JpGU-AGU Joint Meeting 2020

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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.

[SCG63-P11] Non-double-couple earthquake in the focal area of the 2000 Western Tottori earthquake by “0.1 manten” hyperdense seismic observation and spatial distribution of non-double-couple components

*Yuto Hayashida1, Takumi Motokoshi1, Satoshi Matsumoto2, Yoshihisa Iio3, Shin'ichi Sakai4, Aitaro Kato4, Group for "0.1 manten" hyperdense seismic observation Group registration (1.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University , 3.Disaster Prevention Research Institute, Kyoto University, 4.Earthquake Research Institute, University of Tokyo)

[SCG63-P16] Correlation between physical and hydraulic properties of rock fractures constrained by surface geometry: Digital rock physics approach

*Kazuki Sawayama1, Takuya ISHIBASHI2, Fei Jiang3, Takeshi Tsuji4, Yasuhiro Fujimitsu4 (1.Graduate school of engineering, Department of Earth Resources Engineering, Kyushu University, 2.Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, 3.Department of Mechanical Engineering, Faculty of Engineering, Yamaguchi University, 4.Department of Earth Resources Engineering, Faculty of engineering, Kyushu University)

[SCG63-P20] Syn-orogenic extrusion of HP-LT blueschists in the northern Tyrrhenian Sea (northern Apennines, Italy)

*Samuele Papeschi1, Eric Ryan2, Hans Joachim Massonne3,4, Giovanni Musumeci5,6, Francesco Mazzarini6, Giulio Viola7 (1.Japan Agency for Marine Earth-Science and Technology, Kochi, Japan, 2.Department of Geoscience and Petroleum, Norwegian University of Science and Technology, Trondheim, Norway, 3.School of Earth Sciences, China University of Geosciences, Wuhan, P.R. China, 4.Fakultät Chemie, Universität Stuttgart, Stuttgart, Germany, 5.Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy, 6.Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy, 7.Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna, Italy)