*Xiaocan Liu¹、Peng Han²、Katsumi Hattori^3,4、Huaran Chen¹、Junjie Chen⁵ (1.Institute of geophysics, China Earthquake Administrition、2.Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China、3.Graduate School of Science, Chiba University, Chiba, Japan、4.Center for Environmental Remote Sensing, Chiba University, Chiba, Japan、5.Department of Earth Sciences, The University of Hong Kong, Pokfulam, China)