Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data
Shanghai Lingang New City, located in the southeast corner of Shanghai, was constructed by land reclamation from 2002 to 2005, in an area where the geological structure is prone to subsidence over time. Firstly, we explore the spatio-temporal pattern of ground subsidence and its mechanism using the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/11/2693 |
| _version_ | 1797491816086372352 |
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| author | Yanling Chen Minyan Liao Jicang Wu Xiaobo Li Fuwen Xiong Shijie Liu Yongjiu Feng Xiaoya Wang |
| author_facet | Yanling Chen Minyan Liao Jicang Wu Xiaobo Li Fuwen Xiong Shijie Liu Yongjiu Feng Xiaoya Wang |
| author_sort | Yanling Chen |
| collection | DOAJ |
| description | Shanghai Lingang New City, located in the southeast corner of Shanghai, was constructed by land reclamation from 2002 to 2005, in an area where the geological structure is prone to subsidence over time. Firstly, we explore the spatio-temporal pattern of ground subsidence and its mechanism using the Persistent Scatterers Interferometric Synthetic Aperture Radar (PSInSAR) technique by processing 50 scenes of Sentinel-1A images acquired from May 2016 to May 2018. In order to assess the accuracy of PSInSAR derived deformation, we collect the first-class leveling data at two benchmarks located in the study area; the comparison between the two settlement indicates that the maximum difference is 1.93 mm and 2.9 mm, respectively, which validates the PSInSAR’s high accuracy. We then obtain the skeleton release coefficients by the joint analysis of PSInSAR measurements and groundwater level data. Finally, we find that this coastal area has undergone both elastic and inelastic deformation from 2016 to 2018. The outcome shows that the combination of different techniques is conductive to understand the deformation mechanism of the aquifer system in these coastal areas, which is expected to be a valuable reference for ground subsidence monitoring and groundwater extraction management. |
| first_indexed | 2024-03-10T00:54:42Z |
| format | Article |
| id | doaj.art-504a3c9a3e8f494fb64012e7a860c28e |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T00:54:42Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-504a3c9a3e8f494fb64012e7a860c28e2023-11-23T14:45:54ZengMDPI AGRemote Sensing2072-42922022-06-011411269310.3390/rs14112693Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level DataYanling Chen0Minyan Liao1Jicang Wu2Xiaobo Li3Fuwen Xiong4Shijie Liu5Yongjiu Feng6Xiaoya Wang7Shanghai Astronomical Observatory, Chinese Academy Sciences, Shanghai 200030, ChinaChongqing Institute of Geology and Mineral Resources, Chongqing 401120, ChinaCollege of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaShanghai Astronomical Observatory, Chinese Academy Sciences, Shanghai 200030, ChinaShanghai Institute of Geological Survey, Shanghai 200072, ChinaCollege of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaCollege of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaShanghai Astronomical Observatory, Chinese Academy Sciences, Shanghai 200030, ChinaShanghai Lingang New City, located in the southeast corner of Shanghai, was constructed by land reclamation from 2002 to 2005, in an area where the geological structure is prone to subsidence over time. Firstly, we explore the spatio-temporal pattern of ground subsidence and its mechanism using the Persistent Scatterers Interferometric Synthetic Aperture Radar (PSInSAR) technique by processing 50 scenes of Sentinel-1A images acquired from May 2016 to May 2018. In order to assess the accuracy of PSInSAR derived deformation, we collect the first-class leveling data at two benchmarks located in the study area; the comparison between the two settlement indicates that the maximum difference is 1.93 mm and 2.9 mm, respectively, which validates the PSInSAR’s high accuracy. We then obtain the skeleton release coefficients by the joint analysis of PSInSAR measurements and groundwater level data. Finally, we find that this coastal area has undergone both elastic and inelastic deformation from 2016 to 2018. The outcome shows that the combination of different techniques is conductive to understand the deformation mechanism of the aquifer system in these coastal areas, which is expected to be a valuable reference for ground subsidence monitoring and groundwater extraction management.https://www.mdpi.com/2072-4292/14/11/2693ground deformationPSInSARlevelinggroundwaterShanghai Lingang New City |
| spellingShingle | Yanling Chen Minyan Liao Jicang Wu Xiaobo Li Fuwen Xiong Shijie Liu Yongjiu Feng Xiaoya Wang Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data Remote Sensing ground deformation PSInSAR leveling groundwater Shanghai Lingang New City |
| title | Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data |
| title_full | Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data |
| title_fullStr | Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data |
| title_full_unstemmed | Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data |
| title_short | Elastic and Inelastic Ground Deformation in Shanghai Lingang Area Revealed by Sentinel-1, Leveling, and Groundwater Level Data |
| title_sort | elastic and inelastic ground deformation in shanghai lingang area revealed by sentinel 1 leveling and groundwater level data |
| topic | ground deformation PSInSAR leveling groundwater Shanghai Lingang New City |
| url | https://www.mdpi.com/2072-4292/14/11/2693 |
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