Module Catchment Area (Mass-Flux Method)
The Mass-Flux Method (MFM) for the DEM based calculation of flow accumulation as proposed by Gruber and Peckham (2008).
!!!UNDER DEVELOPMENT!!! To be done: solving the streamline resolution problem
References:
Gruber, S., Peckham, S. (2008): Land-Surface Parameters and Objects in Hydrology. In: Hengl, T. and Reuter, H.I. [Eds.]: Geomorphometry: Concepts, Software, Applications. Developments in Soil Science, Elsevier, Bd.33, S.293-308.
- Author: O. Conrad (c) 2009
- Specification: grid
- Menu: Terrain Analysis|Hydrology|Catchment Area
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Output | Flow Accumulation | Grid (output) | AREA | - | - |
| Slope (*) | Data Object (optional output) | G_SLOPE | - | - | |
| Aspect (*) | Data Object (optional output) | G_ASPECT | - | - | |
| Flow Accumulation (*) | Data Object (optional output) | G_AREA | - | - | |
| Flow Lines (*) | Data Object (optional output) | G_FLOW | - | - | |
| Options | Flow Split Method | Choice | METHOD | - | Available Choices: [0] flow width (original) [1] cell area Default: 0 |
| Slope | Boolean | B_SLOPE | - | Default: 0 | |
| Aspect | Boolean | B_ASPECT | - | Default: 0 | |
| Flow Accumulation | Boolean | B_AREA | - | Default: 0 | |
| Flow Lines | Boolean | B_FLOW | - | Default: 0 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd ta_hydrology 18 -DEM <str> [-AREA <str>] [-METHOD <str>] [-B_SLOPE <str>] [-G_SLOPE <str>] [-B_ASPECT <str>] [-G_ASPECT <str>] [-B_AREA <str>] [-G_AREA <str>] [-B_FLOW <str>] [-G_FLOW <str>] -DEM:<str> Elevation Grid (input) -AREA:<str> Flow Accumulation Grid (output) -METHOD:<str> Flow Split Method Choice Available Choices: [0] flow width (original) [1] cell area Default: 0 -B_SLOPE:<str> Slope Boolean Default: 0 -G_SLOPE:<str> Slope Data Object (optional output) -B_ASPECT:<str> Aspect Boolean Default: 0 -G_ASPECT:<str> Aspect Data Object (optional output) -B_AREA:<str> Flow Accumulation Boolean Default: 0 -G_AREA:<str> Flow Accumulation Data Object (optional output) -B_FLOW:<str> Flow Lines Boolean Default: 0 -G_FLOW:<str> Flow Lines Data Object (optional output)