Ground infrastructure monitoring in coastal areas usingtime-series inSAR technology:the case study of Pudong International Airport,Shanghai  

作　　者：Bei An Yanan Jiang Changcheng Wang Peng Shen Tianyi Song Chihao Hu Kui Liu 

机构地区：[1]College of Earth Science,Chengdu University of Technology,Chengdu,People’s Republic of China [2]School of Geosciences and Info-Physics,Central South University,Changsha,People’s Republic of China [3]State Key Laboratory of Geohazard Prevention and Geoenviroment Protection,Chengdu University of Technology,Chengdu,People’s Republic of China

出　　处：《International Journal of Digital Earth》2023年第1期355-374,共20页国际数字地球学报（英文）

基　　金：supported by the National Natural Science Foundation of China[grant no 41790445];the Key Research and Development Program of Sichuan Province[grant no 2023YFS0439].

摘　　要：Shanghai Pudong International Airport(PDIA),with its east side built along the coast with weak geological conditions,is prone to uneven foundation settlement due to the consolidation and compression of soil and erosion of coastal tides,affecting the safe operation of the airport.Therefore,it is crucial to conduct dynamic subsidence monitoring within the airport,especially in the runway area.29 scenes of ascending track Sentinel-1A radar images from August 2016 to June 2018 are selected to perform surface deformation inversion based on PS-InSAR and improved SBAS-InSAR for PDIA and its around coastal area.Through cross-validation,the reliability of the time-series InSAR technique for dynamic monitoring of surface deformation of coastal zone infrastructures is confirmed.The results show severely uneven settlement.By combining the monitoring results with the local geological and hydrological dataset,the driving factors of differential deformation of the infrastructures are analyzed,including stratigraphic geological conditions,ground loadings,foundation treatment methods,water erosion,and groundwater level changes.Finally,the time-series deformation characteristics and the causes of PDIA’s runway are emphasized based on the PS deformation results.This case provides a reference for the safety management of critical infrastructure in coastal areas using advanced InSAR technique.

关 键 词：SAR interferometry coastal management permanent scatterer short baseline subsets Pudong International Airport subsidence measurement 

分 类 号：P64[天文地球—地质矿产勘探]