Settlement Monitoring and Analysis of PS-InSAR Technology in Caofeidian New Area
With the rapid development of Caofeidian New City,the phenomenon of land subsidence has attracted more and more attention.In order to analyze the subsidence characteristics and causes of this area,35 Sentinel-1A scenes from February 2019 to December 2021 were used in this paper Based on PS-InSAR technology,the land surface subsidence information of Caofeidian New Area is obtained.The cumulative settlement amount of feature points is extracted and the spatio-temporal variation characteristics of the settlement area are analyzed.The results show that the overall regional settlement of the study area is mainly located in the southwest direction,and the deformation rate is concentrated in the range of-32.30 mm/a to-3.48 mm/a.The most serious deformation area is located in Tangshan Bay Ecological City,with the maximum settlement exceeding 170 mm.The de-formation area has a large area and has not reached a stable state.The subsidence of the monitoring area will continue to sink in the future,which is mainly related to the load of groundwater mining construction facilities and the self-compression and consolidation of the blowfill.
Caofeidian New AreaPS-InSARland subsidencesequential variation
万方数据
维普
