The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLIII-B3-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2020, 299–304, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-299-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2020, 299–304, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-299-2020

  21 Aug 2020

21 Aug 2020

LAND SUBSIDENCE MONITORING IN DEZHOU CITY BASED ON SBAS-INSAR TECHNOLOGY

G. Huang1,2, H. Fan1,2, L. Lu2, and W. Yu1,2 G. Huang et al.
  • 1Shandong University of Science and Technology, Qingdao, China
  • 2Key Laboratory of Surveying and Mapping Science and Geospatial Information Technology, Chinese Academy of Surveying and Mapping, Beijing, China

Keywords: Interferometric Synthetic Aperture Radar, Sentinel-1A, Small Baseline Subset, Dezhou, Land Subsidence Monitoring

Abstract. To monitor the large area land subsidence in Dezhou city, Shandong province, China. This paper uses 23 scenes of Sentinel-1A radar images from August 2017 to February 2019, and based on small baseline subset (SBAS) technology to obtain the subsidence information in Dezhou urban area. The monitoring results show that: Dezhou city has a serious subsidence phenomenon in large coverage area. A subsidence funnel with Chenzhuang as the center was formed. The average annual subsidence rate (along the vertical direction) of the subsidence center exceeded 45 mm/yr. There was also a serious subsidence phenomenon in the eastern and northeastern parts of the urban area, and there was a tendency of forming a whole area. After detailed data analysis, it is found that the ground subsidence presents seasonal characteristics closely related to the groundwater level and is affected by large-scale engineering construction on the surface.