Koichiro Obana

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Speaker, Author, Co-Author

Wed. May 28, 2025 3:30 PM - 5:00 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS12] Statistical seismology and underlying physical processes

3:45 PM - 4:00 PM

[SSS12-08] Non-Double-Couple Compoonents of the 2024 Noto Earthquake Aftershocks: Influence on Focal Mechanism Estimation

*Takeshi Akuhara¹, Masanao Shinohara¹, Tomoaki Yamada¹, Ryosuke Azuma², Ryota Hino², Koichiro Obana³, Tsutomu Takahashi³, Gou Fujie³, Shuichi Kodaira³, Yoshio Murai⁴, Hisatoshi Baba⁵, Hiroshi Yakiwara⁶, Yusuke Yamashita⁷ (1.Earthquake Research Institute, The University of Tokyo, 2.Tohoku University, 3.JAMSTEC, 4.Hokkaido University, 5.Tokai University, 6.Kagoshima University, 7.Kyoto University)

Wed. May 28, 2025 1:45 PM - 3:15 PM 104 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC36] Volcanoes in the sea

2:30 PM - 2:45 PM

[SVC36-04] Earthquake activity in the Torishima Rift and Sofu Seamount related to the October 2023 tsunamis observed in Japan

*Koichiro Obana¹, Aki Ito¹, Toshiya Fujiwara¹, Masayuki Obayashi¹, Kentaro Imai¹, Yasuyuki Nakamura¹, Kenta K. Yoshida¹, Noriko Tada¹, Tomoya Nakajima¹, Hiroyuki Matsumoto¹, Gou Fujie¹, Satoru Tanaka¹, Shigeaki Ono¹, Shuichi Kodaira² (1.Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, 2.Japan Agency for Marine-Earth Science and Technology)

Mon. May 26, 2025 10:45 AM - 12:15 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG46] Uncovering stress accumulation and fault strengthening of megathrust earthquakes

12:00 PM - 12:15 PM

[SCG46-12] Uncovering mechanism of massive shallow coseismic slip without significant stress drop in 2011

*Ryota Hino¹, Koichiro Obana², Takeshi Iinuma², Tatsuya Kubota³ (1.Graduate School of Science, Tohoku University, 2.JAMSTEC, 3.National Research Institute for Earth Science and Disaster Resilience)

Wed. May 28, 2025 10:45 AM - 12:15 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG55] Ocean Floor Geoscience

10:45 AM - 11:00 AM

[SCG55-18] Magnetic anomaly on the Sofu Seamount, Izu-Ogasawara (Bonin) Arc

*Toshiya Fujiwara¹, Noriko Tada¹, Kenta K. Yoshida¹, Aki Ito¹, Kentaro Imai¹, Masayuki Obayashi¹, Koichiro Obana¹, Gou Fujie¹, Shigeaki Ono¹, Shuichi Kodaira² (1.Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, 2.Japan Agency for Marine-Earth Science and Technology)

Wed. May 28, 2025 1:45 PM - 3:15 PM 103 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG61] Dynamics in mobile belts

1:45 PM - 2:00 PM

[SCG61-01] Crustal structure factors constraining hypocenter distribution in the eastern part of the 2024 Noto Peninsula earthquake, Japan Sea

*Tetsuo No¹, Gou Fujie¹, Yasuyuki Nakamura¹, Tsutomu Takahashi¹, Koichiro Obana¹, Tatsuya Ishiyama², Masaru Ichikawa³, Kenichi Akama³ (1.JAMSTEC, 2.ERI, Univ. of Tokyo, 3.JGI)