EVALUATION OF LAND SUBSIDENCE TREND USING INSAR TECHNIQUE IN DAMANEH PLAIN, ISFAHAN, IRAN

摘要

Advanced differential interferometric synthetic aperture radar techniques achieve acceptable results in relationship study of Earth's surface movement Such as subsidence. In recent years, this techniques attract the attention of many researchers. The results of this method can be compared for examining the verification of geotechnical methods and be used for interpretation of ground displacement. In this paper for survey the trend of Damaneh plain subsidence was used from radar data of ASAR sensor (4 Images relative to 2005 (track 250) and 3 images relative to 2011-2012 (track 457)). We processed Data by SARSCAPE software. Rate and extension of subsidence was determined by 5 created interferogram. So rate of subsidence was obtained about 7.6 cm during 8 month time observation relation to 2005 and about 7 cm between 20110712 to 20120108. Subsidence in the north parts of Damaneh city is the most wide and corresponding to tracks measured in field survey.