Module MMF-SAGA Soil Erosion Model

Soil erosion modelling with a modified MMF (Morgan-Morgan-Finney) model (Morgan & Duzant 2008).
This module is called MMF-SAGA because some things have been implemented differently compared to the original publication. The most important are:

• the extension of the model to support spatially distributed modelling
• the introduction of a "Channel Network" layer
• the introduction of a "rainfall duration" (time span) parameter
• the exposure of the flow depth parameter

• Author: (c) 2009-2012 V. Wichmann, M. Setiawan
• Specification: grid
• Menu: Simulation|Erosion

Parameters

Command-line

Usage: saga_cmd sim_erosion 0 -DTM <str> -S <str> [-CHANNEL <str>] -PI <str> -CC <str> -PH <str> -EtEo <str> -GC <str> -D <str> -NV <str> -MS <str> -BD <str> -EHD <str> -LP <str> -PER_C <str> -PER_Z <str> -PER_S <str> -ST <str> [-RFR <str>] [-TAB_METEO <str>] [-OUT_PATH <str>] [-INTERFLOW <str>] [-T <str>] [-TIMESPAN <num>] [-IF <str>] [-R <str>] [-I <str>] [-Rn <str>] [-KE_I_METHOD <str>] [-FLOWD_VA <str>] [-CHANNELTRANSPORT <str>] [-Q <str>] [-SL <str>] [-Rf <str>] [-KE <str>] [-Rc <str>] [-TCc <str>] [-TCz <str>] [-TCs <str>] [-Gc <str>] [-Gz <str>] [-Gs <str>] [-SLc <str>] [-SLz <str>] [-SLs <str>] [-TCONDc <str>] [-TCONDz <str>] [-TCONDs <str>] [-W_up <str>]
  -DTM:<str>             	Digital Terrain Model
	Grid (input)
  -S:<str>               	Slope
	Grid (input)
  -CHANNEL:<str>         	Channel Network
	Grid (optional input)
  -PI:<str>              	Permament Interception
	Grid (input)
  -CC:<str>              	Canopy Cover
	Grid (input)
  -PH:<str>              	Plant Height
	Grid (input)
  -EtEo:<str>            	Ratio Evapotranspiration
	Grid (input)
  -GC:<str>              	Ground cover
	Grid (input)
  -D:<str>               	Diameter plant elements
	Grid (input)
  -NV:<str>              	Number plant elements
	Grid (input)
  -MS:<str>              	Soil moisture (at FC)
	Grid (input)
  -BD:<str>              	Bulk density top layer
	Grid (input)
  -EHD:<str>             	Effective hydrological depth
	Grid (input)
  -LP:<str>              	Sat. lateral permeability
	Grid (input)
  -PER_C:<str>           	Percentage clays
	Grid (input)
  -PER_Z:<str>           	Percentage silt
	Grid (input)
  -PER_S:<str>           	Percentage sand
	Grid (input)
  -ST:<str>              	Percentage rock fragments
	Grid (input)
  -RFR:<str>             	Surface roughness
	Grid (optional input)
  -TAB_METEO:<str>       	Meteorological data
	Table (optional input)
  -OUT_PATH:<str>        	Output file path
	File path
  -INTERFLOW:<str>       	Simulate Interflow
	Boolean
	Default: 1
  -T:<str>               	Mean temperature
	Floating point
	Default: 18.000000
  -TIMESPAN:<num>        	Timespan (days)
	Integer
	Minimum: 1
	Maximum: 365
	Default: 30
  -IF:<str>              	Interflow
	Grid (optional output)
  -R:<str>               	Rainfall
	Floating point
	Default: 200.000000
  -I:<str>               	Rainfall intensity
	Floating point
	Default: 20.000000
  -Rn:<str>              	Rainfall Duration
	Floating point
	Default: 20.000000
  -KE_I_METHOD:<str>     	Relationship KE - I
	Choice
	Available Choices:
	[0] North America east of Rocky Mountains (Wischmeier & Smith 1978)
	[1] North-western Europe (Marshall & Palmer)
	[2] Mediterranean-type climates (Zanchi & Torri 1980)
	[3] Western Mediterranean (Coutinho & Tomas 1995)
	[4] Tropical climates (Hudson 1965)
	[5] Eastern Asia (Onaga et al. 1998)
	[6] Southern hemisphere climates (Rosewell 1986)
	[7] Bogor, West-Java, Indonesia (McISaac 1990)
	Default: 0
  -FLOWD_VA:<str>        	Flow Depth (actual flow velocity)
	Floating point
	Minimum: 0.000000
	Default: 0.005000
  -CHANNELTRANSPORT:<str>	Route Soil along Channel Network
	Boolean
	Default: 0
  -Q:<str>               	Mean runoff
	Grid (output)
  -SL:<str>              	Mean soil loss
	Grid (output)
  -Rf:<str>              	Effective Rainfall
	Grid (output)
  -KE:<str>              	Total Kinetic Energy
	Grid (output)
  -Rc:<str>              	Soil moisture storage capacity
	Grid (output)
  -TCc:<str>             	Transport Capacity Clay
	Grid (output)
  -TCz:<str>             	Transport Capacity Silt
	Grid (output)
  -TCs:<str>             	Transport Capacity Sand
	Grid (output)
  -Gc:<str>              	Available Clay
	Grid (output)
  -Gz:<str>              	Available Silt
	Grid (output)
  -Gs:<str>              	Available Sand
	Grid (output)
  -SLc:<str>             	Sediment Balance Clay
	Grid (output)
  -SLz:<str>             	Sediment Balance Silt
	Grid (output)
  -SLs:<str>             	Sediment Balance Sand
	Grid (output)
  -TCONDc:<str>          	Transport Condition Clay
	Grid (output)
  -TCONDz:<str>          	Transport Condition Silt
	Grid (output)
  -TCONDs:<str>          	Transport Condition Sand
	Grid (output)
  -W_up:<str>            	Upslope Flow Width
	Grid (output)