The model STEP-TRAMM was developed to simulate the triggering of shallow landslides. As main difference to other models it incorporates progression of local failures in a chain reaction culminating into hazardous mass release. As model results time series of mass release are computed and maps of landslides and damage are provided.
The model computes localized landslides that can be linked as well to predictions of debris flow runout as shown in the figure below.
The model computes the hydro-mechanical response of a catchment (a few square kilometers in size) to an intense rainfall event (of several hours or days).