On the applicability of satellite SAR interferometry to
· The SRTM4 DEM with a resolution of 90 m in the background of Fig. 1 is applied to identify the geometric distortion area of SAR image and to remove the topographic phase during the InSAR processing. The landcover types and their proportions in Guizhou Province are shown in Fig. S1 in the supplementary information. The land cover type product has a resolution of 30 m (Gong et al. 2019).