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


Ms in GIS&RS, Yazd Branch, Islamic Azad University, Yazd, Iran


The main reason for subsidence in Iran is the large amount of water withdrawn from
underground resources, which, if not managed properly will cause irreparable
damages. 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 dryness
of the past decade, and the abundance of groundwater from the subsidence, it
accelerates the destruction of ancient works in these areas. In this research, the area of
Persepolis, which is 57 km northeast of Shiraz and 10 km north of Marvdasht city, is
based on the level of the land subsidence using differential radar interferometry
technique. Using Eoli-SA 9.4.3 software, two images were taken from the ASVAR
data series of the ENVISAT satellite. The data processing with SARSCAPE 4.3
software, a radar differential interference method, has been implemented at two
different times in a region. A new image called an interferogram or interferometer was
provided that contains the target geophysical information. Therefore, the amount of
subsidence or uplift was determined in the three interlaced states. During the research
period from 23/12/2004 to 17/12/2009, which is 1820 days, it has been clear that the
ancient area of Persepolis, the historic city of the pool and the role of Rustam between
two and three centimeters subsided, and the role of Rajab is also between the four has
seen up to five centimeters of subsidence.