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Dispersion parameters for undisturbed partially saturated soil.

Beven, Keith J. and Henderson, D. Ed and Reeves, Alison D. (1993) Dispersion parameters for undisturbed partially saturated soil. Journal of Hydrology, 143 (1-2). pp. 19-44.

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Abstract

The advection-dispersion equation (ADE) does not necessarily provide a good description of solute transport in undisturbed soil cores and field plots, as a result of heterogeneities in pore water velocities related to variability in soil hydraulic properties, and non-equilibrium preferential flow and ‘immobile’ pore water effects. However, it is often used as a functional description of solute transport and this paper reviews the results of applying the ADE to undisturbed soil core and field plot experiments. Very wide ranges of dispersion coefficients and dispersivities have been found. Information available on the spatial variability of the solute transport parameters is also reviewed and suggests that local dispersion parameters may commonly be log normally distributed.

Item Type: Article
Journal or Publication Title: Journal of Hydrology
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22579
Deposited By: ep_ss_importer
Deposited On: 23 Jan 2009 14:10
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:02
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22579

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