Session Oral

G1-1．sub-Session 01

[1oral201-12] G1-1．sub-Session 01

Sun. Sep 4, 2022 9:00 AM - 12:00 PM oral room 1 (Build. 14, 501)

Chiar:Keishi Okazaki, Yoshihiro Nakamura, Nana Kamiya

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9:00 AM - 9:15 AM

[G1-O-1] Multiple Types of porosity – P-wave velocity relationships for The Nankai Trough

*Suguru YABE¹, Yohei HAMADA², Manami KITAMURA¹, Rina FUKUCHI³, Yoshitaka HASHIMOTO⁴ (1. Geological Survey of Japan, 2. JAMSTEC, 3. Naruto Univ. of Education, 4. Kochi Univ.)

9:15 AM - 9:30 AM

[G1-O-2] Temperature dependence of frictional properties of opal gouge and its implications for faulting along subduction-zone megathrusts

*Kyuichi Kanagawa¹, Tomoya Nakanishi², Junya Fujimori², Sayumi Sagano², Michiyo Sawai¹ (1. Research School of Science, Chiba University, 2. Graduate School of Science and Engineering, Chiba University)

9:30 AM - 9:45 AM

[G1-O-3] Thermal history, strain and deformation mechanism in a fossil seismogenic fault: the Yokonami melange, the Cretaceous Shimanto Belt

*Yoshitaka Hashimoto¹, Mako Kawaji¹, Jinpei Mitani¹, Taizo Uchida¹ (1. Kochi University)

9:45 AM - 10:00 AM

[G1-O-4] Fluid activity at the deeper part of plate boundary: An example from Median Tectonic Line in Ohshika district, Nagano, Japan

*Yoshihiro Nakamura¹, Kiran Sasidharan², Satish-Kumar Madhusoodhan² (1. Geological Survey of Japan, AIST, 2. Graduate School of Science and Technology, Niigata University)

10:00 AM - 10:15 AM

[G1-O-5] Geological constraints on dynamic changes of fluid pressure in seismic cycles

*Takahiro Hosokawa¹, Yoshitaka Hashimoto¹ (1. Kochi University)

10:15 AM - 10:30 AM

[G1-O-6] Identification of thermal events along a seismogenic fault using paleomagnetic analyses in the Yokonami mélange, the Cretaceous Shimanto Belt, Southwest Japan

*Taizo Uchida¹, Yoshitaka Hashimoto¹ (1. Kochi Univ.)

Cancelled

10:30 AM - 10:45 AM

[G1-O-7] Consolidation tests for low-porosity siltstone in Miyazaki forearc basin, SW Japan

*Takeru Yoshimoto¹, Yudai Suzuki², Feng ZHANG², Shun Chiyonobu³, Yasutomo Omori⁴, Yuzuru Yamamoto¹ (1. Kobe university, 2. Nagoya institute of technology, 3. Akita university, 4. JAMSTEC)

10:45 AM - 11:00 AM

[G1-O-8] Active fault outcrops and activity of the Shimojyo-sanroku fault, southern Nagano Prefecture, Southwest Japan

*Masao KAMETAKA¹, Kota SHIMOGAMA¹, Masaaki IWASAKI¹, Toru SAKAI^1,2, Kazuhiko OKAZAKI¹, Eiji NAKATA³, Kotaro AIYAMA³, Ryo HAYASHIZAKI³, Takahiro IIDA⁴ (1. Dia Consultants, 2. Waseda Univ., 3. CRIEPI, 4. CERES)

11:00 AM - 11:15 AM

[G1-O-9] fluid source in the diagenesis of pelagic sediments

*Hitomi MIZUNO¹, Asuka Yamaguchi¹, Akira Ijiri³, Takashi Sano² (1. AORI, the university of Tokyo, 2. Department of Geology and Paleontology, National Museum of Nature and Science, 3. Graduate School of Maritime Sciences, Kobe University)

11:15 AM - 11:30 AM

[G1-O-10] Rheology of San Carlos olivine aggregates at the brittle-plastic transition and the strength profile of oceanic plate

*Keishi OKAZAKI¹ (1. Hiroshima University)

11:30 AM - 11:45 AM

[G1-O-11] Simple topographic parameter reveals the along-trench distribution of frictional properties on shallow plate boundary fault

*Hiroaki KOGE¹, Juichiro ASHI², Jin-Oh PARK², Ayumu MIYAKAWA¹, Suguru YABE¹ (1. AIST, 2. AORI, UTokyo)

11:45 AM - 12:00 PM

[G1-O-12] Cross sections of a surface deformation that is not explained by tectonic events

*Eiji Nakata¹, Yasuto Hirata¹, Ryo Hayasizaki¹ (1. Central Research Institute of Electric Power Industry )

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