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WATER RESOURCES RESEARCH,
VOL. 45,
W10429,
9 PP., 2009
doi:10.1029/2008WR007685
Explicit infiltration function for boreholes under constant head conditions
Department of Hydrology and Water Resources, University of Arizona, Tucson, Arizona, USA
Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer, Israel
Department of Soil Water and Environmental Science, University of Arizona, Tucson, Arizona, USA
Infiltration per unit area of the source region from discs, strips and furrows has previously been shown to be the sum of the one-dimensional infiltration and an edge effect term. Here we apply the same approach to examine infiltration under a constant head from boreholes (both lined and unlined). A critical empirical parameter (γ) in the edge effect term is related to the radius of the borehole, soil hydraulic properties, boundary and initial conditions. For lined boreholes, γ has a narrow range and for the examples investigated, a constant value of 1.06 introduces less than 5% error compared to using the case-specific γ value. For unlined boreholes, γ is larger, ranging between 1.02 and 3.16 for the examples investigated, and should be estimated for specific conditions.
Received 23 December 2008; accepted 5 August 2009; published 21 October 2009.
Citation: (2009), Explicit infiltration function for boreholes under constant head conditions, Water Resour. Res., 45, W10429, doi:10.1029/2008WR007685.
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