HeZhen Wu¹, Wei Zhu², TaiMing He³, ZhengYi Liu³ and XiaoWen Lan⁴, (1)Institute of Geophysics, China Eathquake Administration, Beijing, China, (2)Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS), Beijing, China, (3)Institute of Geophysics, Chinese Earthquake Administration, Beijing, China, (4)Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China