The 2026 SSJ Fall Meeting
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Session Details

Room BRegular session : S09. Seismicity

[S09]Seismicity

Thu. Nov 5, 2026 9:15 AM - 10:45 AM JST
Thu. Nov 5, 2026 12:15 AM - 1:45 AM UTC
Room B (5F)
chairperson: Nana YOSHIMITSU (Kyoto University), Fuyuki HIROSE (Seismology and Tsunami Research Department, Meteorological Research Institute)
9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[S09-06]Seismic Activity of East off Sanriku Since November 2025, and Contents of Subsequent Earthquake Advisory

*Hiroshi UENO1, Shigeki AOKI1, Issei SUGANUMA1, Hiromitsu FUJII1, Watatu NAKAMURA1, Hirokazu SAKIHARA1, Yuhei YUASA1, Yasuhide HASEGAWA1, Kana AKIYAMA1, Taisuke HAMADA1, Kiyoshi TAKEDA1 (1. JMA/SVD)
9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[S09-07]Three-dimensional Vp and Vs structures and seismicity of the East Japan arc revealed by S-net data

*Motoya Suzuki1, Dapeng Zhao1, Genti Toyokuni1 (1. Department of Geophysics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan)
9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[S09-08]Hypocenter Relocation of the October 2023 Seismic Activity near Sofu Seamount Using Body-Wave Travel-Time Residuals

*Tetsuya Aoyama1, Nozomu Takeuchi1, Yosuke Aoki1 (1. Earthquake Research Institute)
10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[S09-09]Fluid migration and swarm evolution in active faults: Sendai swarm via microearthquake detection and relocation

*Haru Kato1, Keisuke Yoshida1, Makoto Naoi2 (1. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Tohoku University, 2. Hokkaido University)
10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[S09-10]Characteristics of seismic activity and stress drops in 1983 Fenton Hill microseismic events

*Nana YOSHIMITSU1, Michael Fehler2 (1. Kyoto University, 2. MIT)
10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[S09-11]Global Analysis of the b-Value of the Gutenberg–Richter Law and Stress-Related Parameters in Subduction Zones

*Kota Saito1, Satoshi Ide1 (1. The University of Tokyo)
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