Institute of Geology China Earthquake Administration Beijing 100029 China;
Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China;
Earthquake Administration of Hebei Province Shijiazhuang 050021 China;
Earthquake Administration of Sichuan Province Chengdu 610041 China;
Earthquake Administration of Shimian City Shimian 625400 Sichuan China;
Earthquake Administration of Zigong City Zigong 643000 Sichuan China;