Mine Subsidence Monitoring by Differential InSAR

In this study, two-pass differential InSAR technique was used to monitor ground subsidence. JERS-1 L-band SAR imagery, acquired from December 1992 to May 1998, was selected as experimental data. 6 interferometric pairs were selected, and 4 subsidence bowls were found in the research area. Based on the temporal series of height change map, maximal vertical subsidence rate of two bowls was obtained. The studies show that DInSAR technique has great potential in ground subsidence monitoring.