Infiltration routine used in TOPMODEL, based on the Green-Ampt model.
infiltration(rain, parameters)A vector of rain data (m per timestep)
A vector containing 3 parameters (see below for the exact structure)
The function returns a vector with the same length as the input vector rain representing infiltration.
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 |
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 http://paramo.cc.ic.ac.uk/topmodel_tutorial for examples.