Geography 327      Hydrology

Water in the zone of aeration
(unsaturated or vadose zone)


infiltration rate

Hydrologic horizons in the zone of aeration

ground-water zone

tension saturated zone (capillary fringe)

intermediate zone

root zone

Soil water redistribution

Hydrologic parameters


volumetric water content

ratio of water volume to soil volume

degree of saturation

proportion of pore space that contains water, not measured by calculated from ratio of volumetric water content and porosity

pressure head and hydraulic conductivity

soil water pressure

moisture-characteristic curve

hydraulic conductivity

field capacity

permanent wilting point

hygroscopic water

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