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Diffusivity of Soil Water During Sorption as Affected by Temperature
Author(s) -
Gardner W. R.
Publication year - 1959
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/sssaj1959.03615995002300060015x
Subject(s) - thermal diffusivity , saturation (graph theory) , soil water , sorption , viscosity , water content , hysteresis , soil science , chemistry , capillary action , thermodynamics , materials science , environmental science , geotechnical engineering , geology , adsorption , composite material , physics , mathematics , organic chemistry , combinatorics , quantum mechanics
The sorption diffusivity at saturation and at the air‐dry water content has been measured for five soils of different textures as a function of temperature. Near saturation, the viscosity effect is predominant. At low water contents, the effect of temperature upon the suction becomes important and in some cases exceeds the viscosity effect. The hysteresis effect is often as large or larger than the temperature effect. For many purposes it may be acceptable to assume the diffusivity and capillary conductivity to be independent of temperature, at least at normal laboratory and field temperatures.