DSD0 {ConFluxPro}R Documentation

Calculate DSD0

Description

Different functions to estimate soil diffusivity from the air-filled pore space.

Usage

DSD0_millington_quirk(AFPS, TPS = NULL, tortuosity = NULL)

DSD0_moldrup(AFPS, AFPS_100, b_campbell)

DSD0_currie(AFPS, a_currie = 1.9, b_currie = 1.4)

DSD0_linear(AFPS, a_lin, b_lin)

Arguments

AFPS

The air-filled porosity.

TPS

Total pore space

tortuosity

the tortuosity of the soil

AFPS_100

Air filled porosity at -100cm soil water matric head.

b_campbell

Campbell (1974) PSD index

a_currie, b_currie

fit parameter of Currie-style models

a_lin, b_lin

linear model coefficients

Details

Value

A numeric vector of DSD0.

References

Millington, R. J., & Quirk, J. P. (1961). Permeability of porous solids. In Transactions of the Faraday Society (Vol. 57, p. 1200). Royal Society of Chemistry (RSC). https://doi.org/10.1039/tf9615701200

Moldrup, P., Olesen, T., Schjønning, P., Yamaguchi, T., & Rolston, D. E. (2000). Predicting the Gas Diffusion Coefficient in Undisturbed Soil from Soil Water Characteristics. In Soil Science Society of America Journal (Vol. 64, Issue 1, pp. 94–100). Wiley. https://doi.org/10.2136/sssaj2000.64194x

Currie, J. A. (1960). Gaseous diffusion in porous media. Part 2. - Dry granular materials. In British Journal of Applied Physics (Vol. 11, Issue 8, pp. 318–324). IOP Publishing. https://doi.org/10.1088/0508-3443/11/8/303

Troeh, F. R., Jabro, J. D., & Kirkham, D. (1982). Gaseous diffusion equations for porous materials. In Geoderma (Vol. 27, Issue 3, pp. 239–253). Elsevier BV. https://doi.org/10.1016/0016-7061(82)90033-7

Examples

DSD0_millington_quirk(0.2, 0.6)
DSD0_moldrup(0.2, 0.6, 1)
DSD0_currie(0.2)
DSD0_linear(0.2, a_lin = 1.4, b_lin = 0)


[Package ConFluxPro version 1.3.1 Index]