利用27景TerraSAR-X数据进行时序InSAR分析，获取武汉城区2013~2015年地面沉降监测结果，并结合地质、水文及实地踏勘资料进行沉降成因分析。结果表明，武汉城区地面沉降主要分布在汉口后湖、青山区工业路及光谷广场附近区域，最大沉降速率达78.1 mm/a；软土地基上大规模的城市建设引起的地下水位下降和荷载增加是造成沉降的主要原因。另外发现，长江沿岸地表形变与长江水位变化密切相关，初步推测与长江水位对两岸承压水的动态影响有关。

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.