Abstract：The GPS observation results showed that an obvious change took place in two southern profiles of Xianshuihe fault after the Wenchuan Ms8.0 earthquake. Movements of sites close to the fault were of from preseismic leftlateral strikeslip to postseismic dextral strikeslip, from preseismic compression to postseismic tensile. The impact of the Wenchuan earthquake on profile Shimian is bigger than that on profile Kangding in dextral strikeslip, tensile and scope. The impact of the Wenchuan earthquake wasn’t obvious on sites farther away from the fault. The seismic hazard of southern segment of Xianshuihe fault might declined in a certain extent with the Wenchuan earthquake, because of background of leftlateral strikeslip.
Fang Ying,Jiang Zaisen,Yang Yonglin et al. DEFORMATION CHARACTERISTICS OF SOUTHERN SEGMENT OF XIANSHUIHE FAULT BEFORE AND AFTER WENCHUAN Ms8.0 EARTHQUAKE[J]. jgg, 2010, 30(第3期): 22-26.
