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Influence of Variations in the Diffusivity‐Water Content Relation on Infiltration
Author(s) -
Hanks R. J.,
Bowers S. A.
Publication year - 1963
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/sssaj1963.03615995002700030015x
Subject(s) - infiltration (hvac) , thermal diffusivity , water content , saturation (graph theory) , soil science , soil water , mass diffusivity , water saturation , environmental science , materials science , geology , geotechnical engineering , porosity , mathematics , thermodynamics , composite material , physics , combinatorics
Estimates of the influence of variations in the diffusivity (or conductivity)‐water content relation on infiltration were made using a numerical method. Where the diffusivity was increased or decreased up to a factor of two at saturation, infiltration was markedly changed. However, variations of the diffusivity by a factor of 100 at drier moisture contents had no significant influence on infiltration. This implies that infiltration is governed, to a large extent, by the soil properties at water contents near saturation and is little influenced by soil properties at drier water contents.