infiltration {topmodel}

Infiltration routine of TOPMODEL

Description

Infiltration routine used in TOPMODEL, based on the Green-Ampt model.

Usage

  infiltration(rain, parameters)

Arguments

rain

A vector of rain data (m per timestep)

parameters

A vector containing 3 parameters (see below for the exact structure)

Details

This function gives direct access to the infiltration routine implemented in topmodel(). The function needs three parameters: c(dt, CD, K0, m), where:

dt	The timestep (hours)
CD	capillary drive, see Morel-Seytoux and Khanji (1974)
K0	Surface hydraulic conductivity (m/h)
m	Model parameter controlling the rate of decline of transmissivity in the soil profile, see Beven, 1984

Value

The function returns a vector with the same length as the input vector rain representing infiltration.

Author(s)

Wouter Buytaert, Imperial College London, based on original FORTRAN code from Lancaster University

References

Morel-Seytoux, H.J., Khanji, J., 1974. Derivation of an Equation of Infiltration. Water Resources Research, 10, 795-800. Beven, K., 1984. Infiltration into a Class of Vertically Non-Uniform Soils. Hydrological Sciences Journal 29, 425-434.

See also https://github.com/ICHydro/topmodel for examples.

See Also

topmodel