Post‐Irrigation Movement of Soil Water: 1. Redistribution

W. R. Gardner, D. Hillel, Y. Benyamini

Research output: Contribution to journalArticlepeer-review

189 Scopus citations

Abstract

Water content measurements by γ‐ray attenuation in soil columns were made during redistribution following irrigation. Approximate solutions of the unsaturated flow equation are derived that describe the water content above the initial wetting front as a function of time. For times sufficiently large, these solutions reduce to the frequently used empirical expression W = a t−b, where W is soil water content, t is time, and a and b are constants. These constants can thus be related to the capillary conductivity and soil water diffusivity.

Original languageEnglish
Pages (from-to)851-861
Number of pages11
JournalWater Resources Research
Volume6
Issue number3
DOIs
StatePublished - Jun 1970

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