IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE Landslide Boundary -4 (cm) 0 4 P1 P3 P2 N 0 Xinmo Village 200 400 (m) (a) (c) P1 Failure at 20170624 Accelerating From 20170526 P3 Measured Displacement Displacement Trends (e) -4 20151109 20160216 20160525 20160901 20161209 20170318 20170619 -3 -2 -1 0 (d) -4 20151109 20160216 20160525 20160901 20161209 20170318 -3 -2 -1 0 20151109 20160216 20160525 20160901 20161209 20170318 1 P2 -3 -2 -1 0 FIGURE 2. The prefailure movement signals and source area revealed by InSAR. (a) The cumulative displacements for coherent pixels from time-series InSAR analysis. (Source: Google Earth; used with permission.) (b) The enlarged active displacement area and the location of points P1, P2, and P3 are presented. The displacement time series for points (c) P1, (d) P2, and (e) P3, respectively, are shown. (b) Accumulated Displacement (cm) Accumulated Displacement (cm) Accumulated Displacement (cm) 140 MARCH 2020