Soil infiltration functions:
Function hydrology_infiltrationBoughton calculates the amount of water that infiltrates into the topsoil, according to the USDA SCS curve number method (Boughton 1989).
Function hydrology_infiltrationGreenAmpt calculates the amount of water that infiltrates into the topsoil, according to the model by Green & Ampt (1911).
Function hydrology_infiltrationAmount uses either Green & Ampt (1911) or Boughton (1989) to estimate infiltration.
Function hydrology_infiltrationRepartition distributes infiltration among soil layers depending on macroporosity.
hydrology_infiltrationBoughton(input, Ssoil)
hydrology_infiltrationGreenAmpt(t, psi_w, Ksat, theta_sat, theta_dry)
hydrology_infiltrationRepartition(I, dVec, macro, a = -0.005, b = 3)
hydrology_infiltrationAmount(
rainfallInput,
rainfallIntensity,
soil,
soilFunctions,
model = "GreenAmpt1911",
K_correction = 1
)A numeric vector of (daily) water input (in mm of water).
Soil water storage capacity (can be referred to topsoil) (in mm of water).
Time of the infiltration event
Matric potential at the wetting front
hydraulic conductivity at saturation
volumetric content at saturation
volumetric content at the dry side of the wetting front
Soil infiltration (in mm of water).
Width of soil layers (in mm).
Macroporosity of soil layers (in %).
Parameters of the extinction function used for water infiltration.
Water from the rainfall event reaching the soil surface (mm)
rainfall intensity rate (mm/h)
A list containing the description of the soil (see soil).
Soil water retention curve and conductivity functions, either 'SX' (for Saxton) or 'VG' (for Van Genuchten).
Infiltration model, either "GreenAmpt1911" or "Boughton1989"
Correction for saturated conductivity, to account for increased infiltration due to macropore presence
Functions hydrology_infiltrationBoughton, hydrology_infiltrationGreenAmpt and hydrology_infiltrationAmount
return the daily amount of water that infiltrates into the soil (in mm of water).
Function hydrology_infiltrationRepartition returns the amount of infiltrated water that reaches each soil layer.
When using function hydrology_infiltrationGreenAmpt, the units of Ksat, t and psi_wat have to be in the same system (e.g. cm/h, h and cm).
Boughton (1989). A review of the USDA SCS curve number method. - Australian Journal of Soil Research 27: 511-523.
Green, W.H. and Ampt, G.A. (1911) Studies on Soil Physics, 1: The Flow of Air and Water through Soils. The Journal of Agricultural Science, 4, 1-24.