Evaluation of the Amount of Subsidence of the Urban Area and Urban Periphery of Jahrom using Radar Interferometric Method

Document Type : Research Paper

Authors

Professor of Geography and Urban Planning, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

The increasing trend of population and excessive use of underground water resources have caused many cities in the country to be at risk of subsidence. Among the cities that have faced the challenge of subsidence in recent years is the city of Jahorm in Fars province. Considering the importance of the subject, in this research, the evaluation of the subsidence of the urban area and the urban periphery of Jahrom has been discussed. In this research, Sentinel 1 radar images, Landsat satellite images, and information on groundwater resources of the region were used as the most important research data. The most important research tools included SNAP and ArcGIS software. The most important research tools included SNAP and ArcGIS software. In this research, first the rate of subsidence of the area was calculated and then its relationship with environmental factors was analyzed. Based on the results, the study area has experienced a maximum of 234 mm of subsidence during a 1-year period. The results of the spatial analysis of the subsidence indicate that in a general trend, the rate of subsidence towards the northern areas of Jahrom city has an increasing trend, and in total, the rate of subsidence in the urban area of ​​Jahrom is between 28 and 179 mm. Given that the highest rate of subsidence was in agricultural lands and areas with the highest decline in groundwater resources, it can be said that the main reason for the subsidence of the region was the intensive exploitation of groundwater resources.

Keywords


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