Abstract:Based on the GPS regional station observations from 1999—2011 in the Tibet and Qinghai areas, using Euler model, multikernel function method and the spherical strain model, the regional NoNetRotation frame motion field and strains are calculated in the central and southern QinghaiTibet Plateau, and compares and analyses the results before and after the Wenchuan earthquake. The results show: The general movement features of the study area did not change greatly over the years. The crust motion is generally the EastWest tensive movement on the whole. In the central area, the crust motion is primarily the NorthSouth compressive movement, and disparts from south to north gradually. The north movement is mainly concentrated in the central Himalaya block and Lhasa block, and obviously weakened in the north Lhasa block. While in boundary of the Lhasa block and Qiangtang block, the motion changes obviously as the EastWest movement. The eastward motion is strengthened in the study area after the Wenchuan earthquake.
Liu Zhiguang,Yang Bo,Lu Shuangyin et al. RECENT HORIZONTAL CRUST DEFORMATION IN CENTRAL
AND SOUTHERN QINGHAITIBET PLATEAU[J]. jgg, 2013, 33(3): 16-20.