SAGA-GIS Tool Library Documentation (v7.2.0)

Tool Diffusive Hillslope Evolution (FTCS)

Simulation of diffusive hillslope evolution using a Forward-Time-Centered-Space (FTCS) method.


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid (input)DEM--
OutputModelled ElevationGrid (output)MODEL--
Elevation Difference (*)Grid (optional output)DIFF--
OptionsGrid systemGrid systemPARAMETERS_GRID_SYSTEM--
UpdateBooleanUPDATE-Default: 1
Diffusivity [m2 / kyr]Floating pointKAPPA-Minimum: 0.000000
Default: 1.000000
Simulation Time [kyr]Floating pointDURATION-Minimum: 0.000000
Default: 100.000000
Time StepChoiceTIMESTEP-Available Choices:
[0] user defined
[1] automatically
Default: 1
Time Step [kyr]Floating pointDTIME-Minimum: 0.000000
Default: 10.000000
NeighbourhoodChoiceNEIGHBOURS-Available Choices:
[0] Neumann
[1] Moore
Default: 1
(*) optional

Command-line

Usage: saga_cmd sim_qm_of_esp 0 [-DEM <str>] [-MODEL <str>] [-DIFF <str>] [-UPDATE <str>] [-KAPPA <double>] [-DURATION <double>] [-TIMESTEP <str>] [-DTIME <double>] [-NEIGHBOURS <str>]
  -DEM:<str>        	Elevation
	Grid (input)
  -MODEL:<str>      	Modelled Elevation
	Grid (output)
  -DIFF:<str>       	Elevation Difference
	Grid (optional output)
  -UPDATE:<str>     	Update
	Boolean
	Default: 1
  -KAPPA:<double>   	Diffusivity [m2 / kyr]
	Floating point
	Minimum: 0.000000
	Default: 1.000000
  -DURATION:<double>	Simulation Time [kyr]
	Floating point
	Minimum: 0.000000
	Default: 100.000000
  -TIMESTEP:<str>   	Time Step
	Choice
	Available Choices:
	[0] user defined
	[1] automatically
	Default: 1
  -DTIME:<double>   	Time Step [kyr]
	Floating point
	Minimum: 0.000000
	Default: 10.000000
  -NEIGHBOURS:<str> 	Neighbourhood
	Choice
	Available Choices:
	[0] Neumann
	[1] Moore
	Default: 1