Japan Geoscience Union Meeting 2019

Session information

[J] Oral

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

[S-CG61] Dynamics in mobile belts

Mon. May 27, 2019 3:30 PM - 5:00 PM Convention Hall A (2F)

convener:Yukitoshi Fukahata(Disaster Prevention Research Institute, Kyoto University), Toru Takeshita(Department of Natural History Sciences, Graduate School of Science, Hokkaido University), Hikaru Iwamori(Geochemical Evolution Research Program, Japan Agency for Marine-Earth Science and Technology), Chairperson:Tomomi Okada, Ryosuke Ando(Graduate School of Science, University of Tokyo)

The dynamic behaviours 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 due to 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, and geology is necessary, as is the integration of observational, theoretical and experimental approaches. In addition, because rheological properties are greatly affected by fluids in the crust and fluid chemical reactions, petrological and geochemical approaches are also important. 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, and hydrology, as well as interdisciplinary studies, that relate to the dynamic behaviours of mobile belts.

3:30 PM - 3:45 PM

*Subhajit Ghosh1,2, Arijit Laik2, Santanu Bose2,3, Nibir Mandal4 (1.Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-Ku, Tokyo 113-0032, 2.Department of Geology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India, 3.Department of Geology, Presidency University, 86/1 College Street, Kolkata 700073, India, 4.Department of Geological Sciences, Jadavpur University, Kolkata 700032, India)

4:00 PM - 4:15 PM

*Tomomi Okada1, Satoshi Matsumoto2, Yoshihisa Iio3, Federica Lanza4, Clifford H Thurber4, Miu Matsuno1, Yuta Kawamura2, Tadashi Sato1, Stephen C Bannister5, John Ristau5, Martha K Savage6, John Townend6, Jarg Petttinga7, Francesca Ghisetti8, Richard H Sibson9 (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 3. Disater Prevention Research Institute, Kyoto University, 4.University of Wisconsin-Madison, U.S.A., 5.GNS Science, New Zealand, 6.Victoria University of Wellington, New Zealand, 7.University of Canterbury, New Zealand, 8.TerraGeoLogica, New Zealand, 9.University of Otago, New Zealand)




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