日本地球惑星科学連合2023年大会

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[E] オンラインポスター発表

セッション記号 S (固体地球科学) » S-SS 地震学

[S-SS04] Seismological advances in the ocean

2023年5月23日(火) 10:45 〜 12:15 オンラインポスターZoom会場 (11) (オンラインポスター)

コンビーナ:久保田 達矢(国立研究開発法人防災科学技術研究所)、利根川 貴志(海洋研究開発機構　地震津波海域観測研究開発センター)、仲谷 幸浩(鹿児島大学大学院理工学研究科附属南西島弧地震火山観測所)

現地ポスター発表開催日時 (2023/5/22 17:15-18:45)

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 have enabled long-term monitoring for these targets, and deployments of dense temporary arrays or fiber optic technologies have open techniques for offshore seismic datasetsed up the possibility of higher-resolution researches. Also, such growths of 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 deduced from active and passive approaches, progresses in the development of seafloor instrumentation, processing and analyzing techniques for offshore seismic datasets, findings of the generation mechanisms of subseafloor earthquakes and 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. We welcome presentations by early-career researchers and students who wish to try the presentation in an international session.

10:45 〜 12:15

[SSS04-P03] Search for Diffusive Properties in Earthquake Late Coda Recorded by Ocean Bottom Seismometers (OBSs) at Off Fukushima: Implications for H/V Spectral Ratio

*Atikul Haque Farazi1,2、Yoshihiro Ito3、José Piña-Flores4、Emmanuel Soliman M GARCIA3、Shukei Ohyanagi1 (1.Division of Earth and Planetary Sciences, Kyoto University, Japan、2.Department of Geology and Mining, University of Barishal, Bangladesh、3.Disaster Prevention research Institute, Kyoto University, Japan、4.Facultad de Ingeniería, Universidad Nacional Autónoma de México, Mexico)


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