JpGU-AGU Joint Meeting 2020

Session information

[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG63] Dynamics in mobile belts

convener:Yukitoshi Fukahata(Disaster Prevention Research Institute, Kyoto University), Ray Y Chuang(Department of Geography, National Taiwan University), Toru Takeshita(Department of Natural History Sciences, Graduate School of Science, Hokkaido University), Hikaru Iwamori(Earthquake Research Institute, The University of Tokyo)

The dynamic behaviors of mobile belts are expressed across a wide range of time scales, from the seismic and volcanic events that impact society during our lifetimes, to orogeny and the formation of large-scale fault systems which can take place over millions of years. Deformation occurs on length scales from microscopic fracture and flow to macroscopic deformation to plate-scale tectonics. To gain a physical understanding of the dynamics of mobile belts, we must determine the relationships between deformation and the driving stresses associated with plate motion and other causes, which are connected through the rheological properties of the materials. To understand the full physical system, an integration of geophysics, geomorphology, geology, petrology, and geochemistry is necessary, as is the integration of observational, theoretical and experimental approaches. In particular, rheological properties, which are physically affected by fluids in the crust and chemical reactions assisted by fluids, can be resolved only through such an interdisciplinary approach. After the 2011 great Tohoku-oki earthquake, large-scale changes in seismic activity and regional scale crustal deformation were observed, making present-day Japan a unique natural laboratory for the study of the dynamics of mobile belts. This session welcomes presentations from different disciplines, such as seismology, geodesy, tectonic geomorphology, structural geology, petrology, geochemistry and hydrology, as well as interdisciplinary studies, that relate to the dynamic behaviors of mobile belts.

*Yoshiya Usui1,2, Makoto Uyeshima1, Tsutomu Ogawa1, Ryokei Yoshimura3, Naoto Oshiman3, Satoru Yamaguchi4, Hiroaki Toh5, Hideki Murakami6, Koki Aizawa7, Toshiya Tanbo8, Yasuo Ogawa9, Tadashi Nishitani10, Shin'ya Sakanaka10, Masaaki Mishina11, Hideyuki Satoh12, Tada-nori Goto13, Takafumi Kasaya14, Toru Mogi15, Yusuke Yamaya16, Ichiro Shiozaki17, Yoshimori Honkura18 (1.Earthquake Research Institute, the University of Tokyo, 2.ITOCHU Techno-Solutions Corporation, 3.Disaster Prevention Research Institute, Kyoto University, 4.Graduate School of Science, Osaka City University, 5.Graduate School of Science, Kyoto University, 6.Natural Sciences Cluster-Science and Technology Unit, Research and Education Faculty, Kochi University, 7.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 8.Tateyama Caldera Sabo Museum, 9.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology, 10.Graduate School of International Resource Sciences, Akita University, 11.Graduate School of Science, Tohoku University, 12.Nuclear Regulation Department, Nuclear Regulation Authority, 13.Graduate School of Life Science, University of Hyogo, 14.Japan Agency for Marine–Earth Science and Technology, 15.Faculty of Science, Hokkaido university, 16.National Institute of Advanced Industrial Science and Technology, 17.Graduate School of Engineering, Tottori University, 18.Graduate School of Science and Engineering, Tokyo Institute of Technology)

*Kiyokazu Oohashi1, Makoto Otsubo2, Satoshi Matsumoto3, Kenta Kobayashi4, Katsushi Sato5, Takuya NISHIMURA6 (1.Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2.Geological Survey of Japan, AIST, 3.Faculty of Science, Kyushu University, 4.Department of Geology, Faculty of Science, Niigata University, 5.Graduate School of Science, Kyoto University, 6.Disaster Prevention Research Institute, Kyoto University)

*Kwo-Hwa Chen1, Kuo-En Ching2, Ray Y Chuang3, Shih-Han Hsiao2, Ming Yang2, He-Chin Chen4 (1.Department of Real Estate and Built Environment, National Taipei University, New Taipei City, Taiwan, 2.Department of Geomatics, National Cheng Kung University, Tainan City, Taiwan, 3.Department of Geography, National Taiwan University, Taipei City, Taiwan, 4.Control Survey Section, National Land Surveying and Mapping Center, Taichung City, Taiwan)