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From Excess Infiltration to Aquifer Recharge: A Derivation Based on the Theory of Flow of Water in Unsaturated Soils
Author(s) -
MorelSeytoux Hubert J.
Publication year - 1984
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr020i009p01230
Subject(s) - groundwater recharge , hydrograph , aquifer , infiltration (hvac) , vadose zone , hydrology (agriculture) , soil science , percolation theory , geology , soil water , geotechnical engineering , environmental science , mathematics , groundwater , surface runoff , geography , meteorology , ecology , topology (electrical circuits) , combinatorics , biology
An approximate unit hydrograph of aquifer recharge due to effective percolation is derived from a theory describing flow of water in unsaturated soils. The parameters appearing in the expression of the unit hydrograph have physical meaning. Comparison of the theory with field observations indicates that the theory works well. A new tool for estimation of the temporal variation of aquifer recharge from that of excess infiltration is now available. The tool is practical (simple) and physical and apparently works well, as evidenced by comparisons with field observations.