1. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
2. Sinopec Geophysical Research Institute, Nanjing 211103, China
3. Department of Seismology, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada 22860, Mexico
4. School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China