Post-seismic deformation detection using permanent scatters technology for East Kunlun fault after 2001 Kokoxili earthquake

This paper presents the preliminary result for the detection of post-seismic relaxation from the 2001 Ms 8.1 Kokoxili earthquake using coherent targets. 14 scenes of ENVISAT ASAR imagery from 2003 to 2007 are adopted in this research to study the post-seimic surface deformation in Kusai Lake region. Two data combination strategies are adopted and compared. The result shows that coherent targets or PS method works in West China´s plateau area for post-seismic crustal deformation observation. The measured historical deformations on point target positions are proved to be reasonable, which is about 7-9cm. Full combination based on less SLC data is proved to be much more efficient for PS data processing. Continuous deformation field was not retrieved because of the low density of PS.