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The model STEP TRAMM was developed to simulate rainfall induced landslides in any catchment around the globe. These are the unique features of STEP TRAMM:

  • STEP TRAMM simulates landslide triggering as progressive failure of loaded soil columns interconnected by mechanical bonds
  • STEP TRAMM contains a graphical user interface to upload input information and specify system parameters

In- and Output of STEP TRAMM

To run STEP TRAMM, it requires input information on

  • elevation, vegetation pattern (forest coverage), soil textural class, rainfall

STEP TRAMM computes then

  • soil depth, discharge into river network, time and location of soil slides, runout pathways of released mass
Flow chart of model


In order to use the STEP TRAMM for Landslide Triggering model an account has to be requested at:

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