Flow Accumulation (QM of ESP)
- Author: O.Conrad (c) 2013
- Menu: Terrain Analysis | Hydrology | Flow Accumulation | Alternatives
Description
Calculation of flow accumulation, aka upslope contributing area, with the multiple flow direction method after Freeman (1991).
This tool implements suggested code examples from the text book Quantitative Modeling of Earth Surface Processes (Pelletier 2008) and serves as demonstration on code adaptions for the SAGA API. Note that this tool may be of limited use for operational purposes!
References
- Freeman, G.T. (1991): Calculating catchment area with divergent flow based on a regular grid. Computers and Geosciences, 17:413-22. doi:10.1016/0098-3004(91)90048-I.
- Pelletier, J.D. (2008): Quantitative Modeling of Earth Surface Processes. Cambridge, 295p. doi:10.1017/CBO9780511813849.
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | DEM | grid, input | DEM | - | - |
| Output | Contributing Area | grid, output | FLOW | - | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Preprocessing | choice | PREPROC | - | Available Choices: [0] none [1] fill sinks temporarily [2] fill sinks permanently Default: 1 | |
| Fill Increment | floating point number | DZFILL | - | Minimum: 0.000000 Default: 0.010000 |
Command Line
Usage: saga_cmd sim_qm_of_esp 2 [-DEM] [-FLOW ] [-PREPROC ] [-DZFILL ] -DEM: DEM grid, input -FLOW: Contributing Area grid, output -PREPROC: Preprocessing choice Available Choices: [0] none [1] fill sinks temporarily [2] fill sinks permanently Default: 1 -DZFILL: Fill Increment floating point number Minimum: 0.000000 Default: 0.010000