Abstract：On the basis of cubic spline function and stack InSAR,we used the GPS data of more than 10 years and over 200 SAR images from 2003 to 2007 to calculate the 3D velocity diagram in the area including Kashi depression and the border region of Pamir and the south Tianshan. There is an obvious boundary feature for the vertical changes in Kashi depression where its north boundary is the south Atushi fault, its sorthwest boundary is the Wupar fault and its east boundary is the Tarim basin. The vertical changes within the interior of Kashi depression is featured by subsidence at 1mm/a, while the peripheral region is featured by uplift at 1mm/a and decreasing from east to west. The front boundary between the basement of Tarim basin, the south Tianshan and the Pamir Plateau are south Autshi fault and Wupar fault. The vertical change of Keping nappe is characteristiced by its tectonics structure. The fold belts uplift and the vally area subside at a rate about 1--1.5 mm/a. Although the Puchang fault crosscuts the Keping nappe, there are not obvious vertical changes in both sides revealed from profiles across the fault. The lateral changes of the shorten rate of Tianshan across Puchang fault from GPS are evident, which indicates that the Puchang fault is a quasi transform fault dominated by strike slip.
Qiao Xuejun,Nie Zhaosheng,Yang Shaomin et al. STUDY ON CRUSTAL DEFORMATION IN KASHI DEPRESSION AND NEIGHBORING REGION OF PAMIR AND TIANSHAN BY GPS AND InSAR[J]. jgg, 2011, 31(3): 1-7.
