物理探査学会５０周年記念号IIケーススタディ編，第７章地震防災，1217-1220, 1998． Irikura, K., T. Iwata, H. Sekiguchi, A. Pitarka, and K. Kamae, Lesson from the 1995 Hyogo-Ken Nanbu earthquake: Why were such destructive motions generated to buildings?, Journal of Natural Disaster Science, 18-2, 99-127, 1996. Sekiguchi, H. K. Irikura, T. Iwata, Y. Kakehi and M. Hoshiba, Minute locating of faulting beneath Kobe and the waveform inversion of the source process during the 1995 Hyogo-ken Nanbu, Japan, earthquake using strong ground motion records, Journal of Physics of the Earth, 44, 473-487, 1996. Sekiguchi, H., K. Irikura, T. Iwata, Y. Kakehi and M. Hoshiba, Determination of the location of faulting beneath Kobe during the 1995 Hyogo-ken Nanbu, Japan, earthquake from near-source particle motion, Geophysical Research Letters, 23, 4, 387-390, 1996. |