Research Article

Pre- and Postcollapse Ground Deformation Revealed by SAR Interferometry: A Case Study of Foshan (China) Ground Collapse

Figure 8

(a) Annual deformation velocity map and (b) its error distribution after the formation of the collapsed sinkhole. The red cross shows the reference point, the red star denotes the location of the collapse sinkhole, the white circles show the location of the metro station, and the blue double line indicates the metro line.
(a)
(b)