Downslope Distance Gradient
- Author: O.Conrad (c) 2006
- Menu: Terrain Analysis | Morphometry
Description
Calculation of a new topographic index to quantify downslope controls on local drainage.
References
- Hjerdt, K.N., McDonnell, J.J., Seibert, J. Rodhe, A. (2004): A new topographic index to quantify downslope controls on local drainage.. Water Resources Research, 40. doi:10.1029/2004WR003130.
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | grid, input | DEM | - | - |
| Output | Gradient | grid, output | GRADIENT | - | - |
| Gradient Difference | grid, output, optional | DIFFERENCE | Difference to local gradient. | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Vertical Distance | floating point number | DISTANCE | - | Minimum: 0.000000
Default: 10.000000 |
| Output | choice | OUTPUT | - | Available Choices:
[0] distance
[1] gradient (tangens)
[2] gradient (degree)
Default: 2 |
Command Line
Usage: saga_cmd ta_morphometry 9 [-DEM ] [-GRADIENT ] [-DIFFERENCE ] [-DISTANCE ] [-OUTPUT ]
-DEM: Elevation
grid, input
-GRADIENT: Gradient
grid, output
-DIFFERENCE: Gradient Difference
grid, output, optional
-DISTANCE: Vertical Distance
floating point number
Minimum: 0.000000
Default: 10.000000
-OUTPUT: Output
choice
Available Choices:
[0] distance
[1] gradient (tangens)
[2] gradient (degree)
Default: 2