Evaluation of the Subsidence Rate of Izeh City and Analysis of Factors Influencing Its Occurrence

Nowadays, the risk of subsidence as a natural risk has covered many cities, including Izeh city. Considering that subsidence is associated with many negative effects for residential areas, in this research, the amount of subsidence in the Izeh Plain and the analysis of factors influencing its occurrence have been evaluated. In this research, Landsat satellite images, Sentinel 1 radar images, SRTM 30 meters high digital model and library information were used as research data. The most important research tools are ArcGIS, ENVI, IDRISI and GMT. The models used in the research included maximum likelihood model, LCM model and SBAS model. This research has been done in two general stages, in the first stage, the subsidence of the region was evaluated using the SBAS time series method, and in the second stage, using Landsat satellite images, the development process of man-made uses and areas A settlement has been evaluated. According to the results, the city of Izeh has subsided between 13 and 68 mm during a period of 2 years (from 2020/10/01 to 2022/15/01), the highest amount of which is related to the southern and southern regions. It was east of this city. Also, the results of this research have shown that the residential and man-made urban areas and urban outskirts of Izeh have encountered an increase of 7.2 square kilometers during the years 1992 to 2022, and considering that the highest amount of subsidence is also related to this has been areas. Also, based on the studies conducted in Izeh Plain, this plain is faced with the annual discharge of 14.8 Million Cubic Meters of underground water. The total results have shown that human factors, the development of man-made uses and the decline of underground water resources have caused the city of Izeh, especially its southern and southeastern regions, to be at risk of subsidence.