The great Haiyuan earthquake occurred at 20:06:09 on December 16, 1920 in the south of Ningxia Hui Autonomous Region. The magnitude of this earthquake is 8.5, lis
In accordance with the requirements of the National Key Technology R&D Program of the 11th "Five-year Plan", a densified seismic network consisting of 26 seismic s
815 earthquakes recorded by 12 seismic stations of the Zipingpu reservoir seismic network in 2009 were relocated using the double difference algorithm to analyz
In this paper,we derived the relationships between the travel time difference of sPn and Pn and the local earthquake focal depth.In these equations,the travel t