Diffusivity of Soil Water During Sorption as Affected by Temperature
1959
Gardner, W. R.
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.
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