[S-CG39] Science of slow earthquakes: Toward unified understandings of whole earthquake process

Sun. Jun 6, 2021 10:45 AM - 12:15 PM Ch.21 (Zoom Room 21)

convener:Satoshi Ide(Department of Earth an Planetary Science, University of Tokyo), Hitoshi Hirose(Research Center for Urban Safety and Security, Kobe University), Kohtaro Ujiie(Faculty of Life and Environmental Sciences, University of Tsukuba), Takahiro Hatano(Department of Earth and Space Science, Osaka University), Chairperson:Kimihiro Mochizuki(Earthquake Prediction Research Center, Earthquake Research Institute, University of Tokyo)

Accumulating observational studies on various types of slow deformation events, such as tectonic tremors, very low frequency events, and slow slip events, portrays some universal characteristics in generally complex behavior, including interaction among events and influence by various outer loading. Some of these phenomena seem to have causal relation with the occurrence of very large earthquakes. A unified understanding of these slow and fast earthquake processes requires an approach integrating geophysics, seismology, geodesy, geology, and non-equilibrium statistical physics. We welcome presentations based on, but not limited to, geophysical observation, data analysis, analytical theory, numerical simulation, field study, and laboratory experiments.

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10:45 AM - 11:00 AM

[SCG39-25] Spatio-temporal variation of fluid migration associated with slow earthquakes in the shallow Nankai subduction zone

*Takashi Tonegawa¹, Shunsuke Takemura² (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, The University of Tokyo)

11:00 AM - 11:15 AM

[SCG39-26] Land and marine long-term magnetotelluric observations around the western Nankai slow slip area

*Hiroshi Ichihara^1,2, Makoto Uyeshima³, Hayato Nakamura¹, Maki Hata³, Tada-nori Goto⁴, Noriko Tada², Tetsuo Matsuno⁵, Shinya Sato⁶, Yoshiya Usui³, Ryokei Yoshimura⁷, Koki Aizawa⁸ (1.Graduate school of Environmental Studies, Nagoya University, 2.JAMSTEC, 3.ERI, University of Tokyo, 4.University of Hyogo, 5.KOBEC, Kobe University, 6.Graduate school of Engineering, Kyoto University, 7.DPRI, Kyoto University, 8.Graduate school of Science, Kyushu Univeristy)

11:15 AM - 11:30 AM

[SCG39-27] Active source seismic experiment investigating structural characteristics associated with slow earthquake activities in the Hyuga-nada, southwestern Japan

*Seiichi Miura¹, Kimihiro Mochizuki², Ryuta Arai¹, Yasuyuki Nakamura¹, Yuka Kaiho¹, Gou Fujie¹, Shuichi Kodaira¹, Rie Nakata², Yanxue Ma², Masataka Kinoshita², Yoshitaka Hashimoto³, Yohei Hamada¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, University of Tokyo, 3.Kochi University)

11:30 AM - 11:45 AM

[SCG39-28] Seismic characteristics of the northern Hikurangi subduction zone revealed by offshore seismic observations

*Kimihiro Mochizuki¹, Yusuke Yamashita², Emily Warren-Smith³, Martha K Savage⁴, Laura M Wallace³, Stuart Henrys³ (1.Earthquake Prediction Research Center, Earthquake Research Institute, University of Tokyo, 2.Disaster Prevention Research Institute, Kyoto University, 3.GNS Science, 4.Victoria University of Wellington)

11:45 AM - 12:00 PM

[SCG39-29] Temporal velocity variations in the northern Hikurangi margin and their relation to slow slip

*Weiwei Wang¹, Martha Savage¹, Alec Yates^1,2, Hubert Zal¹, Carolyn Boulton¹, Megan Kortink³, Tim Stern¹, Bill Fry³, Kimihiro Mochizuki⁴, Spahr Webb⁵, Wallace Laura³ (1.Victoria University of Wellington, 2.Université Grenoble Alpes, Université Savoie Mont Blanc, 3.GNS Science, 4.Earthquake Research Institute, University of Tokyo, 5.Lamont-Doherty Earth Observatory, Columbia University)

12:00 PM - 12:15 PM

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