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r.shalstab - A model for shallow landslide susceptibility.


raster, critical rainfall, landslide


r.shalstab --help
r.shalstab dem=name phy=name c_soil=name gamma=name z=name k=name [root=name] susceptibility=susceptibility critic_rain=critical rain [--overwrite] [--help] [--verbose] [--quiet] [--ui]


Allow output files to overwrite existing files
Print usage summary
Verbose module output
Quiet module output
Force launching GUI dialog


dem=name [required]
Name of input elevation raster map
phy=name [required]
Soil friction angle (angle)
c_soil=name [required]
Soil cohesion (N/m^2)
gamma=name [required]
Soil density(Kg/m^3)
z=name [required]
Vertical thickness of soil (m)
k=name [required]
hydraulic conductivity (m/h)
Root cohesion k (N/m^2)
susceptibility=susceptibility [required]
Name for output landslide susceptibility map (from 1 to 7)
critic_rain=critical rain [required]
Name for output critical rainfall map (mm/day)

Table of contents


r.shalstab allows to apply the algorithm developed by Montgomery and Dietrich (1994) in GRASS GIS. According to these authors, the models associate the theories of infinite slope, where the strength of soil share at the discretion of rupture of Mohr Coulomb, with the hydrological model O'Loughlin (1986), resulting in equation. Requested input and output.

The command requires some input:

The outputs are: A landslide susceptibility map (value range from 1 to 7): A map for of critical rainfall map (mm/day).


Andrea Filipello, University of Turin, Italy mail

Daniele Strigaro, University of Milan, Italy mail


Montgomery, D. R. and Dietrich, W. E.: A physically based model for the topographic control of shallow landsliding,Water Resour. Res., 30, 1153-1171, 1994.


Available at: r.shalstab source code (history)

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