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)