Abstract：This paper uses time series InSAR to obtain ground deformation results from 2013 to 2015 in the Wuhan urban area with 27 TerraSAR-X images. The InSAR results show that the ground subsidence mainly lies in Houhu area, Gongye road and Optics Valley square. The maximum subsidence rate is up to 78.1 mm/a. Analysis of geological data and field investigation show that the subsidence is mainly caused by the hydraulic head drop and loading increasing due to large-scale urban construction on the soft soils foundation. Additionally, a strong correlation is highlighted between the deformation in the bank of Yangtze river and the water level records of the Yangtze river, implying that this previously unknown deformation phenomenon is likely related to seasonal influence of water levels in the Yangtze river on the confined groundwater in the bank areas.
BAI Lin,JIANG Liming,WANG Hansheng. Monitoring Ground Subsidence in Wuhan City with High-Resolution TerraSAR-X Images from 2013 to 2015[J]. jgg, 2019, 39(8): 832-836.
