Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry
Revealing the land subsidence in Beijing, China, induced by the massive groundwater extraction in the past three decades, is important to mitigate the hazards and protect the residences and infrastructure. Many SAR (Synthetic Aperture Radar) datasets have been successfully applied to reveal the land...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/14/3665 |
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| author | Yakun Han Tao Li Keren Dai Zhong Lu Xinzhe Yuan Xianlin Shi Chen Liu Ningling Wen Xi Zhang |
| author_facet | Yakun Han Tao Li Keren Dai Zhong Lu Xinzhe Yuan Xianlin Shi Chen Liu Ningling Wen Xi Zhang |
| author_sort | Yakun Han |
| collection | DOAJ |
| description | Revealing the land subsidence in Beijing, China, induced by the massive groundwater extraction in the past three decades, is important to mitigate the hazards and protect the residences and infrastructure. Many SAR (Synthetic Aperture Radar) datasets have been successfully applied to reveal the land subsidence over Beijing in previous research, while few works were achieved on land subsidence revealed by time-series InSAR (Interferometric Synthetic Aperture Radar) with Gaofen-3 SAR images. In this study, we successfully perform the time-series InSAR analysis with Gaofen-3 SAR images to extract the land subsidence in Beijing from 2020 to 2021. The Sentinel-1 SAR images were used to assess the accuracy of Gaofen-3 images. The subsidence scale and extent are consistent in detected major subsidence bowls between the two datasets. The spatial–temporal evolution and the deceleration of Beijing land subsidence were revealed by comparing with the Sentinel-1 results from 2017 to 2020. Moreover, we evaluated the interferometric performance of Gaofen-3 satellite SAR imagery and analyzed the main factors that mostly influence the coherence and quality of interferograms. Our results proved that the long perpendicular baselines decrease the coherence seriously over the study area, and the artifacts induced by inaccurate orbit information reduce the quality of the Gaofen-3 interferograms. Refining and removing the two main artifacts could improve the quality of interferograms formed by Gaofen-3 SAR images. |
| first_indexed | 2024-03-11T00:40:47Z |
| format | Article |
| id | doaj.art-2c1849eb4cfe4a48ba48e38c479f2ad4 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T00:40:47Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-2c1849eb4cfe4a48ba48e38c479f2ad42023-11-18T21:13:59ZengMDPI AGRemote Sensing2072-42922023-07-011514366510.3390/rs15143665Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series InterferometryYakun Han0Tao Li1Keren Dai2Zhong Lu3Xinzhe Yuan4Xianlin Shi5Chen Liu6Ningling Wen7Xi Zhang8College of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaLand Satellite Remote Sensing Application Center, Ministry of Natural Resources of China, Beijing 100048, ChinaCollege of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaHuffington Department of Earth Sciences, Southern Methodist University, Dallas, TX 75275, USANational Satellite Ocean Application Service, Beijing 100081, ChinaCollege of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaCollege of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaCollege of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaCollege of Earth Science, Chengdu University of Technology, Chengdu 610059, ChinaRevealing the land subsidence in Beijing, China, induced by the massive groundwater extraction in the past three decades, is important to mitigate the hazards and protect the residences and infrastructure. Many SAR (Synthetic Aperture Radar) datasets have been successfully applied to reveal the land subsidence over Beijing in previous research, while few works were achieved on land subsidence revealed by time-series InSAR (Interferometric Synthetic Aperture Radar) with Gaofen-3 SAR images. In this study, we successfully perform the time-series InSAR analysis with Gaofen-3 SAR images to extract the land subsidence in Beijing from 2020 to 2021. The Sentinel-1 SAR images were used to assess the accuracy of Gaofen-3 images. The subsidence scale and extent are consistent in detected major subsidence bowls between the two datasets. The spatial–temporal evolution and the deceleration of Beijing land subsidence were revealed by comparing with the Sentinel-1 results from 2017 to 2020. Moreover, we evaluated the interferometric performance of Gaofen-3 satellite SAR imagery and analyzed the main factors that mostly influence the coherence and quality of interferograms. Our results proved that the long perpendicular baselines decrease the coherence seriously over the study area, and the artifacts induced by inaccurate orbit information reduce the quality of the Gaofen-3 interferograms. Refining and removing the two main artifacts could improve the quality of interferograms formed by Gaofen-3 SAR images.https://www.mdpi.com/2072-4292/15/14/3665interferometric performanceGaofen-3InSARsubsidenceBeijing |
| spellingShingle | Yakun Han Tao Li Keren Dai Zhong Lu Xinzhe Yuan Xianlin Shi Chen Liu Ningling Wen Xi Zhang Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry Remote Sensing interferometric performance Gaofen-3 InSAR subsidence Beijing |
| title | Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry |
| title_full | Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry |
| title_fullStr | Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry |
| title_full_unstemmed | Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry |
| title_short | Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry |
| title_sort | revealing the land subsidence deceleration in beijing china by gaofen 3 time series interferometry |
| topic | interferometric performance Gaofen-3 InSAR subsidence Beijing |
| url | https://www.mdpi.com/2072-4292/15/14/3665 |
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