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Field determination of sorptivity as a function of water content using a tension infiltrometer
Author(s) -
BONSU M.
Publication year - 1993
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1993.tb00463.x
Subject(s) - sorptivity , water content , dimensionless quantity , thermal diffusivity , content (measure theory) , water retention curve , materials science , thermodynamics , soil science , mathematics , physics , geotechnical engineering , absorption of water , environmental science , geology , field capacity , mathematical analysis , composite material
SUMMARY Sorptivity for tension wetting in the field was determined and weighted‐mean diffusivity calculated. Both tension sorptivity and weighted‐mean diffusivity could be described by an exponential function of the form a exp(bθ) where θ is either mean water content or dimensionless water content and a and b are parameters. This relation was valid for an initial water content between 0.016 and 0.047 m 3 m −3 and a final water content between 0.154 and 0.316 m 3 m −3 . Tension sorptivity was more strongly correlated with average water content than dimensionless water content. However, in the case of weighted‐mean diffusivity, the correlations with both dimensionless water content and average water content were almost the same.