Figure 2From: Co-seismic landslide topographic analysis based on multi-temporal DEM—A case study of the Wenchuan earthquakeTopographic features of Site I. The roughness (a), hillslope (b), slope aspect (c) distribution of Site I based on pre-earthquake DEM data; and the intersection region of the above three regions (d) by applying thredholds >1.2 (a), >30 (b) and between 90 and 270 (c). The maps show the landslide mainly occurred in the derived regions.Back to article page