Module Flow Width and Specific Catchment Area
Flow width and specific catchment area (SCA) calculation.
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, 33:293-308.
Quinn, P.F., Beven, K.J., Chevallier, P., Planchon, O. (1991): The prediction of hillslope flow paths for distributed hydrological modelling using digital terrain models. Hydrological Processes, 5:59-79
- Author: O. Conrad (c) 2009
- Specification: grid
- Menu: Terrain Analysis|Hydrology|Flow Accumulation
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Total Catchment Area (TCA) (*) | Grid (optional input) | TCA | - | - |
| Output | Flow Width | Grid (output) | WIDTH | - | - |
| Specific Catchment Area (SCA) (*) | Grid (optional output) | SCA | - | - |
| Options | Method | Choice | METHOD | - | Available Choices:
[0] Deterministic 8
[1] Multiple Flow Direction (Quinn et al. 1991)
[2] Aspect
Default: 2 |
| (*) optional |
Command-line
Usage: saga_cmd ta_hydrology 19 [-DEM <str>] [-WIDTH <str>] [-TCA <str>] [-SCA <str>] [-METHOD <str>]
-DEM:<str> Elevation
Grid (input)
-WIDTH:<str> Flow Width
Grid (output)
-TCA:<str> Total Catchment Area (TCA)
Grid (optional input)
-SCA:<str> Specific Catchment Area (SCA)
Grid (optional output)
-METHOD:<str> Method
Choice
Available Choices:
[0] Deterministic 8
[1] Multiple Flow Direction (Quinn et al. 1991)
[2] Aspect
Default: 2