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Estimating steady-state evaporation rates from bare soils under conditions of high water table

Open-File Report

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Abstract

A procedure that combines meteorological and soil equations of water transfer makes it possible to estimate approximately the steady-state evaporation from bare soils under conditions of high water table. Field data required include soil-water retention curves, water table depth and a record of air temperature, air humidity and wind velocity at one elevation. The procedure takes into account the relevant atmospheric factors and the soil's capability to conduct 'water in liquid and vapor forms. It neglects the effects of thermal transfer (except in the vapor case) and of salt accumulation. Homogeneous as well as layered soils can be treated. Results obtained with the method demonstrate how the soil evaporation rates·depend on potential evaporation, water table depth, vapor transfer and certain soil parameters.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Unnumbered Series
Title:
Estimating steady-state evaporation rates from bare soils under conditions of high water table
Series title:
Open-File Report
Year Published:
1970
Language:
English
Publisher:
U.S. Government Printing Office
Publisher location:
Washington, DC
Contributing office(s):
Water Resources Division
Description:
vii, 62 p.