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研究業績

査読有り（JAMSTECでの成果）

Gou Fujie, Shuichi Kodaira, Koichiro Obana, Yojiro Yamamoto, Takeshi Isse, Tomoaki Yamada, Tetsuo No, Yasuyuki Nakamura, Seiichi Miura. The nature of the Pacific plate as subduction inputs to the northeastern Japan arc and its implication for subduction zone processes. Progress in Earth and Planetary Science, 2023, 10, 50, doi: 10.1186/s40645-023-00578-8
Yasuyuki Nakamura, Shuichi Kodaira, Gou Fujie, Mikiya Yamashita, Koichiro Obana and Seiichi Miura. Incoming plate structure at the Japan Trench subduction zone revealed in densely spaced reflection seismic profiles. Progress in Earth and Planetary Science, 2023, 10, doi: 10.1186/s40645-023-00579-7
Jesse Hutchinson, Honn Kao, Michael Riedel, Koichiro Obana, Kelin Wang, Shuichi Kodaira, Tsutomu Takahashi & Yojiro Yamamoto. Tectonic evolution of the Nootka fault zone and deformation of the shallow subducted Explorer plate in northern Cascadia as revealed by earthquake distributions and seismic tomography. Scientific Reports, 2023, 13, doi: 10.1038/s41598-023-33310-z
Koichiro Obana, Tsutomu Takahashi, Yojiro Yamamoto, Takeshi Iinuma, Yasuyuki Nakamura, Gou Fujie, Seiichi Miura and Shuichi Kodaira. Fault geometry of M6-class normal-faulting earthquakes in the outer trench slope of Japan Trench from ocean bottom seismograph observations. Progress in Earth and Planetary Science, 2023, 10, 1, doi: 10.1186/s40645-023-00541-7
Dirk Metz, Koichiro Obana, Yoshio fukao. Remote hydroacoustic detection of an airplane crash. PURE AND APPLIED GEOPHYSICS, 2022, doi: 10.1007/s00024-022-03117-6
Takashi Tonegawa, Eiichiro Araki, Hiroyuki Matsumoto, Toshinori Kimura, Koichiro Obana, Gou Fujie, Ryuta Arai, Kazuya Shiraishi, Masaru Nakano, Yasuyuki Nakamura, Takashi Yokobiki, Shuichi Kodaira. Extraction of P wave from ambient seafloor noise observed by distributed acoustic sensing. GEOPHYSICAL RESEARCH LETTERS, 2022, 49, 4, doi: 10.1029/2022GL098162
Tsutomu Takahashi , Yuka Kaiho, Yasushi Ishihara, Koichiro Obana, Seiichi Miura, Shuichi Kodaira and Yoshiyuki Kaneda. Trans-dimensional imaging of the random inhomogeneity structure in the southern Ryukyu arc, Japan. GEOPHYSICAL JOURNAL INTERNATIONAL, 2021, 229, 2, p. 1392-1407, doi: 10.1093/gji/ggab518
Yojiro Yamamoto, Tsutomu Takahashi, Yuka Kaiho, Koichiro Obana, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. Corrigendum to “Seismic structure off the Kii Peninsula, Japan, deduced from passive- and active-source seismographic data” [Earth Planet. Sci. Lett. 461 (2017) 163–175]. EARTH AND PLANETARY SCIENCE LETTERS, 2021, 568, doi: 10.1016/j.epsl.2021.117051
Koichiro Obana, Gou Fujie, Yojiro Yamamoto, Yuka Kaiho, Yasuyuki Nakamura, Seiichi Miura, Shuichi Kodaira. Seismicity around the trench axis and outer-rise region of the southern Japan Trench, south of the main rupture area of the 2011 Tohoku-oki earthquake. GEOPHYSICAL JOURNAL INTERNATIONAL, 2021, 226, 1, p. 131-145, doi: 10.1093/gji/ggab093
Hiroyuki Matsumoto, Eiichiro Araki, Toshinori Kimura, Gou Fujie, Kazuya Shiraishi, Takashi Tonegawa, Koichiro Obana, Ryuta Arai, Yuka Kaiho, Yasuyuki Nakamura, Takashi Yokobiki, Shuichi Kodaira, Narumi Takahashi, Robert Ellwood, Victor Yartsev, Martin Karrenbach. Detection of hydroacoustic signals on a fiber-optic submarine cable. Scientific Reports, 2021, 11, doi: 10.1038/s41598-021-82093-8
Yanfang Qin , Gou Fujie , Shuichi Kodaira , Yasuyuki Nakamura, Yuka Kaiho, Tetsuo No, Koichiro Obana, Seiichi Miura. High-density seismic refraction imaging of plate-boundary structures in the slow earthquake gap zone off western Kii Peninsula, Nankai Trough. GEOPHYSICAL RESEARCH LETTERS, 2020, 48, 3, doi: 10.1029/2020GL089132
Ryuta Arai, Shuichi Kodaira, Stuart Henrys, Nathan Bangs, Koichiro Obana, Gou Fujie, Seiichi Miura, Daniel Barker, Dan Bassett, Rebecca Bell, Kimihiro Mochizuki, Richard Kellett, Valerie Stucker, Bill Fry, NZ3D Team. Three‐dimensional P‐wave velocity structure of the northern Hikurangi margin from the NZ3D experiment: Evidence for fault‐bound anisotropy. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2020, 125, 12, doi: 10.1029/2020JB020433
Jesse Hutchinson, Honn Kao, Michael Riedel, Koichiro Obana, Kelin Wang, Shuichi Kodaira, Tsutomu Takahashi, Yojiro Yamamoto. Significant geometric variation of the subducted plate beneath the northernmost Cascadia subduction zone and its tectonic implications as revealed by the 2014 MW 6.4 earthquake sequence. EARTH AND PLANETARY SCIENCE LETTERS, 2020, 551, doi: 10.1016/j.epsl.2020.116569
Toshitaka Baba, Naotaka Chikasada, Yasuyuki Nakamura, Gou Fujie, Koichiro Obana, Seiichi Miura, and Shuichi Kodaira. Deep Investigations of Outer‐Rise Tsunami Characteristics Using Well‐Mapped Normal Faults Along the Japan Trench. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2020, 125, doi: 10.1029/2020JB020060
Yasuyuki Nakamura, Toshiya Fujiwara, Shuichi Kodaira, Seiichi Miura & Koichiro Obana. Correlation of frontal prism structures and slope failures near the trench axis with shallow megathrust slip at the Japan Trench. Scientific Reports, 2020, 10, doi: 10.1038/s41598-020-68449-6
Yojiro Yamamoto, Tsutomu Takahashi, Yasushi Ishihara, Koichiro Obana, Seiichi Miura, Shuichi Kodaira, Yoshiyuki Kaneda. Plate geometry model and seismicity in the northern Ryukyu subduction zone, Japan, deduced from amphibious seismic observations. EARTH AND PLANETARY SCIENCE LETTERS, 2020, 536, doi: 10.1016/j.epsl.2020.116143
Aki Ito, Takashi Tonegawa, Naoki Uchida, Yojiro Yamamoto, Daisuke Suetsugu, Ryota Hino, Hiroko Sugioka, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara. Configuration and structure of the Philippine Sea Plate off Boso, Japan: constraints on the shallow subduction kinematics, seismicity, and slow slip events. EARTH PLANETS AND SPACE, 2019, 71, 111, doi: 10.1186/s40623-019-1090-y
Jesse Hutchinson ; Honn Kao ; George Spence ; Koichiro Obana ; Kelin Wang ; Shuichi Kodaira. Seismic Characteristics of the Nootka Fault Zone: Results from the Seafloor Earthquake Array Japan–Canada Cascadia Experiment (SeaJade). BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2019, 109, 6, p. 2252-2276, doi: 10.1785/0120190008
Koichiro Obana,Gou Fujie,Tsutomu Takahashi,Yojiro Yamamoto,Takashi Tonegawa,Seiichi Miura,Shuichi Kodaira. Seismic velocity structure and its implications for oceanic mantle hydration in the trench-outer rise of the Japan Trench. GEOPHYSICAL JOURNAL INTERNATIONAL, 2019, 217, 3, p. 1629-1642, doi: 10.1093/gji/ggz099
Ayako Nakanishi, Narumi Takahashi, Yojiro Yamamoto, Tsutomu Takahashi, Seckin Ozgur Citak, Takeshi Nakamura, Koichiro Obana, Shuichi Kodaira and Yoshiyuki Kaneda. Three-dimensional plate geometry and P-wave velocity models of the subduction zone in SW Japan: Implications for seismogenesis. Geological Society of America Special Paper, 2018, 534, p. 1-18, doi: 10.1130/2018.2534(04)
Takashi Tonegawa, Koichiro Obana, Gou Fujie and Shuichi Kodaira. Lateral variation of the uppermost oceanic plate in the outer-rise region of the Northwest Pacific Ocean inferred from Po-to-s converted waves. EARTH PLANETS AND SPACE, 2018, 70, doi: 10.1186/s40623-018-0880-y
Masayuki Kano, Naofumi Aso, Takanori Matsuzawa, Satoshi Ide, Satoshi Annoura, Ryuta Arai, Satoru Baba, Michael Bostock, Kevin Chao, Kosuke Heki, Satoshi Itaba, Yoshihiro Ito, Noriko Kamaya, Takuto Maeda, Julie Maury, Mamoru Nakamura, Takuya Nishimura, Koichiro Obana, Kazuaki Ohta, Natalia Poiata, Baptiste Rousset, Hiroko Sugioka, Ryota Takagi, Tsutomu Takahashi, Akiko Takeo, Yoko Tu, Naoki Uchida, Yusuke Yamashita, Kazushige Obara. Development of a Slow Earthquake Database. SEISMOLOGICAL RESEARCH LETTERS, 2018, 89, 4, p. 1566-1575, doi: 10.1785/0220180021
Koichiro Obana, Yasuyuki Nakamura, Gou Fujie, Shuichi Kodaira, Yuka Kaiho, Yojiro Yamamoto, Seiichi Miura. Seismicity in the source areas of the 1896 and 1933 Sanriku earthquakes and implications for large near-trench earthquake faults. GEOPHYSICAL JOURNAL INTERNATIONAL, 2018, 212, 3, p. 2061-2072, doi: 10.1093/gji/ggx532
Yojiro Yamamoto, Tsutomu Takahashi, Yasushi Ishihara, Yuka Kaiho, Ryuta Arai, Koichiro Obana, Ayako Nakanishi, Seiichi Miura, Shuichi Kodaira, Yoshiyuki Kaneda. Modeling the Geometry of Plate Boundary and Seismic Structure in the Southern Ryukyu Trench Subduction Zone, Japan, Using Amphibious Seismic Observations. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2018, 123, doi: 10.1002/2017JB015330
Shuichi Kodaira, Yasuyuki Nakamura, Yojiro Yamamoto, Koichiro Obana, Gou Fujie, Tetsuo No, Yuka Kaiho, Takeshi Sato, Seiichi Miura. Depth-varying structural characters in the rupture zone of the 2011 Tohoku-oki earthquake. Geosphere, 2017, doi: https://doi.org/10.1130/GES01489.1
Aki Ito, Yojiro Yamamoto, Ryota Hino, Daisuke Suetsugu, Hiroko Sugioka, Masaru Nakano, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara. Tomographic image of crust and upper mantle off the Boso Peninsula using data from an ocean bottom seismograph array. EARTH PLANETS AND SPACE, 2017, 69, 118, doi: 10.1186/s40623-017-0703-6
尾鼻浩一郎・藤江剛. アウターライズ地震学－海溝海側太平洋プレートの地殻構造と地震活動－. 地学雑誌, 2017, 126, 2, p. 113-123, doi: 10.5026/jgeography.126.113
森下知晃、藤江剛、山野誠、中西正男、尾鼻浩一郎、中村恭之、斎藤実篤、小平秀一、木村純一、黒田潤一郎、小野重明. 古い海洋プレートのみ込み直前での屈曲断層形成に伴う加水作用解明に向けた海洋掘削計画概要. 地学雑誌, 2017, 126, 2, p. 247-262, doi: doi:10.5026/jgeography.126.247
Yojiro Yamamoto, Tsutomu Takahashi, Yuka Kaiho, Koichiro Obana, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. Seismic structure off the Kii Peninsula, Japan, deduced from passive- and active-source seismographic data. Earth and Planetary Science Letters, 2017, 461, p. 163-175, doi: 10.1016/j.epsl.2017.01.003
Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano, Yojiro Yamamoto. Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations. Earth, Planets Space, 2017
Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano & Yojiro Yamamoto. Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations. EARTH PLANETS AND SPACE, 2017, 69, 1, doi: 10.1186/s40623-017-0608-4
Takashi Tonegawa, Koichiro Obana, Yojiro Yamamoto, Shuichi Kodaira, Kelin Wang, Michael Riedel, Honn Kao, and George Spence. Fracture Alignments in Marine Sediments Off Vancouver Island from Ps Splitting Analysis. Bulletin of the Seismological Society of America, 2016, 107, 1, doi: 10.1785/0120160090
Takahashi Tsutomu, Obana Koichiro, Kodaira Shuichi,. S-wave attenuation structure beneath the northern Izu-Bonin arc. Earth, Planets and Space, 2016, 68, 1, p. 1-13, doi: 10.1186/s40623-016-0431-3
Akiko To, Koichiro Obana, Hiroko Sugioka, Eiichiro Araki, Narumi Takahashi, Yoshio Fukao. Small size very low frequency earthquakes in the Nankai accretionary prism, following the 2011 Tohoku-Oki earthquake. Physics of the Earth and Planetary Interiors, 2015, 245, p. 40-51
Takashi Tonegawa, Yoshio Fukao, Tsutomu Takahashi, Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Ambient seafloor noise excited by earthquakes in the Nankai subduction zone. Nature Communications, 2015, doi: 10.1038/ncomms7132
Koichiro Obana, Martin Scherwath, Yojiro Yamamoto, Shuichi Kodaira, Kelin Wang, George Spence, Michael Riedel, Honn Kao. Earthquake activity in northern Cascadia subduction zone off Vancouver Island revealed by ocean bottom seismograph observations. Bulletin of the Seismological Society of America, 2014, 105, 1, p. 489-495, doi: 10.1785/0120140095
Tsutomu Takahashi, Koichiro Obana, Yojiro Yamamoto, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. S-wave attenuation structure on the western side of the Nankai subduction zone: implications for fluid distribution and dynamics. Journal of Geophysical Research: Solid Earth, 2014, 119, p. 7805-7822, doi: 10.1002/2014JB011103
浅川賢一、前田洋作、尾鼻浩一郎、渡邊佳孝、寺田育正、吉田政生、大久保直幸、福地鐡雄. セラミックス耐圧球を用いた超深海型自己浮上式海底地震計の開発. 海洋調査技術, 2014, 26, 2, p. 19-29, doi: 10.11306/jsmst.26.2_p19
Yojiro Yamamoto, Koichiro Obana, Tsutomu Takahashi, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. Seismicity and structural heterogeneities around the western Nankai Trough subduction zone, southwestern Japan. Earth and Planetary Science Letters, 2014, 396, p. 34-45, doi: 10.1016/j.epsl.2014.04.006
Koichiro Obana, Shuichi Kodaira, Yasuyuki Nakamura, Takeshi Sato, Gou Fujie, Tsutomu Takahashi, Yojiro Yamamoto. Aftershocks of the December 7, 2012 intraplate doublet near the Japan Trench axis. Earth, Planets and Space, 2014, 66, p. 24, doi: 10.1186/1880-5981-66-24
Koichiro Obana, Tsutomu Takahashi, Tetsuo No, Yuka Kaiho, Shuichi Kodaira, Mikiya Yamashita, Takeshi Sato and Takeshi Nakamura. Distribution and migration of aftershocks of the 2010 Mw 7.4 Ogasawara Islands intraplate normal-faulting earthquake related to a fracture zone in the Pacific plates. Geochem. Geophys. Geosyst., 2014, 15, 4, p. 1363-1373, doi: 10.1002/2014GC005246
Yojiro Yamamoto, Koichiro Obana, Shuichi Kodaira, Ryota Hino, Masanao Shinohara. Structural heterogeneities around the megathrust zone of the 2011 Tohoku earthquake from tomographic inversion of onshore and offshore seismic observations. Journal of Geophysical Research, 2014, 119, doi: 10.1002/2013JB010582
Obana K., S. Kodaira, M. Shinohara, R. Hino, K. Uehira, H. Shiobara, K. Nakahigashi, T. Yamada, H. Sugioka, A. Ito, Y. Nakamura, S. Miura, Tetsuo No, N. Takahashi,. Aftershocks near the updip end of the 2011 Tohoku-Oki earthquake. Earth and Planetary Science Letters, 2013, 382, p. 111-116, doi: 10.1016/j.epsl.2013.09.007
Tsutomu Takahashi, Koichiro Obana, Yojiro Yamamoto, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. The 3-D distribution of random velocity inhomogeneities in southwestern Japan and the western part of the Nankai subduction zone. Journal of Geophysical Research: Solid Earth, 2013, 118, p. 2246-2257, doi: 10.1002/jgrb.50200
Yojiro Yamamoto, Koichiro Obana, Tsutomu Takahashi, Ayako Nakanishi, Shuichi Kodaira, Yoshiyuki Kaneda. Imaging of the subducted Kyushu-Palau Ridge in the Hyuga-nada region, western Nankai Trough subduction zone. Tectonophysics, 2013, 589, p. 90-102, doi: 10.1016/j.tecto/2012.12.028
Precise aftershock distribution of the 2011 off the Pacific coast of Tohoku earthquake revealed by ocean bottom seismometer networks. Earth Planets Space, 2013, 64, 12, p. 1137-1148, doi: 10.5047/eps.2012.09.003
Kazuo Nakahigashi Masanao Shinohara , Eiji Kurashimo , Tomoaki Yamadaa, Aitaro Kato , Tetsuo Takanami , Kenji Uehira , Yoshihiro Ito , Takashi Iidaka , Toshihiro Igarashi , Hiroshi Sato , Ryota Hino , Koichiro Obana , Yoshiyuki Kaneda , Naoshi Hirata , Takaya Iwasaki , Toshihiko Kanazawa. Seismic structure of the source region of the 2007 Chuetsu-oki earthquake revealed by offshore-onshore seismic survey: Asperity zone of intraplate earthquake delimited by crustal inhomogeneity. Tectonophysics, 2012, 562-563, p. 34-47, doi: 10.1016/j.tecto.2012.06.052
Hiroko Sugioka, Taro Okamoto , Takeshi Nakamura , Yasushi Ishihara , Aki Ito , Koichiro Obana , Masa Kinoshita , Kazuo Nakahigashi , Masanao Shinohara, Yoshio Fukao. Tsunamigenic potential of the shallow subduction plate boundary inferred from slow seismic slip. Nature Geoscience, 2012, 5, 6, p. 414-418, doi: 10.1038/ngeo1466
Shohei Minata, Takeshi Tsuji, Toshifumi Matsuoka, and Koichiro Obana. Crosscorrelation of Earthquake Data Using Stationary Phase Evaluation: Insight into Reflection Structures of Oceanic Crust Surface in the Nankai Trough. International Journal of Geophysics, 2012, 2012, doi: 10.1155/2012/101545
Koichiro Obana, Gou Fujie, Tsutomu Takahashi, Yojiro Yamamoto, Yasuyuki Nakamura, Shuichi Kodaira, Narumi Takahashi, Yoshiyuki Kaneda, Masanao Shinohara. Normal-faulting earthquakes beneath the outer slope of the Japan Trench after the 2011 Tohoku earthquake: Implications for the stress regime in the incoming Pacific plate. Geophysical Research Letters, 2012, 39, doi: 10.1029/2011GL050399
Scherwath Martin, Spence George , Obana Koichiro , Kodaira Shuichi , Wang Kelin , Riedel Michael , McGuire Jeff, Collins John. Seafloor Seismometers Monitor Northern Cascadia Earthquakes. Eos Trans. AGU, 2011, 92, 47, p. 421-422, doi: 10.1029/2011EO470001
Masanao Shinohara, Tomoaki Yamada, Kazuo Nakahigashi, Shin'ichi Sakai, Kimihiro Mochizuki, Kenji Uehira, Yoshihiro Ito, Ryusuke Azuma, Yuka Kaiho, Tetsuo No, Hajime Shiobara, Ryota Hino, Yoshio Murai, Hiroshi Yakiwara, Toshinori Sato, Yuya Machida, Takashi Shinbo, Takehi Isse, Hiroki Miyamachi, Koichiro Obana, Narumi Takahashi, Shuichi Kodaira, Yoshiyuki Kaneda, Kenji Hirata, Sumio Yoshikawa, Kazushige Obara, Takaya Iwasaki, Naoshi Hirata. Aftershock observation of the 2011 off the Pacific coast of Tohoku Earthquake by using ocean bottom seismometer network. Earth Planets Space, 2011, 63, p. 835-840, doi: doi:10.5047/eps.2011.05.020
Tsutomu Takahashi, Koichiro Obana, Shuichi Kodaira, Daisuke Suetsugu, Narumi Takahashi, Shin'ichiro Kamiya, Yoshihiko Tamura. Random inhomogeneities in the northern Izu-Bonin arc estimated by tomographic inversion of peak delay times of S-wave seismograms. J. Geophys. Res., 2011, 116, doi: , doi:10.1029/2010JB007691
Koichiro Obana, Shin'ichiro Kamiya, Shuichi Kodaira, Daisuke Suetsugu, Narumi Takahashi, Tsutomu Takahashi, Yoshihiko Tamura. Along-arc variation in seismic velocity structure related to variable growth of arc crust in northern Izu-Bonin intraoceanic arc. Geochem. Geophys. Geosyst., 2010, 11, p. Q08012,, doi: 10.1029/2010GC003146
Tetsuo No, Narumi Takahashi, Shuichi Kodaira, Koichiro Obana, Yoshiyuki Kanada. Characteristics of deformation structure around the 2007 Niigata-ken Chuetsu-oki Earthquake. Earth, Planets and Space, 2009, 61, p. 1111-1115
Koichiro Obana, Shuichi Kodaira. Low-frequency tremors associated with reverse faults in a shallow accretionary prism. Earth Planet. Sci. Lett., 2009, 287, p. 168-174
Ayako Nakanishi, Eiji Kurashimo, Yoshiyuki Tatsumi, Haruka Yamaguchi, Seiichi Miura, Shuichi Kodaira, Koichiro Obana, Narumi Takahashi, Tetsuro Tsuru, Yoshiyuki Kaneda, Takaya Iwasaki, Naoshi Hirata. Crustal evolution of the southwestern Kuril Arc, Hokkaido Japan, deduced from seismic velocity and geochemical structure. Tectonophysics, 2009, 472, p. 105-123
Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Seismicity at the Eastern End of the 1944 Tonankai Earthquake Rupture Area. Bulletin of the Seismological Society of America, 2009, 99, 1, p. 110-122, doi: 10.1785/0120070236
Masanao Shinohara, Toshihiko Kanazawa, Tomoaki Yamada, Kazuo Nakahigashi, Shin'ichi Sakai, Ryota Hino, Yoshio Murai, Akira Yamazaki, Koichiro Obana, Yoshihiro Ito, Kazuhiro Iwakiri, Ryo Miura, Yuya Machida, Kimihiro Mochizuki, Kenji Uehira, Michitaka Tahara, Asako Kuwano, Shin'ichiro Amamiya, Shuichi Kodaira, Tetsuo Takanami, Yoshiyuki Kaneda, Takaya Iwasaki. Precise aftershock distribution of the 2007 Chuetsu-oki Earthquake obtained by using an ocean bottom seismometer network. Earth Planets Space, 2008, 60, p. 1121-1126
Masaki Nakamura, Yasuhiro Yoshida, Dapeng Zhao, Hiroyuki Takayama, Koichiro Obana, Hiroshi Katao, Junzo Kasahara, Toshihiko Kanazawa, Shuichi Kodaira, Toshinori Sato, Hajime Shiobara, Masanao Shinohara, Hideki Shimamura, Narumi Takahashi, Ayako Nakanishi, Ryota Hino, Yoshio Murai, Kimihiro Mochizuki. Three-dimensional P- and S-wave Velocity Structure beneath Japan. Phys. Earth Planet. Inter., 2008, 168, 1-2, p. 49-70
Eiichiro Araki, Masanao Shinohara, Koichiro Obana, Tomoaki Yamada, Yoshiyuki Kaneda, Toshihiko Kanazawa, Kiyoshi Suyehiro. Aftershock distribution of the 26 December 2004 Sumatra-Andaman earthquake from ocean bottom seismographic observation. Earth Planets Space, 2006, 58, 12, p. 113-119
Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Seismicity related to heterogeneous structure along the western Nankai trough off Shikoku Island. Geophys. Res. Lett., 2006, 33, L23310, doi: 10.1029/2006GL028179
金田義行,朴進午,尾鼻浩一郎,木下正高,堀高峰,小平秀一,金沢敏彦,篠原雅尚,酒井慎一,山田知朗. 2004年紀伊半島南東沖地震震源域の地殻構造と余震分布について. 地震, 2006, 58, 4
S. Sakai, T. Yamada, M. Shinohara, H. Hagiwara, Toshihiko Kanazawa, Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Urgent aftershock observation of the 2004 off the Kii Peninsula earthquake using ocean bottom seismometers. Earth Planets Space, 2005, 57, p. 363-368
Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Seismicity in the incoming/subducting Philippine Sea plate off the Kii Peninsula, central Nankai trough. J. Geophys. Res., 2005, 110, 11, doi: 10.1029/2004JB003487
T. Iinuma, M. Protti, Koichiro Obana, V. Gonzarez, R.V. del LaaT, T. Kato, S. Miyazaki, Yoshiyuki Kaneda, E. Hernandez. Inter-plate coupling in the Nicoya Peninsula, Costa Rica, as deduced from a trans-peninsula GPS experiment. Earth Planet. Sci. Lett., 2004, 223, p. 203-212
Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda. Microseismicity around rupture area of the 1944 Tonankai earthquake from ocean bottom seismograph observations. Earth Planet. Sci. Lett., 2004, 222, 2, p. 561-572
Ayako Nakanishi, Alex Jason Smith, Seiichi Miura, Tetsuro Tsuru, Shuichi Kodaira, Kouichiro Obana, Narumi Takahashi, Phil R Cummins, Yoshiyuki Kaneda. Structural factors controlling the oceanic rupture zone of the 1973 Nemuro-oki earthquake, the suthern Kuril Trench seismogenic zone. J. Geophys. Res., 2004, 109, doi: 10.1029/2003JB002574
Koichiro Obana, Shuichi Kodaira, Yoshiyuki Kaneda, Kimihiro Mochizuki, Masanao Shinohara, Kiyoshi Suyehiro. Microseismicity at the seaward updip limit of the western Nankai Trough seismogenic zone. J. Geophys. Res., 2003, 108, 10, doi: 10.1029/2002JB002370
K. Mochizuki, Koichiro Obana. Seismic activities along the Nankai trough. Bull. Earthq. Res. Inst, 2003, 78, p. 185-195
K. Obana, S. Kodaira, K. Mochizuki, M. Shinohara. Micro-seismicity around the seaward updip limit of the 1946 Nankai earthquake dislocation area. Geophys. Res. Lett., 2001, 28, 12, p. 2333-2336, doi: 10.1029/2000GL012794
尾鼻浩一郎,片尾浩、安藤雅孝. Seafloor Positioning System with GPS-acoustic Link for Crustal Dynamics Observation -a preliminary result from experiments in the sea-. Earth, Planets and Space Earth, Planets and Space, 52, 415-423, 2000
Koichiro Obana, H. Katao, M. Ando. Seafloor positioning with global positioning system-acoustic link system. The Island Arc,, 1999, 8, 2, p. 245-258