Digital Elevation Models (DEM) of the study area are acquired and analyzed using ArcGIS PRO thereby deriving the slope angle, flow direction, soil depth, aspect, geomorphology and so on. Soil properties are obtained using laboratory and field tests. Giving this DEM as input, a 3D slope stability analysis is carried out using the TRIGRS model. The model is modified to incorporate both saturated and unsaturated soil conditions. Also, the data available from the existing landslide monitoring systems deployed at the sites are incorporated into the model. The Factor of safety of slopes at different periods from the start of rainfall event will be mapped. Thus, this model can be used to forecast the spatiotemporal distribution of rainfall induced landslides thereby contributing towards the development of a more efficient landslide early warning system.
Name of the Indian Collaborators
