Room D

[S23]AM-2

Fri. Oct 30, 2020 10:30 AM - 11:45 AM ROOM D

chairperson:Katsuhiko Shiomi(NIED)

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10:30 AM - 10:45 AM

[S23-01] Seismological evidence for a seamount subduction in eastern Shikoku

〇Katsuhiko SHIOMI¹ (1.National Research Institute for Earth Science and Disaster Resilience)

10:45 AM - 11:00 AM

[S23-02] Detection of deep low-frequency earthquakes in the Nankai subduction zone over 11 years using a matched filter technique

〇Aitaro Kato¹, Shigeki Nakagawa¹ (1.Earthquake Research Institute, the University of Tokyo)

11:00 AM - 11:30 AM

[S23-03] [Invited] Crustal activity monitoring using ocean networks for earthquakes and tsunamis

〇Narumi Takahashi¹, Takane Hori² (1.National Research Institute for Earth Science and Disaster Resilience, 2.Japan Agency for Marine Earth Science and Technology)

11:30 AM - 11:45 AM

[S23-04] Ambient noise tomography in the forearc region off northeast Japan using S-net

〇Ryota Takagi¹, Kiwamu Nishida² (1.Graduate School of Science, Tohoku University, 2.Earthquake Research Institute, The University of Tokyo)

Room D

[S23]PM-1

Fri. Oct 30, 2020 1:00 PM - 2:15 PM ROOM D

chairperson:Ryota Takagi(Graduate School of Science, Tohoku University)

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1:00 PM - 1:30 PM

[S23-05] [Invited] Dense seismic observation using seafloor optical fiber cable system off Sanriku by Distributed Acoustic Sensing

〇Masanao Shinohara¹, Tomoaki Yamada¹, Takeshi Akuhara¹, Kimihiro Mochizuki¹, Shin'ichi Sakai¹ (1.Earthquake Research Institute, The University of Tokyo)

1:30 PM - 1:45 PM

[S23-06] Estimation of Site Amplification of Azuma volcano: Analyses of Seismic Signals Recorded by Fiber Optic Cable and DAS

〇Takeshi Nishimura¹, Kentaro Emoto¹, Hisashi Nakahara¹, Satoshi Miura¹, Mare Yamamoto¹, Shunsuke Sugimura¹, Ayumu Ishikawa¹, Tsunehisa Kimura² (1.Graduate School of Science, Tohoku University, 2.Schlumberger)

1:45 PM - 2:00 PM

[S23-07] Analysis of dense records of the DAS observation using fiber optic cable in the urban area

〇Kentaro Emoto¹, Hisashi Nakahara¹, Takeshi Nishimura¹, Mare Yamamoto¹, Kodai Sagae¹, Gugi Ganefianto¹, Katsuhiro Yabu¹ (1.Graduate School of Science, Tohoku University)

2:00 PM - 2:15 PM

[S23-08] Characteristics of DAS data by Artificial Vibration

〇Masayuki Tanaka¹, Akio Kobayashi¹, Akio Katsumata¹, Koji Tamaribuchi¹, Tsunehisa Kimura², Shunsuke Kubota³, Yukihide Yoda⁴ (1.Meteorological Research Institute, 2.Schlumberger, 3.YK Giken Co., 4.NEC Corporation)

Room D

[S23]PM-2

Fri. Oct 30, 2020 2:30 PM - 3:30 PM ROOM D

chairperson:Aitaro Kato(Earthquake Research Institute, the University of Tokyo)

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2:30 PM - 2:45 PM

[S23-09] 3-D S-wave velocity structure derived by ambient noise tomography using dense short-period OBS arrey of off Ibaraki region

〇Lina Yamaya¹, Kimihiro Mochizuki¹, Takeshi Akuhara¹, Kiwamu Nishida¹, Tsuyoshi Ichimura¹, Kohei Fujita¹, Takuma Yamaguchi¹, Takane Hori² (1.ERI, Univ. of Tokyo, 2.JAMSTEC)

2:45 PM - 3:00 PM

[S23-10] High-density event locations with high-density OBS network at off-Ibaraki region

〇Shinji Yoneshima¹, Kimihiro Mochizuki¹ (1.Earthquake Research Institute, The University of Tokyo)

3:00 PM - 3:30 PM

[S23-11] [Invited] Dense seismic observation design for capturing background of large inland earthquakes (lessons from "0.1Manten" hyper dense seismic observation)

〇Satoshi Matsumoto¹ (1.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University)

Poster session (Oct. 30th)

S23P

Fri. Oct 30, 2020 4:00 PM - 5:30 PM ROOM P

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4:00 PM - 5:30 PM

[S23P-01] Verification of “Past” seismic intensity and estimation of “Future” ground motion by “Modern” seismic observation

〇MOTOKO ISHISE¹, Ryoichi Nakamura¹, Tomoya Harada, Shinichi Sakai² (1.ERI, Univ. of Tokyo, 2.III, Univ. of Tokyo)

4:00 PM - 5:30 PM

[S23P-02] Characteristics of seismic activity along the Japan Trench inferred from the automatically determined earthquake catalog with a dense ocean bottom seismometer network

〇Koji Tamaribuchi¹, Fuyuki Hirose¹ (1.Meteorological Research Institute)

4:00 PM - 5:30 PM

[S23P-03] Hypocenter determination using S-net data in the outer rise region of the Japan Trench

〇Azusa Nishizawa¹, Kenji Uehira¹, Masashi Mochizuki¹, Kazuhiko Goto², Koichiro Obana³ (1.NIED, 2.ADEP, 3.JAMSTEC)

4:00 PM - 5:30 PM

[S23P-04] Constraining seismic velocity structure of marine sediment using a dense array of ocean-bottom seismometers: results from Hyuga-nada

〇Takeshi Akuhara¹, Yusuke Yamashita², Shukei Ohyanagi², Yasunori Sawaki², Tomoaki Yamada³, Masanao Shinohara¹ (1.Univ. of Tokyo, 2.Kyoto Univ., 3.JMA)

4:00 PM - 5:30 PM

[S23P-05] Comparison between seismic velocity change and pore-fluid pressure in the Nankai Trough

〇Toshinori Kimura¹, Eiichiro Araki¹, Takashi Tonegawa¹ (1.Japan Agency for Marine-earth Science and Technology)

4:00 PM - 5:30 PM

[S23P-06] Introduction of boring cores recovered from seismeic obsevation wells drilled by NIED

〇Kentaro Omura¹ (1.National Research Institute for Earth Science and Disaster Resilience)

Sessions

Special session » S23. Frontier of observational seismology-Future of dense seismic observation

[S23]AM-2

[S23-01] Seismological evidence for a seamount subduction in eastern Shikoku

[S23-02] Detection of deep low-frequency earthquakes in the Nankai subduction zone over 11 years using a matched filter technique

[S23-03] [Invited] Crustal activity monitoring using ocean networks for earthquakes and tsunamis

[S23-04] Ambient noise tomography in the forearc region off northeast Japan using S-net

[S23]PM-1

[S23-05] [Invited] Dense seismic observation using seafloor optical fiber cable system off Sanriku by Distributed Acoustic Sensing

[S23-06] Estimation of Site Amplification of Azuma volcano: Analyses of Seismic Signals Recorded by Fiber Optic Cable and DAS

[S23-07] Analysis of dense records of the DAS observation using fiber optic cable in the urban area

[S23-08] Characteristics of DAS data by Artificial Vibration

[S23]PM-2

[S23-09] 3-D S-wave velocity structure derived by ambient noise tomography using dense short-period OBS arrey of off Ibaraki region

[S23-10] High-density event locations with high-density OBS network at off-Ibaraki region

[S23-11] [Invited] Dense seismic observation design for capturing background of large inland earthquakes (lessons from "0.1Manten" hyper dense seismic observation)

S23P

[S23P-01] Verification of “Past” seismic intensity and estimation of “Future” ground motion by “Modern” seismic observation

[S23P-02] Characteristics of seismic activity along the Japan Trench inferred from the automatically determined earthquake catalog with a dense ocean bottom seismometer network

[S23P-03] Hypocenter determination using S-net data in the outer rise region of the Japan Trench

[S23P-04] Constraining seismic velocity structure of marine sediment using a dense array of ocean-bottom seismometers: results from Hyuga-nada

[S23P-05] Comparison between seismic velocity change and pore-fluid pressure in the Nankai Trough

[S23P-06] Introduction of boring cores recovered from seismeic obsevation wells drilled by NIED

Authentication