watem_tc: Transport capacity

In atsyplenkov/rusleR: Universal Soil Loss Equation Estimation

Transport capacity

Description

Transport capacity (kg·m^{−1}·yr^{−1}) per unit width of the grid cells is assumed to be proportional to the potential to rill erosion, which is described by a power function of slope length and gradient (Van Rompaey et al., 2001).

Usage

watem_tc(.dem, .ls, .r_factor, .k_factor, .ktc, saga_obj = saga)

Arguments

.dem	SpatRaster. A single layer with elevation values. Values should have the same unit as the map units, or in meters when the crs is longitude/latitude.
.ls	SpatRaster. An output from ls_2d
.r_factor	SpatRaster or Numeric. Rainfall erosivity from RUSLE but divided by 10000 to get MJ·mm·m^{−2}·h^{−1}·yr^{−1}.
.k_factor	SpatRaster or Numeric. Soil erodibility from RUSLE but multiplied by 1000 to get kg·h·MJ^{−1}·mm^{−1}.
.ktc	SpatRaster. Tranport capacity coefficient K_{TC}. An output from watem_ktc
saga_obj	SAGA-GIS geoprocessor object from saga_gis with raster_backend = "terra"

Value

SpatRaster

References

Van Rompaey, A., Verstraeten, G., Van Oost, K., Govers, G., and Poesen, J.: Modelling mean annual sediment yield using a distributed approach, Earth Surf. Proc. Land., 26, 1221–1236, https://doi.org/10.1002/esp.275, 2001.

atsyplenkov/rusleR documentation built on Feb. 24, 2023, 9:04 a.m.