HydroMe-package {HydroMe}R Documentation

A package for the estimation of soil hydraulic parameters using experimental data

Description

This package uses experimental data for either infiltration or water retention and estimates hydraulic parameters contained in common infiltration and water retention models in soil science. The models considered include Philip's, Horton, and Green-Ampt among the infiltration functions and the van Genuchten, Brooks-Corey, Campbell, and Gardner's models among the water retention functions. The parameters of these functions are obtained by analytical curve-fitting method

Details

The functions are selfstarting but use nlme library for parameter estimation. They are coded as follows: SSphilip, SShort, and SSGampt, respectively for the Philip's, Horton's, and Green-Ampt's infiltration functions and SSvan, SSbrook, SScamp, and SSgard, respectively for the van Genuchten's, Brooks-Corey's, Campbell's, Gardner's, and new Biexponential models for water retention functions. The van Genuchten model is one in which m is 1 less the inverse of n

Author(s)

Omuto, Christian Thine

Maintainer: Omuto Christian Thine <thineomuto@yahoo.com>

References

Omuto, C.T. and Gumbe, L.O., 2007 R codes for estimating water infiltration and retention parameters using mixed-effects Computers and Geosciences -Submitted


[Package HydroMe version 1.0 Index]