MMF-SAGA Soil Erosion Model

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

Description

Soil erosion modelling with a modified MMF (Morgan-Morgan-Finney) model (Morgan & Duzant 2008).
This tool 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

Parameters

Command Line

Usage: saga_cmd sim_erosion 0 [-DTM ] [-S ] [-CHANNEL ] [-PI ] [-CC ] [-PH ] [-EtEo ] [-GC ] [-D ] [-NV ] [-MS ] [-BD ] [-EHD ] [-LP ] [-PER_C ] [-PER_Z ] [-PER_S ] [-ST ] [-RFR ] [-TAB_METEO ] [-OUT_PATH ] [-INTERFLOW ] [-T ] [-TIMESPAN ] [-IF ] [-R ] [-I ] [-Rn ] [-KE_I_METHOD ] [-FLOWD_VA ] [-CHANNELTRANSPORT ] [-Q ] [-SL ] [-Rf ] [-KE ] [-Rc ] [-TCc ] [-TCz ] [-TCs ] [-Gc ] [-Gz ] [-Gs ] [-SLc ] [-SLz ] [-SLs ] [-TCONDc ] [-TCONDz ] [-TCONDs ] [-W_up ]
  -DTM:             	Digital Terrain Model
	grid, input
  -S:               	Slope
	grid, input
  -CHANNEL:         	Channel Network
	grid, input, optional
  -PI:              	Permament Interception
	grid, input
  -CC:              	Canopy Cover
	grid, input
  -PH:              	Plant Height
	grid, input
  -EtEo:            	Ratio Evapotranspiration
	grid, input
  -GC:              	Ground cover
	grid, input
  -D:               	Diameter plant elements
	grid, input
  -NV:              	Number plant elements
	grid, input
  -MS:              	Soil moisture (at FC)
	grid, input
  -BD:              	Bulk density top layer
	grid, input
  -EHD:             	Effective hydrological depth
	grid, input
  -LP:              	Sat. lateral permeability
	grid, input
  -PER_C:           	Percentage clays
	grid, input
  -PER_Z:           	Percentage silt
	grid, input
  -PER_S:           	Percentage sand
	grid, input
  -ST:              	Percentage rock fragments
	grid, input
  -RFR:             	Surface roughness
	grid, input, optional
  -TAB_METEO:       	Meteorological data
	table, input, optional
  -OUT_PATH:        	Output file path
	file path
  -INTERFLOW:       	Simulate Interflow
	boolean
	Default: 1
  -T:            	Mean temperature
	floating point number
	Default: 18.000000
  -TIMESPAN:        	Timespan (days)
	integer number
	Minimum: 1
	Maximum: 365
	Default: 30
  -IF:              	Interflow
	grid, output, optional
  -R:            	Rainfall
	floating point number
	Default: 200.000000
  -I:            	Rainfall intensity
	floating point number
	Default: 20.000000
  -Rn:           	Rainfall Duration
	floating point number
	Default: 20.000000
  -KE_I_METHOD:     	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:     	Flow Depth (actual flow velocity)
	floating point number
	Minimum: 0.000000
	Default: 0.005000
  -CHANNELTRANSPORT:	Route Soil along Channel Network
	boolean
	Default: 0
  -Q:               	Mean runoff
	grid, output
  -SL:              	Mean soil loss
	grid, output
  -Rf:              	Effective Rainfall
	grid, output
  -KE:              	Total Kinetic Energy
	grid, output
  -Rc:              	Soil moisture storage capacity
	grid, output
  -TCc:             	Transport Capacity Clay
	grid, output
  -TCz:             	Transport Capacity Silt
	grid, output
  -TCs:             	Transport Capacity Sand
	grid, output
  -Gc:              	Available Clay
	grid, output
  -Gz:              	Available Silt
	grid, output
  -Gs:              	Available Sand
	grid, output
  -SLc:             	Sediment Balance Clay
	grid, output
  -SLz:             	Sediment Balance Silt
	grid, output
  -SLs:             	Sediment Balance Sand
	grid, output
  -TCONDc:          	Transport Condition Clay
	grid, output
  -TCONDz:          	Transport Condition Silt
	grid, output
  -TCONDs:          	Transport Condition Sand
	grid, output
  -W_up:            	Upslope Flow Width
	grid, output