Japan Geoscience Union Meeting 2025

Session information

[E] Poster

S (Solid Earth Sciences ) » S-SS Seismology

[S-SS04] Seismological advances in the ocean

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

convener:Ayumu Mizutani(International Research Institute of Disaster Science, Tohoku University), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience)

Advances in ocean-bottom seismic observations with seismometers, hydrophones, and pressure gauges have provided us with the opportunity to study seismicity, subsurface structures, earthquake and tsunami generation, and wave phenomena in offshore areas. Permanent (cabled) observatories enable long-term monitoring for these targets, and deployments of dense temporary arrays or fiber optic technologies produce higher-resolution researches. Also, such developments in ocean seismology have invoked the community to create data processing and analyzing techniques. The purpose of this session is to share recent advances in the ocean seismology, such as seismicity, seismic velocity structure conducted from active and passive approaches, progresses in the development of seafloor instrumentation, processing and analyzing techniques for offshore seismic datasets, findings of submarine earthquakes, volcanic activities, and relevant tsunamis, observation of the seafloor strong motion, characterization of ambient noise and interpretation of its sources, propagation processes of various waves in the atmosphere, ocean, and solid Earth recorded by ocean instruments, and all relevant topics. This session welcomes offshore observations or analyses related to recent offshore major earthquakes, e.g., the Noto and Hyuga-nada in Japan and the Hualien in Taiwan. We recommend presentations by early-career researchers and students who would like to try the presentation in an international session.

5:15 PM - 7:15 PM

*Jun-Jie Ke1, Shu-Huei Hung1, Takehi Isse2, Hitoshi Kawakatsu2,3, Ban-Yuan Kuo3, Pei-Ying Patty Lin4, Hisashi Utada2, Nozomu Takeuchi2, Hajime Shiobara2, Hiroko Sugioka5, YoungHee Kim6, Sang-Mook Lee6, Ping-Yu Chang7,8,9, Yih Yang10, Daisuke Suetsugu5, Hiroko Sugioka5, Aki Ito11, Kazunori Yoshizawa12 (1.Department of Geosciences, National Taiwan University, Taipei, Taiwan, 2.Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, 3.Institute of EarthSciences, Academia Sinica, Taipei, Taiwan, 4.Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan, 5.Department of Planetology, Graduate School of Science, Kobe University, Kobe, Japan, 6.School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea, 7.Department of Earth Sciences, National Central University, Taoyuan, Taiwan, 8.Earthquake-Disaster, Risk Evaluation, and Management Centre, National Central University, Taoyuan, Taiwan, 9.Center for Astronautical Physics and Engineering (CAPE), National Central University, Taoyuan, Taiwan, 10.Taiwan Ocean Research Institute, National Applied Research Laboratories, Taiwan, 11.Japan Agency for Marine-Earth Science and Technology, Japan, 12.Department of Earth and Planetary Sciences, Hokkaido University, Japan)

5:15 PM - 7:15 PM

*ChingYu Hu1,2, Masanao Shinohara2, Yusuke Yamashita3, Takashi Tonegawa4, Tomoaki Yamada2, Takeshi Akuhara2, Kimihiro Mochizuki2 (1.Graduate School of Science, The University of Tokyo, 2.Earthquake Research Institute,The University of Tokyo, 3.Disaster Prevention Research Institute, Kyoto University, 4.Japan Agency for Marine-Earth Science and Technology)

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