"This paper addresses the feasibility of using antecedent soil moisture as a tool for predicting the extractions from rainfall due to the infiltration process by solving the one-dimensional equation for saturated- unsaturated flow through porous media. Soil moisture characteristics in the form of empirical equations were used to incorporate the hysteretic behavior of the soil-water relationships into the model. Two sets of parameters were developed to be representative of a silty sand and a silty fine sand.
Extractions as infiltration from a given storm hyetograph and the total volume of direct runoff were computed for different initial moisture states. When the initial moisture state is such that the applied storm allows resaturation of the soil column, a well-defined relationship exists between soil moisture in the upper 20 or 30 cm of the soil column and the volume of runoff. Temporal distribution of a storm is a reflection of both the rainfall intensities and the storm duration. The correlation between soil moisture at a discrete depth and volume of runoff is greater for storms of high intensities"--Abstract, page ii.
Westphal, Jerome A.
Morris, Charles Darwin
Pyron, Howard D.
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
United States. Army Corps of Engineers
University of Missouri--Rolla
ix, 186 pages
© 1985 Karen Sue Angert, All rights reserved.
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Angert, Karen Sue, "A theoretical study of antecedent soil moisture as it relates to the rainfall-runoff relationship" (1985). Masters Theses. 285.