erosivFUN {soilassessment}

A function to estimate rainfall erosivity from annual rainfall amounts

Description

This function assumes an algebraic relationship between annual rainfall amounts and rainfall erosivity. The relationship has constants that may depend of certain regions.

Usage

erosivFUN(rain,A,B, model)

Arguments

rain

annual rainfall amounts in mm or Fourier index of rainfall

A

independent constant of the algebraic relationship between rainfall mounts and erosive energy (Energy=A+-B*rainfall)

B

rainfall coefficient of the algebraic relationship between rainfall mounts and erosive energy (Energy=A+-B*rainfall)

model

model defining the algebraic relationship between rainfall mounts and erosive energy. The model can be linear, power, logarithmic, Fourier, and exponential

Value

rainfall erosivity in MJ mm/ha/hr/yr

Author(s)

Christian Thine

References

Morgan RPC. 2005. Soil erosion and conservation. Blackwell. UK Benavidez R, Bethana J, Maxwell D, Norton K. 2018. A review of the (Revised) Universal Soil Loss Equation ((R)USLE): with a view to increasing its global applicability and improving soil loss estimates. Hydrol. Earth Syst. Sci., 22, 6059–6086

See Also

erodFUN, sloplenFUN

Examples

erosivFUN(587,151, 0.63, "linear")