1. College of Geology Engineering and Geomatics, Chang’an University, Xi’an, Shaanxi, China;
2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu, Sichuan, China;
3. Earthquake Administration of Shanxi Province, Taiyuan, Shanxi, China;
4. Second Crust Monitoring and Application Center, Xi’an, Shaanxi, China