Affiliation: | Sun Cichang,Wang Xusheng,Liu Qingfang,Tao Yulu,Yu Ping,and Feng RuiInstitute of Geophysics,SSB,Beijing 100081,China Department of Geophysics,Peking University,Beijing 100871,China Seismnlogical Bureau of Hunan Province,Changsha 410001,China Center for Seismological Data and Information,SSB,Beijing 100045,China |