Tool Flow Accumulation (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. & Reuter, H.I. [Eds.]: Geomorphometry: Concepts, Software, Applications. Developments in Soil Science, Elsevier, Bd.33, S.293-308. ResearchGate.

Author: O. Conrad (c) 2009
Menu: Terrain Analysis|Hydrology|Flow Accumulation|Alternatives

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	grid, input	`DEM`	-	-
Output	Flow Accumulation	grid, output	`AREA`	-	-
	Slope (*)	data object Grid, output, optional	`G_SLOPE`	-	-
	Aspect (*)	data object Grid, output, optional	`G_ASPECT`	-	-
	Flow Accumulation (*)	data object Grid, output, optional	`G_AREA`	-	-
	Flow Lines (*)	data object Shapes, output, optional	`G_FLOW`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	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 Grid, output, optional
  -B_ASPECT:<str>	Aspect
	boolean
	Default: 0
  -G_ASPECT:<str>	Aspect
	data object Grid, output, optional
  -B_AREA:<str>  	Flow Accumulation
	boolean
	Default: 0
  -G_AREA:<str>  	Flow Accumulation
	data object Grid, output, optional
  -B_FLOW:<str>  	Flow Lines
	boolean
	Default: 0
  -G_FLOW:<str>  	Flow Lines
	data object Shapes, output, optional