Solute transport in infiltration-redistribution cycles in heterogeneous soils

S. C. Lessoff, P. Indelman, G. Dagan

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


An analytic model of transient unsaturated infiltration is presented. The model is based on the column conceptualization of flow and transport in unsaturated soil which is expanded here to incorporate repeated infiltration and redistribution stages. The transport of reactive solute is modeled by assuming three mechanisms: advection by gravitational water flow, equilibrium sorption and linear decay. Solutions of the flow and transport equations are derived for multiple infiltration-redistribution cycles and for Dirac and finite pulse solute applications. Expressions are derived for average moisture content and for average concentration regarding the soil saturated conductivity a random value.

Original languageEnglish
Title of host publicationEnvironmental Mechanics
Subtitle of host publicationWater, Mass and Energy Transfer in the Biosphere, 2002
EditorsDavid Smiles, Peter A.C. Raats, Arthur W. Warrick
PublisherBlackwell Publishing Ltd
Number of pages2
ISBN (Electronic)9781118668658
ISBN (Print)9780875909882
StatePublished - 2002

Publication series

NameGeophysical Monograph Series
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779


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