SSgampt: A Green-Ampt water infiltration model

In HydroMe: Estimating Water Retention and Infiltration Model Parameters using Experimental Data

A Green-Ampt water infiltration model

Description

This is a two- parameter function to determine water infiltration parameters contained in the Green-Ampt infiltration model

Usage

SSgampt(input, ks, A)

Arguments

input	Instantaneous infiltration rate
ks	Saturated hydraulic conductivity
A	Constant incorporating matric suction potential, wetting front, and antecedent moisture content

Details

This is a self-starting model for estimating Green-Ampt infiltration model using instantaneous and cumulative infiltration data

Value

A list of objects returned by standard R regression functions such as nls and lm

Author(s)

Christian Thine Omuto

References

Green WA and Ampt GA. 1911. Studies on soil physics: 1. The flow of air and water through soils. Journal of Agricultural Science 4: 1-24

See Also

SSphilip, SShorton

Examples

## Load the data
data(infilt)
library(minpack.lm)
gamp.ns <- nlsLM(Cumrate ~ SSgampt(Rate,ks,A), infilt)
summary(gamp.ns)

HydroMe documentation built on May 29, 2024, 9:35 a.m.