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Unsaturated and Saturated Flow Through a Thin Porous Layer on a Hillslope
Author(s) -
Hurley David G.,
Pantelis Gary
Publication year - 1985
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/wr021i006p00821
Subject(s) - impervious surface , infiltration (hvac) , vadose zone , geology , porosity , subsurface flow , richards equation , kinematic wave , water table , flow (mathematics) , geotechnical engineering , soil science , hydrology (agriculture) , surface runoff , mechanics , materials science , water content , soil water , groundwater , composite material , physics , ecology , biology
The subsurface stormflow in a layer of porous earth overlying an impervious hill is investigated in the case when the thickness of the layer is small compared to a typical hill dimension. If the infiltration rate at the surface is low and varies slowly with time, the head is approximately constant along normals to the hillslope, and the flow in both the saturated and unsaturated regions is described by a simple kinematic wave equation. Solutions of this equation describe the spatial and temporal development of the water table as well as the flow in the saturated and unsaturated regions. A numerical example is given.