Third-order Integral Relation Between Sorptivity and Soil Water Diffusivity Using Brutsaert's Technique
1980
Parlange, J.-Y. | Braddock, R. D. | Lisle, I.
Integral relationships between sorptivity and weighted mean diffusivity have been usually justified by numerical tests. Optimization provides a justification on more fundamental ground, when diffusivity increases rapidly with water content. The present paper presents a further improvement on the optimization result and its precision is discussed for two general classes of soil-water diffusivities. The result should be useful to predict soil-water diffusivity from sorptivity measurements, especially when it can be postulated that the diffusivity has a well-defined (e.g., exponential) functional dependence on the water content.
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