JpGU-AGU Joint Meeting 2017

Session information

[EE] Oral

S (Solid Earth Sciences) » S-IT Science of the Earth's Interior & Tectonophysics

[S-IT25] [EE] New constraints on the asthenosphere and its role in plate tectonics

Sat. May 20, 2017 10:45 AM - 12:15 PM A02 (Tokyo Bay Makuhari Hall)

convener:William Bythewood Hawley(University of California Berkeley), Hitoshi Kawakatsu(Earthquake Research Institute, University of Tokyo), Kosuke Heki(Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University), Thorsten W Becker(Jackson School of Goesciences, The University of Texas at Austin), Chairperson:William Hawley(University of California Berkeley), Chairperson:Hitoshi Kawakatsu(Earthquake Research Institute, University of Tokyo)

The Earth's asthenosphere represents a critical region that can control the influence tectonic plates and other surficial processes have on the Earth's deeper mantle, and vice versa. The composition of the Earth's tectonic plates is largely a result of magmatism at mid-ocean ridges and arc systems, and accumulation from below (underplating), which is in turn modulated by the physics and chemistry present in the asthenosphere. Uncertainties in the forces that drive tectonic plates largely arise from incomplete descriptions of the asthenosphere's mechanical properties. Visco-elastic processes ranging from post-seismic deformation to glacial isostatic adjustment are also influenced by the asthenosphere. Recent modeling techniques and new datasets, particularly from the seafloor and subduction zones, have allowed for a better characterization of the asthenosphere. We seek contributions from any discipline from observation to theory, including seismology, geodesy, chemistry, geology, magnetotellurics, and geodynamics, that shed light on the chemistry and physics of continental or oceanic asthenosphere.

10:45 AM - 11:00 AM

*Akiko Takeo1, Hitoshi Kawakatsu1, Takehi Isse1, Kiwamu Nishida1, Hajime Shiobara1, Hiroko Sugioka2, Aki Ito3, Hisashi Utada1 (1.Earthquake Research Institutute, the University of Tokyo, 2.Department of Planetology, Kobe University, 3.Japan Agency for Marine-Earth Science and Technology)

11:15 AM - 11:30 AM

*Kiyoshi Baba1, Noriko Tada2,1, Tetsuo Matsuno3, Pengfei Liang1, Ruibai Li1, Luolei Zhang4, Hisayoshi Shimizu1, Natsue Abe5, Naoto Hirano6, Masahiro Ichiki7, Hisashi Utada1 (1.Earthquake Research Institute, University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.Kobe Ocean Bottom Exploration Center, Kobe University, 4.School of Ocean and Earth Science, Tongji University, 5.Research and Development Center for Ocean Drilling Science, Japan Agency for Marine-Earth Science and Technology, 6.Center for Northeast Asian Studies, Tohoku University, 7.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)




Please log in with your participant account.
» Participant Log In