Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China
The superimposed effects of sea level rise caused by global warming and land subsidence seriously threaten the sustainable development of coastal cities. In recent years, an important coastal city in China, Zhuhai, has been suffering from severe and widespread land subsidence; however, the character...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/9/2424 |
| _version_ | 1797601717063254016 |
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| author | Huimin Sun Hongxia Peng Min Zeng Simiao Wang Yujie Pan Pengcheng Pi Zixuan Xue Xinwen Zhao Ao Zhang Fengmei Liu |
| author_facet | Huimin Sun Hongxia Peng Min Zeng Simiao Wang Yujie Pan Pengcheng Pi Zixuan Xue Xinwen Zhao Ao Zhang Fengmei Liu |
| author_sort | Huimin Sun |
| collection | DOAJ |
| description | The superimposed effects of sea level rise caused by global warming and land subsidence seriously threaten the sustainable development of coastal cities. In recent years, an important coastal city in China, Zhuhai, has been suffering from severe and widespread land subsidence; however, the characteristics, triggers, and vulnerability assessment of ground subsidence in Zhuhai are still unclear. Therefore, we used the SBAS-InSAR technique to process 51 Sentinel-1A images to monitor the land subsidence in Zhuhai during the period from August 2016 to June 2019. The results showed that there was extensive land subsidence in the study area, with a maximum rate of −109.75 mm/yr. The surface had sequentially undergone a process of minor uplift and decline fluctuation, sharp settlement, and stable subsidence. The distribution and evolution of land subsidence were controlled by tectonic fractures and triggered by the thickness of soft soil, the intensity of groundwater development, and the seasonal changes of atmospheric precipitation. The comprehensive index method and the analytic hierarchy process were applied to derive extremely high subsidence vulnerability in several village communities and some traffic arteries in Zhuhai. Our research provides a theoretical basis for urban disaster prevention in Zhuhai and the construction planning of coastal cities around the world. |
| first_indexed | 2024-03-11T04:07:37Z |
| format | Article |
| id | doaj.art-18259052debc4b9d8cfd59b49da7f394 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T04:07:37Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-18259052debc4b9d8cfd59b49da7f3942023-11-17T23:40:00ZengMDPI AGRemote Sensing2072-42922023-05-01159242410.3390/rs15092424Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, ChinaHuimin Sun0Hongxia Peng1Min Zeng2Simiao Wang3Yujie Pan4Pengcheng Pi5Zixuan Xue6Xinwen Zhao7Ao Zhang8Fengmei Liu9School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, ChinaWuhan Center, China Geological Survey, Wuhan 430205, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110004, ChinaCollege of Environmental Sciences and Engineering, Peking University, Beijing 100871, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, ChinaWuhan Center, China Geological Survey, Wuhan 430205, ChinaWuhan Center, China Geological Survey, Wuhan 430205, ChinaWuhan Center, China Geological Survey, Wuhan 430205, ChinaThe superimposed effects of sea level rise caused by global warming and land subsidence seriously threaten the sustainable development of coastal cities. In recent years, an important coastal city in China, Zhuhai, has been suffering from severe and widespread land subsidence; however, the characteristics, triggers, and vulnerability assessment of ground subsidence in Zhuhai are still unclear. Therefore, we used the SBAS-InSAR technique to process 51 Sentinel-1A images to monitor the land subsidence in Zhuhai during the period from August 2016 to June 2019. The results showed that there was extensive land subsidence in the study area, with a maximum rate of −109.75 mm/yr. The surface had sequentially undergone a process of minor uplift and decline fluctuation, sharp settlement, and stable subsidence. The distribution and evolution of land subsidence were controlled by tectonic fractures and triggered by the thickness of soft soil, the intensity of groundwater development, and the seasonal changes of atmospheric precipitation. The comprehensive index method and the analytic hierarchy process were applied to derive extremely high subsidence vulnerability in several village communities and some traffic arteries in Zhuhai. Our research provides a theoretical basis for urban disaster prevention in Zhuhai and the construction planning of coastal cities around the world.https://www.mdpi.com/2072-4292/15/9/2424coastal citiesSBAS-InSARland subsidencetriggering factorsChina |
| spellingShingle | Huimin Sun Hongxia Peng Min Zeng Simiao Wang Yujie Pan Pengcheng Pi Zixuan Xue Xinwen Zhao Ao Zhang Fengmei Liu Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China Remote Sensing coastal cities SBAS-InSAR land subsidence triggering factors China |
| title | Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China |
| title_full | Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China |
| title_fullStr | Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China |
| title_full_unstemmed | Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China |
| title_short | Land Subsidence in a Coastal City Based on SBAS-InSAR Monitoring: A Case Study of Zhuhai, China |
| title_sort | land subsidence in a coastal city based on sbas insar monitoring a case study of zhuhai china |
| topic | coastal cities SBAS-InSAR land subsidence triggering factors China |
| url | https://www.mdpi.com/2072-4292/15/9/2424 |
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