[S-SS11] Active faults and paleoseismology

Sun. May 26, 2024 10:45 AM - 12:00 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

convener:Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Yoshiki Sato(Advanced Industrial Science and Technology, Geological Survey of Japan), Suguru Yabe(National Institute of Advanced Industrial Science and Technology), Ken-ichi Yasue(University of Toyama), Chairperson:Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Suguru Yabe(National Institute of Advanced Industrial Science and Technology)

Geologic and historic information on seismic cycles and on the magnitude and source faults of past earthquakes is essential information to understand future large earthquakes. The study of past faulting and seismicity is an important issue for an interdisciplinary community of seismologists, geologists, geomorphologists, archaeologists, and historians.

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10:45 AM - 11:00 AM

[SSS11-06] Directionally dependent horizontal-to-vertical spectral ratios of microtremors across Active Faults in Ogasawara Iwo-To Island

*Takumi Murakoshi¹, Rina Izumi¹, Ryota Misawa¹ (1.National Defense Academy)

11:00 AM - 11:15 AM

[SSS11-07] Seismic hazard risk of Miyanohara fault estimated by micro tremor observation

*Mamoru Koarai¹, Nobuyuki Nakajima², Shigeki Senna³, Takashi Azuma⁴, Kazuki Yoshida⁵, Takayuki Nakano⁵ (1.Earth Science course, College of Science, Ibaraki University, 2.gradueted student, Earth Science course, Ibaraki University, 3.NIED, 4.AIST, 5.GSI)

11:15 AM - 11:30 AM

[SSS11-08] Fault outcrops and geological fault offset around a lineament reported in Hamada City, Shimane Prefecture

*Kotaro Nobukawa^1,2, Hideki Mukoyoshi² (1.Graduate School, Nagoya University, 2.Shimane University)

11:30 AM - 11:45 AM

[SSS11-09] Offshore active fault survey of the Ogori fault, off the coast of Ube city, Yamaguchi prefecture, western Japan

*Takashi OGAMI¹, Tomoyuki SATO¹, Kosuke OTA¹, Karin NEMOTO^1,2, Sabrina LLOYD^1,2, Yuka YOKOYAMA³, Seishiro FURUYAMA⁴, Nobukatsu TAKEDA⁵, Kyohei TAKAHASHI⁵, Takashi SATO⁵, Takashi HOSOYA⁶, Chiharu NAKASE⁶, Tadashi MARUYAMA¹, Yukari MIYASHITA¹, Osamu FUJIWARA¹ (1.Geological Survey of Japan, AIST, 2.Atmosphere and Ocean Research Institute, the University of Tokyo, 3.Tokai Univeristy, 4.Tokyo Univerisity of Marine Science and Technology, 5.Sogo Geophysical Exploration Co., Ltd, 6.Chuo Kaihatsu Corporation)

11:45 AM - 12:00 PM

[SSS11-10] Verifying variability and duplicability of near-surface fault deformation: re-excavation of pre-earthquake paleoseismic trenches, Futagawa fault, Central Kyushu, Japan

*Yamane Yuki¹, Shinji Toda², Masayuki Torii³, Yuki Hara², Daisuke Ishimura⁴, Naoya Takahashi¹, Mitsuru Okuno⁵, Yasuhide Fukuda⁶ (1.Graduate School of Science, Department of Earth Science, Tohoku University, 2.International Research Institute of Disaster Science, Tohoku University, 3.Center for Water Cycle, Marine Environment and Disaster Management, Kumamoto University, 4.Department of Geography, Tokyo Metropolitan University, 5.Graduate School of Science, Department of Geosciences, Osaka Metropolitan University, 6.Sanwa Geological Engineering Co., Ltd.)

Session information