CALCULATION OF THREEDIMENSIONAL TERRAIN DEFORMATION OF WENCHUAN EARTHQUAKE WITH GPS AND InSAR DAT
Ban Baosong 1) ;Wu Jicang 1) ;Chen Yongqi 2) ;Feng Guangcai 1) ; and Hu Shouchao 1)
1)Department of Surveying and Geo-informatics, Tongji University, Shanghai 2000922)Dept. of Land Surveying and Geo-informatics,The Hong Kong Polytechnic University,Hong Kong 999077
Abstract：InSAR (Synthetic Aperture Radar Interferometry) can only obtain the displacements along direction of LOS (lineofsight), it is not the real three-dimensional surface deformation. Therefore it is difficult to analyze both vertical and horizontal terrain displacements. A method combining GPS and InSAR data to calculate threedimensional terrain displacements of Wenchuan earthquake is proposed. The results show that the earthquake pupture is obviously right-leteral and thrust.
Ban Baosong ,Wu Jicang ,Chen Yongqi et al. CALCULATION OF THREEDIMENSIONAL TERRAIN DEFORMATION OF WENCHUAN EARTHQUAKE WITH GPS AND InSAR DAT[J]. jgg, 2010, 30(4): 25-28.
