Abstract：The seismic fault parameters can be inversed with Okada model based on the deformation data before and after earthquakes in the focal region and its adjacent area. Coseismic displacements are simulated by use of these parameters and then the regional velocity field is obtained by deducting the coseismic displacements from the GPS observation displacements. We processed and analyzed the data in northeastern margin of the QinghaiTibet plateau observed during 2001-2003 in two steps: firstly, simulated the displacements generated by Kunlun Ms8.1 earthquake occurred in 2001 in this region, and then obtained the horizontal crustal velocity field by deducting the coseismic displacements. The results reveal: 1) the effect of Kunlun Ms8.1 earthquake on the northeastern margin of QinghaiTibet plateau is obvious; 2) the velocity field obtained with this method is better than the original GPS velocity field for reflecting the status of regional crustal movements and strain.
Cui Duxin,Wang Qingliang,and Wang Wenping. EFFECT OF KUNLUN Ms 8.1 EARTHQUAKE ON CRUSTAL DEFORMATION IN NORTHEASTERN MARGIN OF QINGHAITIBET PLATEAU[J]. jgg, 2008, 28(3): 1-8.
