Simultaneous Inversion Of Earthquake Hypocenters And Velocity Structure In Zipingpu Area

In this study, we used the earthquake observation reports recorded by 7 Zipingpu Reservoir Area earthquake stations and 10 regional seismic stationsduring the period from August 2004 to May 2008. Through simultaneous inversion method of earthquake hypocenters and velocity structure, we got the velocity structure and the earthquake location of the zipingpu area by simulps14.We got the results of the P wave velocity structure, S wave velocity structure and Vp/Vs. At the same time, all theearthquake locations s have been recorded, and they were found Concentrated in three areas. The responses of the reservoir storage were different in different areas. The results of velocity structure elaborated the affects of Reservoir seepage to Wenchuan M8.0 earthquake. the influence scope in depth of Reservoir seepage in the southwest of zipingpu Reservoir was no more than 8kmwhich showed that the water was not the direct factor caused Wenchuan Earthquake.