Japan Geoscience Union Meeting 2015

Session information


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

[S-CG57] Structure, evolution and dynamics of mobile belts

Thu. May 28, 2015 9:00 AM - 10:45 AM IC (2F)

Convener:*Toru Takeshita(Department of Natural History Sciences, Graduate School of Science, Hokkaido University), Hiroshi Sato(Earthquake Prediction Research Center, Earthquake Research Institute, The University of Tokyo), Koichiro Obana(Research and Development Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Takuya NISHIMURA(Disaster Prevention Research Institute, Kyoto University), Yukitoshi Fukahata(Disaster Prevention Research Institute, Kyoto University), Aitaro Kato(Graduate School of Environmental Studies, Nagoya University), Jun Muto(Department of Earth Sciences, Tohoku University), Katsushi Sato(Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University), Shuichi Kodaira(Institute for Research on Earth Evolution Japan Agency for Marine-Earth Science and Technology), Takeshi Sagiya(Disaster Mitigation Research Center, Nagoya University), Tatsuya Ishiyama(Earthquake Research Institute, University of Tokyo), Makoto MATSUBARA(National Research Institute for Earth Science and Disaster Prevention), Yasutaka Ikeda(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), Chair:Tadashi Yamasaki(National Institute of Advanced Industrial Science and Technology)

Since the targets of dynamics in mobile belts range from orogeny and the formation of large-scale faults which occur for several hundreds to thousands years to seismic and volcanic activities which occur during a lifetime of human being, the integration of geophysics, geology and geomorphology is necessary to reveal the essence. In order to reveal dynamics in mobile belts, it is required that the temporal and spatial development of stress field due to plate movement and rheological properties must be clarified. However, not only stress in the crust has not been known, but also the rheological properties characterized by elasto-visco-plastic materials, are very complex, which depend on the time scale and stress and temperature. Further, since the properties are greatly affected by fluids and reaction via fluids, petrological and geochemical approaches are also important for the clarification. Since changes in seismic activities and large-scale crustal movement have been occurring in the whole Japanese islands due to large changes of stress and strain fields since the great Tohoku-oki earthquake, the present time is best timing to work on these researches on dynamics in mobile belts. This session welcomes presentations from observational, experimental and modeling researches of different disciplines which aim at revealing the nature of dynamics in mobile belts, such as seismology, geodesy, tectonic geomorphology, structural geology, petrology, geofluids, etc.

10:15 AM - 10:30 AM

*Shin'ichi SAKAI1, Eiji KURASHIMO1, Kazushige OBARA1, Takaya IWASAKI1, Hiroaki TAKAHASHI2, Satoshi MATSUMOTO3, Megumi KAMIZONO3, Tomomi OKADA4 (1.Earthquake Research Institute, the University of Tokyo, 2.Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University, 3.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 4.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Tohoku University)