International journal of applied earth observation and geoinformation2019，Vol.8210.DOI:10.1016/j.jag.2019.05.019

Land subsidence in Beijing and its relationship with geological faults revealed by Sentinel-1 InSAR observations

Hu, Leyin Dai, Keren Xing, Chengqi Li, Zhenhong Tomas, Roberto Clark, Beth Shi, Xianlin Chen, Mi Zhang, Rui Qiu, Qiang Lu, Yajun
International journal of applied earth observation and geoinformation2019，Vol.8210.DOI:10.1016/j.jag.2019.05.019
✕
  • NSTL
  • Elsevier

Land subsidence in Beijing and its relationship with geological faults revealed by Sentinel-1 InSAR observations

Hu, Leyin 1Dai, Keren 2Xing, Chengqi 1Li, Zhenhong 3Tomas, Roberto 4Clark, Beth 5Shi, Xianlin 6Chen, Mi 7Zhang, Rui 8Qiu, Qiang 9Lu, Yajun10
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作者信息

  • 1. Beijing Earthquake Agcy, Beijing 100080, Peoples R China
  • 2. Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenviroment P, Chengdu 610059, Sichuan, Peoples R China
  • 3. Newcastle Univ, COMET, Sch Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
  • 4. Univ Alicante, Escuela Politecn Super, Dept Ingn Civil, POB 99, E-03080 Alicante, Spain
  • 5. Newcastle Univ, Sch Nat & Environm Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
  • 6. Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Sichuan, Peoples R China
  • 7. Capital Normal Univ, Coll Resources Environm & Tourism, Beijing 10048, Peoples R China
  • 8. Southwest Jiaotong Univ, Dept Remote Sensing & Geospatial Informat Engn, Chengdu 610031, Sichuan, Peoples R China
  • 9. Nanyang Technol Univ, Earth Observ Singapore, Singapore 639798, Singapore
  • 10. Changping Earthquake Monitoring Stn Beijing Earth, Beijing 102209, Peoples R China
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Abstract

Beijing, the capital city of China, has been affected by land subsidence due to intensive groundwater extraction since 1935. Recent studies reported that the maximum subsidence occurred in the east of Beijing, reaching more than 11 cm/year till 2017. To investigate the subsidence (2015(similar to)2017) in Beijing, in this paper, time series interferometric synthetic aperture radar (TS-InSAR) analysis was performed with 22 Sentinel-1 Terrain Observation by Progressive Scans (TOPS) mode SAR data. Results show that wide areas in the east of Beijing are subsiding with a maximum rate of 14 cm/year, which is consistent with GPS data. Detailed analysis of the obtained subsidence map reveals the existence of several characteristic near-linear boundaries within the subsiding areas. As a result of our previous three-year project, we generated the exact location, direction, and late Quaternary activity of the main potential active faults in the Beijing area. The relationship between the trace of these existing geological faults and the mentioned subsidence boundaries was investigated in detail. It is suggested that land subsidence in Beijing was mainly caused by the over-extraction of groundwater, with its spatial pattern being controlled by geological faults.

Key words

InSAR/Sentinel-1 TOPS data/Beijing land subsidence/Geological faults

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出版年

2019
International journal of applied earth observation and geoinformation

International journal of applied earth observation and geoinformation

SCI
ISSN：0303-2434
被引量24
参考文献量49
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