Abstract：On the basis of 28-scene descending orbit InSAR data of Sentinel in 2019, we monitor the average annual subsidence rate of Dongying city, and analyze and verify the time series of two interferometries and various deformation centers in different seasons. The results show that there are five subsidence areas in Dongying city, all located in the coastal area. The maximum annual rate of subsidence is nearly 300 mm/a. The subsidence characteristics are different from the types of underground fluid extraction, such as groundwater extraction, oil exploitation and brine development, and have obvious seasonal characteristics. In general, each deformation area shows a large linear rate of settlement from January to May, and rebounds to different degrees and then slowly subsides from June to December.The deformation trend of the interferometry profile also qualitatively verifies the correctness of time series deformation.
ZHONG Chuhan,WANG Qiang,WANG Xiaying et al. Surface Displacement Monitoring and Inducing Factors Analysis of Dongying City Base on InSAR[J]. jgg, 2021, 41(7): 727-731.
