[S22] 80 Years after the 1946 Showa Nankai Earthquake: Achievements and Challenges in Nankai Trough Earthquake Research | The 2026 SSJ Fall Meeting

Session Details

Room ASpecial session : S22. 80 Years after the 1946 Showa Nankai Earthquake: Achievements and Challenges in Nankai Trough Earthquake Research

[S22]80 Years after the 1946 Showa Nankai Earthquake: Achievements and Challenges in Nankai Trough Earthquake Research

Thu. Nov 5, 2026 9:15 AM - 10:45 AM JST
Thu. Nov 5, 2026 12:15 AM - 1:45 AM UTC

Room A (5F)

chairperson: Toshitaka BABA (Tokushima University), Yojiro YAMAMOTO (JAMSTEC)

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[S22-01][Invited]Slow earthquakes at shallower extension of megathrust zone in the Nankai Subduction zone

*Shunsuke TAKEMURA¹ (1. Earthquake Research Institute, the University of Tokyo)

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[S22-02]Spatio-temporal characterization of the very-low frequency earthquake activity off Muroto and Kii channel

*Yojiro YAMAMOTO¹, Kazuya Shiraishi¹, Takane Hori¹ (1. JAMSTEC)

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[S22-03]Hypocenter Location Using Submarine DAS in the Nankai Trough: P-S Converted Waves, Station Corrections, and 3D Models

*Akiko Toh¹, Satoru Baba², Ayako Nakanishi¹, Ryoichiro Agata¹, Masaru Nakano¹, Yojiro Yamamoto¹, Eiichiro Araki¹ (1. JAMSTEC, 2. Kyushu Univ.)

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[S22-04]Expansion of precise tilt observations using seafloor borehole tiltmeters

*Shuhei TSUJI¹, Shuhei Nishida¹, Yuya Machida¹, Takashi Yokobiki¹, Hiroyuki Matsumoto¹, Eiichiro Araki¹ (1. JAMSTEC)

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[S22-05]Development and Expansion of Seafloor Borehole Observations in the Nankai Trough: Achievements and Future Perspectives

*Yuya MACHIDA¹, Eiichiro Araki¹, Tomokazu Saruhashi¹, Masanori Kyo¹, Takashi Yokobiki¹, Hiroyuki Matsumoto¹, Shuhei Tsuji¹, Noriaki Sakurai¹, Takahiro Yokoyama¹ (1. Japan Agency for Marine-Earth Science and Technology)

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[S22-06]Multimode Ambient-Noise Tomography of the Slow-Earthquake Zone in Kumano-nada

*Takeshi AKUHARA¹, Hiroko Sugioka², Yusuke Yamashita³, Masanao Shinohara¹ (1. Earthquake Research Institute, The University of Tokyo, 2. Kobe University, 3. Miyazaki Municipal University)

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