High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau

Characteristics of current crustal movement in Qinghai-Tibet Plateau were analyzed with least square collusion and wavelet using GPS data,and crustal movement strength and vortex movement were analyzed quantitatively.The conclusions are drawn as follows:The crustal movement strength in Qinghai-Tibet Plateau decreases from west to east along arc tectonic ruptures formed by Kala-Kunlun,Mani,Yushu,Xianshuihe and Xiaojiang faults.The crustal movement strengths in north and west are stronger than those of south and east in the Sichuan-Yunnan block,of which east boundaries are obvious,and west boundaries are not.There are three vortex zones in Qinghai-Tibet Plateau.Firstly,Lhasa,Qiangtang,and mid-west of Sichuan-Yunnan region clockwisely rotate,and areas to east of Yadong-Gulu are high-value areas.Secondly,Qaidam block and that to its north counterclockwisely rotate,and high-value areas are between West Kunlun and Altun.Thirdly,the boundaries of Qinghai-Tibet Plateau and southern China block counterclockwisely rotate,and high-value areas are in the corner of Longmenshan and Anninghe.