Effect of Kunlun Ms 8.1 earthquake on crustal deformation in northeastern edge region of Qinghal-Tibet plateau  

作　　者：Duxin Cui Qingliang Wang Wenping Wang 

机构地区：[1]Second Crust Monitoring and Application Center, China Earthquake Administration,Xi＇an 710054

出　　处：《Geodesy and Geodynamics》2010年第1期34-41,共8页大地测量与地球动力学（英文版）

基　　金：supported by the National Natural Science Fundation of China(40674057);Earthquake Science Joint Fundation of China(A07132)

摘　　要：Seismic fault parameters can be inversed with Okada model based on deformation data before and after earthquakes in focal region and its adjacent area. Co-seismic displacements can be simulated by using these parameters,and then regional velocity field obtained by deducting the co-seismic displacements from the observed displacements by GPS method. We processed and analyzed the data in the northeastern edge region of the Qinghai-Tibet plateau observed during 2001 -2003 in two steps： firstly, the displacements generated by Kunlun MsS. 1 earthquake of 2001 in this region was simulated, and secondly, deducted the co-seismic displacements from it and obtained the horizontal crustal velocity field. The results reveal ： 1 ） the effect of Kunlun Ms8.1 earthquake on crustal deformation in this region is significant; 2 ）the velocity field obtained with this method is better than the original GPS velocity field in reflecting the status of regional crustal movement and strain.Seismic fault parameters can be inversed with Okada model based on deformation data before and after earthquakes in focal region and its adjacent area. Co-seismic displacements can be simulated by using these parameters,and then regional velocity field obtained by deducting the co-seismic displacements from the observed displacements by GPS method. We processed and analyzed the data in the northeastern edge region of the Qinghai-Tibet plateau observed during 2001 -2003 in two steps： firstly, the displacements generated by Kunlun MsS. 1 earthquake of 2001 in this region was simulated, and secondly, deducted the co-seismic displacements from it and obtained the horizontal crustal velocity field. The results reveal ： 1 ） the effect of Kunlun Ms8.1 earthquake on crustal deformation in this region is significant; 2 ）the velocity field obtained with this method is better than the original GPS velocity field in reflecting the status of regional crustal movement and strain.

关 键 词：northeastern edge of the Qinghai-Tibet block co-seismic displacement GPS velocity field Kunlun Ms8.1 earthquake crustal movement 

分 类 号：P631.4[天文地球—地质矿产勘探] P315.7[天文地球—地质学]