Deformation detection and cause analysis of Beibu gulf based on PS-InSAR in Guangxi
Affected by extreme weather conditions,subsidence geological disasters occur frequently in Guangxi region.To ensure regional sustainable development,36 Sentient-1A images were used to explore the land deformation situation and analyze its causes.Based on PS InSAR and SB AS technology,surface subsidence information from January 2018 to December 2020 in the Beibu Gulf region of Guangxi was obtained.The results show that the two methods have good consistency,the maximum cumulative settlement is-78.1 mm and the maximum average deformation rate is-22.664 mm/a.Combining rainfall data with human activity intensity,the causes of surface deformation were analyzed.The results indicate that the cumulative subsidence in the Beibu Gulf region of Guangxi is positively correlated with human activity intensity;Human activities and rainfall are important reasons for the large-scale irregular subsidence in the Beibu Gulf region of Guangxi.
SARD-InSARPS-InSARuneven land subsidenceanalysis of subsidence causes
国家科技期刊平台
NSTL
万方数据
