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 9:00 AM - 10:30 AM 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:Thorsten Becker(Jackson School of Goesciences, The University of Texas at Austin), Chairperson:Kosuke Heki(Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

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.

9:30 AM - 9:45 AM

*Yan Hu1, Nikolay V. Shestakov2,3, Roland Bürgmann4, Nikolay Titkov5, Sergey Serovetnikov6, Alexander Prytkov6, Nikolai F. Vasilenko6, Kelin Wang7 (1.University of Science and Technology of China, 2.Institute for Applied Mathematics of the Far Eastern Branch of the Russian Academy of Sciences, 3.Far Eastern Federal University, 4.University of California Berkeley, 5.Kamchatka Branch of the Geophysical Survey of the Russian Academy of Sciences, 6.Institute of Marine Geology and Geophysics of the Far Eastern Branch of the Russian Academy of Sciences, 7.Pacific Geoscience Centre, Geological Survey of Canada)

×

Authentication

×

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