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Water Infiltration into Stratified Soil
Author(s) -
Miller D. E.,
Gardner W. H.
Publication year - 1962
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1962.03615995002600020007x
Subject(s) - infiltration (hvac) , infiltrometer , loam , layering , soil science , silt , soil water , soil horizon , wetting , geology , geotechnical engineering , environmental science , materials science , hydraulic conductivity , composite material , geomorphology , botany , biology
A laboratory investigation was made of the effects of textural and structural stratification within the profile on rate of water infiltration into soil. A recording infiltrometer was devised and a method developed for obtaining uniformly packed tubes of soil. Infiltration data were obtained for soil conditioner treated Palouse silt loam. These data were used to test several infiltration equations found in the literature. It was observed that none of the equations tested adequately describe the experimental data. Effects of strata within soil were related to the pore characteristic differences between the layering material and the surrounding soil. When most of the pores in a layer were larger than those in the surrounding soil, infiltration was temporarily inhibited after the wetting front reached the layer. The degree of inhibition was increased when the pore sizes in the layer were increased. Water must accumulate at a layer‐soil interface until it is at a tension low enough to allow it to move into pores in the layer. Water movement into the surface is reduced while the accumulation takes place.