Tool Diffusive Hillslope Evolution (ADI)
Simulation of diffusive hillslope evolution using an Alternating-Direction-Implicit (ADI) method.
References
- Pelletier, J.D. (2008): Quantitative Modeling of Earth Surface Processes. Cambridge, 295p.
- Author: O.Conrad (c) 2013
- Menu: Simulation|Hillslope Evolution
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Channel Mask (*) | Grid (optional input) | CHANNELS | use a zero value for hillslopes, any other value for channel cells. | - |
| Output | Modelled Elevation | Grid (output) | MODEL | - | - |
| Elevation Difference (*) | Grid (optional output) | DIFF | - | - |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Update | Boolean | UPDATE | - | Default: 1 |
| Diffusivity [m2 / kyr] | Floating point | KAPPA | - | Minimum: 0.000000
Default: 10.000000 |
| Simulation Time [kyr] | Floating point | DURATION | - | Minimum: 0.000000
Default: 10000.000000 |
| Time Step | Choice | TIMESTEP | - | Available Choices:
[0] user defined
[1] automatically
Default: 0 |
| Time Step [kyr] | Floating point | DTIME | - | Minimum: 0.000000
Default: 1000.000000 |
| (*) optional |
Command-line
Usage: saga_cmd sim_qm_of_esp 4 [-DEM <str>] [-CHANNELS <str>] [-MODEL <str>] [-DIFF <str>] [-UPDATE <str>] [-KAPPA <double>] [-DURATION <double>] [-TIMESTEP <str>] [-DTIME <double>]
-DEM:<str> Elevation
Grid (input)
-CHANNELS:<str> Channel Mask
Grid (optional 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: 10.000000
-DURATION:<double> Simulation Time [kyr]
Floating point
Minimum: 0.000000
Default: 10000.000000
-TIMESTEP:<str> Time Step
Choice
Available Choices:
[0] user defined
[1] automatically
Default: 0
-DTIME:<double> Time Step [kyr]
Floating point
Minimum: 0.000000
Default: 1000.000000