Geotectonic Critical Analysis with Emphasis on Active Remote Sensing (ASAR Sensor) Case study: Persepolis

The main reason for subsidence in Iran is the large amount of water withdrawn fromunderground resources, which, if not managed properly will cause irreparabledamages. To deal with such a problem, it is necessary to identify the subsidence areas.Most country s ancient artifacts have been built on fertile plains, and due to the drynessof the past decade, and the abundance of groundwater from the subsidence, itaccelerates the destruction of ancient works in these areas. In this research, the area ofPersepolis, which is 57 km northeast of Shiraz and 10 km north of Marvdasht city, isbased on the level of the land subsidence using differential radar interferometrytechnique. Using Eoli-SA 9.4.3 software, two images were taken from the ASVARdata series of the ENVISAT satellite. The data processing with SARSCAPE 4.3software, a radar differential interference method, has been implemented at twodifferent times in a region. A new image called an interferogram or interferometer wasprovided that contains the target geophysical information. Therefore, the amount ofsubsidence or uplift was determined in the three interlaced states. During the researchperiod from 23/12/2004 to 17/12/2009, which is 1820 days, it has been clear that theancient area of Persepolis, the historic city of the pool and the role of Rustam betweentwo and three centimeters subsided, and the role of Rajab is also between the four hasseen up to five centimeters of subsidence.

Keywords:

Geotechnical , Radar interferometry , Subsidence , Persepolis