[S-CG51] New perspectives of subduction zone earthquake dynamics through experiments across-scales

[SCG51-01] Current status and future plan of deformation and fracture experiments at SPring-8/BL04B1

★Invited Papers

*Yuji Higo¹ (1.Japan Synchrotron Radiation Research Institute)

Keywords:Synchrotron Radiation Experiment, High pressure

In the past 20 years, the understanding of the crystal structure and chemical composition of minerals that make up the Earth's inner spherical shell structure has been dramatically improved by in situ observation experiments using synchrotron radiation under high pressure at SPring-8. On the other hand, high-resolution seismic tomography and other techniques have revealed the heterogeneity of the Earth's interior, and a unified understanding of global dynamics and geological phenomena such as earthquakes and volcanoes, which are closely related to human life, is now required. In the future, there is an urgent need to accumulate experimental data necessary for constructing a dynamic picture of the Earth, such as the fracture of mantle minerals, plastic flow, viscoelasticity, elemental diffusion, and viscosity, foaming, and partial melting of magma, which are necessary for interpreting seismic tomography from a material science perspective. In this presentation, we will introduce the past efforts of deformation and fracture experiments at SPring-8/BL04B1, and the future plans for the advancement of these experiments to capture the dynamic phenomena.