[S-SS03] Seismological advances in the ocean

2022年6月1日(水) 11:00 〜 13:00 オンラインポスターZoom会場 (21) (Ch.21)

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)、コンビーナ: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(鹿児島大学地震火山地域防災センター附属南西島弧地震火山観測所)、座長: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(鹿児島大学地震火山地域防災センター附属南西島弧地震火山観測所)

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 opened 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 and seismic velocity structure deduced from the seafloor observation, progresses in the development of seafloor instrumentation, processing and analyzing techniques on active and passive 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, and all relevant topics. We welcome presentations by early-career researchers and students who wish to try the presentation in an international session.

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11:00 〜 13:00

[SSS03-P01] Micro-seismicity in the northern part of the Nansei-Shoto subduction zone observed by ocean bottom seismic network

*仲谷幸浩¹、柳田浩嗣¹、八木原寛¹、平野舟一郎¹、山下裕亮²、松島健³、中東和夫⁴、篠原雅尚⁵ (1.鹿児島大学南西島弧地震火山観測所、2.京都大学防災研究所、3.九州大学地震火山観測研究センター、4.東京海洋大学、5.東京大学地震研究所)

11:00 〜 13:00

[SSS03-P02] Shallow tremor epicenter determination based on simulation results of high-frequency seismic wave propagation in a local three-dimensional velocity model

*武村俊介¹、奥脇亮²、矢部優³、江本賢太郎⁴ (1.東京大学地震研究所、2.筑波大学生命環境系山岳科学センター、3.産業技術総合研究所、4.東北大学大学院理学研究科)

11:00 〜 13:00

[SSS03-P03] Ocean bottom seismological observation at the boundary between slow earthquakes and ordinary earthquakes in Hyuga-nada, western part of Nankai Trough

*山下裕亮¹、大柳修慧²、佐脇泰典²、仲谷幸浩³、八木原寛³、伊藤喜宏¹、篠原雅尚⁴ (1.京都大学防災研究所、2.京都大学大学院理学研究科、3.鹿児島大学南西島弧地震火山観測所、4.東京大学地震研究所)

11:00 〜 13:00

[SSS03-P04] Seismological Property and Structure beneath the Seafloor at the Hyuga-nada, Estimated Using Ocean Bottom Seismographs

*佐脇泰典¹、山下裕亮²、大柳修慧¹、Emmanuel Soliman Garcia²、伊藤亜妃³、杉岡裕子⁴、高橋努³、篠原雅尚⁵、伊藤喜宏² (1.京都大学理学研究科、2.京都大学防災研究所、3.海洋研究開発機構、4.神戸大学理学研究科、5.東京大学地震研究所)

11:00 〜 13:00

[SSS03-P05] High-resolution seismic constraint on the seafloor sediments using the teleseismic body waves: towards deeper structure analysis using receiver functions

*金慧貞¹、川勝均¹、悪原岳¹、竹内希¹ (1.東京大学地震研究所)

11:00 〜 13:00

[SSS03-P06] Olivine Fabrics in the Oceanic Lithosphere Constrained by the Pn Azimuthal Anisotropy

*竹内希¹、一瀬建日¹、川勝均¹、塩原肇¹、杉岡裕子²、伊藤亜妃³、歌田久司¹ (1.東京大学地震研究所、2.神戸大学大学院理学研究科、3.海洋研究開発機構海域地震火山部門)

11:00 〜 13:00

[SSS03-P07] Retrieving S-wave velocity profile by EHVSR analysis in offshore Fukushima, NE Japan

*Atikul Haque Farazi^1,2、Yoshihiro Ito³、Agostiny Marrios Lontsi⁴、José Piña-Flores⁵、Francisco José Sánchez-Sesma⁵、Emmanuel Soliman M. Garcia³ (1.Division of Earth and Planetary Sciences, Kyoto University、2.Department of Geology and Mining, University of Barishal, Bangladesh、3.Disaster Prevention research Institute, Kyoto University、4.Swiss Seismological Service, ETH Zürich, Switzerland、5.Instituto de Ingeniería CU, Universidad Nacional Autónoma de México, 04510, Coyoacán, CDMX, Mexico)

11:00 〜 13:00

[SSS03-P08] 日本海溝―千島海溝会合部OBS観測網記録の地震波干渉法解析による地震波速度変化検出の試み

*佐藤豪大¹、東龍介¹、高木涼太¹、日野亮太¹、篠原雅尚² (1.東北大学、2.東京大学地震研究所)

11:00 〜 13:00

[SSS03-P09] Seismic structure revealed by reflection survey using distributed acoustic sensing applying to seafloor cable off Sanriku

高野洋輝¹、*篠原雅尚¹、仲田理映¹、蔵下英司¹、石山達也¹、加藤直子²、望月公廣¹ (1.東京大学地震研究所、2.日本大学文理学部)

11:00 〜 13:00

[SSS03-P10] 広帯域地震計センサーの傾斜とその特徴

*一瀬建日¹、塩原肇¹、川野由貴¹ (1.東京大学地震研究所)

セッション情報

[S-SS03] Seismological advances in the ocean

[SSS03-P01] Micro-seismicity in the northern part of the Nansei-Shoto subduction zone observed by ocean bottom seismic network

[SSS03-P02] Shallow tremor epicenter determination based on simulation results of high-frequency seismic wave propagation in a local three-dimensional velocity model

[SSS03-P03] Ocean bottom seismological observation at the boundary between slow earthquakes and ordinary earthquakes in Hyuga-nada, western part of Nankai Trough

[SSS03-P04] Seismological Property and Structure beneath the Seafloor at the Hyuga-nada, Estimated Using Ocean Bottom Seismographs

[SSS03-P05] High-resolution seismic constraint on the seafloor sediments using the teleseismic body waves: towards deeper structure analysis using receiver functions

[SSS03-P06] Olivine Fabrics in the Oceanic Lithosphere Constrained by the Pn Azimuthal Anisotropy

[SSS03-P07] Retrieving S-wave velocity profile by EHVSR analysis in offshore Fukushima, NE Japan

[SSS03-P08] 日本海溝―千島海溝会合部OBS観測網記録の地震波干渉法解析による地震波速度変化検出の試み

[SSS03-P09] Seismic structure revealed by reflection survey using distributed acoustic sensing applying to seafloor cable off Sanriku

[SSS03-P10] 広帯域地震計センサーの傾斜とその特徴

認証