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J-GLOBAL ID：202401017551861770 Update date: Mar. 25, 2025

Obana Koichiro

Research theme for competitive and other funds (4)：

2024 - 2028 Mechanism of large tsunamigenic fault slip without stress drop during the 2011 Tohoku-oki earthquake
2022 - 2027 「速いスロー地震」から探る、カスカディア巨大地震震源域におけるプレート固着の実態
2020 - 2024 千島海溝沖アウターライズ津波即時予測に向けた震源断層マッピングと津波評価
2016 - 2019 Input into subduction zone: Structure heterogeneity of incoming Pacific plate investigated through the OBS data

Papers (72)：

Koichiro Obana, Aki Ito, Toshiya Fujiwara, Masayuki Obayashi, Kentaro Imai, Yasuyuki Nakamura, Kenta Yoshida, Noriko Tada, Tomoya Nakajima, Hiroyuki Matsumoto, et al. Earthquake activity in the Torishima Rift and Sofu Seamount, and its relationship to the October 2023 tsunamis in Japan. 2025
Toshitaka Baba, Tetsuo No, Koichiro Obana, Kentaro Imai, Naotaka Chikasada, Yuichiro Tanioka, Shuichi Kodaira. Authentic fault models and dispersive tsunami simulations for outer-rise normal earthquakes in the southern Kuril Trench. Earth, Planets and Space. 2024. 76. 1
Tetsuo No, Shuichi Kodaira, Kentaro Imai, Koichiro Obana, Gou Fujie, Yasuyuki Nakamura, Kazuya Shiraishi, Ryo Miura, Masao Nakanishi. Mapping normal faults on the outer slope of the western Kuril Trench based on recent seismic reflection and bathymetric data. Earth, Planets and Space. 2024. 76. 1
Toshiya Fujiwara, Kentaro Imai, Masayuki Obayashi, Kenta Yoshida, Noriko Tada, Koichiro Obana, Gou Fujie, Shigeaki Ono, Shuichi Kodaira. The Sofu Seamount Submarine Volcano Present in the Source Area of the October 2023 Earthquakes and Tsunamis in Japan. Geophysical Research Letters. 2024
Gou Fujie, Shuichi Kodaira, Koichiro Obana, Yojiro Yamamoto, Takehi 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. 1

MISC (3)：

野徹雄, 藤江剛, 中村恭之, 高橋努, 尾鼻浩一郎, 石山達也, 赤間健一. Deep marine seismic survey across the eastern edge of hypocentral region of the 2024 Noto Peninsula earthquake. 物理探査学会学術講演会講演論文集. 2024. 151st
藤江剛, 野徹雄, 高橋努, 中村恭之, 尾鼻浩一郎, 三浦誠一. 能登半島沖における海域断層等の調査. 海洋調査技術学会研究成果発表会講演要旨集. 2024. 36th
篠原雅尚, 日野亮太, 高橋努, 尾鼻浩一郎, 小平秀一, 東龍介, 山田知朗, 悪原岳, 山下裕亮, 蔵下英司, et al. 2024年能登半島地震震源域における緊急海底地震観測. 海洋調査技術学会研究成果発表会講演要旨集. 2024. 36th

Lectures and oral presentations (13)：

Precise aftershock activity by rapid response seafloor observation in the eastern source region of the 2024 Noto-Hanto earthquake using ocean bottom seismometers
(AGU24 2024)
Ocean bottom pressure gauge array observation for detecting slow earthquakes with a wide frequency range at Southwestern off the Vancouver Island
(AGU24 2024)
The Sofu Seamount Submarine Volcano Present in the Source Area of the October 2023 Earthquakes and Tsunamis in Japan
(AGU24 2024)
緊急海底地震観測による令和6年能登半島地震東部震源域における精密余震活動
(日本地震学会2024年度秋季大会 2024)
南海トラフ域C0010での分岐断層からの定常的な反射S波の抽出
(日本地震学会2024年度秋季大会 2024)

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