INSAR STUDY OF LANDSLIDES IN THE REGION OF LAKE SEVAN– ARMENIA

摘要

The region of Lake Sevan in Armenia is of theoreticaland practical interest due to its very high landslidephenomena caused by metrological and hydrologicalreasons. Based on the ESA Principal InvestigatorNumber C1P-6051 and requested data from ASARinstrument of ESA ENVISAT satellite four single lookcomplex images including two images from 2008 andtwo images from 2009 of the region of the Sevan Lakein Armenia are obtained and thoroughly investigated.The one of the images is pointed out as a master and therest of them, three images as slaves. Hence, threeinterferometric pairs are produced. Then data of NASASRTM mission is applied to the interferometric pairs inorder to remove topography from the interferograms.Three interferograms generated illustrate decreasing ofcoherence caused by high temporary decorelation,which means decreasing the level of coincidence ofSLC’s in each interferometric pair, according to thetime of acquisition each of them.