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Effects of hysteresis on groundwater recharge from ephemeral flows
Author(s) -
Parissopoulos G. A.,
Wheater H. S.
Publication year - 1992
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 - 10.1029/92wr01902
Subject(s) - ponding , groundwater recharge , ephemeral key , infiltration (hvac) , hydrology (agriculture) , hysteresis , geology , groundwater , environmental science , soil science , aquifer , geotechnical engineering , materials science , drainage , ecology , physics , algorithm , quantum mechanics , composite material , biology , computer science
The effects of hysteresis on the movement of the saturated and unsaturated soil water phase due to infiltration from ephemeral surface water flows are investigated for different scenarios of flood events in homogeneous and heterogeneous media with the use of a two‐dimensional model based on Richards' equation and the dependent domain hysteresis model of Mualem (1984). Hysteresis effects were found in general to be small, but sensitive to water ponding depth, hydraulic contact between surface and groundwater and initial moisture distribution. In all cases tested, hysteresis resulted in higher rise of the toe of the water mound formed beneath the wadi despite a decrease of cumulative infiltration.