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This article in SSSAJ

  1. Vol. 28 No. 4, p. 464-466
     
    Received: Nov 26, 1963
    Published: July, 1964


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doi:10.2136/sssaj1964.03615995002800040006x

Water Vapor Diffusion in Relatively Dry Soil: II. Desorption Experiments1

  1. Ray D. Jackson2

Abstract

Abstract

Water vapor diffusion during desorption was measured in three soil materials at water contents corresponding to a relative pressure range of 0.97 to about 0.05. The data were obtained from a transient desorption experiment conducted at 27°C. Diffusivities, calculated from analysis of water content distribution curves, increase and then decrease with increasing water content. The desorption diffusivity-water content curves exhibit a less distinct maximum, with the maximum occurring at a higher water content than do the sorption diffusivity-water content curves.

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