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|Title: ||Comparison of Infiltration Equations and their Field Validation with Rainfall Simulation|
|Authors: ||Turner, Ellen Rebecca|
|Advisors: ||Felton, Gary K|
|Department/Program: ||Biological Resources Engineering|
|Sponsors: ||Digital Repository at the University of Maryland|
University of Maryland (College Park, Md.)
|Keywords: ||Hydrology (0388)|
Engineering, Agricultural (0539)
Agriculture, Soil Science (0481)
Infiltration rate equation; Rainfall simulation; Parameter calibration; Model validation; Approximate infiltration model
|Issue Date: ||13-Dec-2006|
|Abstract: ||Infiltration is a complex process with many factors contributing to the rate. Different approximate equations for infiltration differ in the parameters they require and predict different infiltration rate curves.
Five equations including those of Kostiakov, Horton, Holtan, Philip and Green-Ampt were compared to determine which one most accurately predicted measured infiltration rates from rainfall simulation events at two different locations. Parameters were developed from measured infiltration data and laboratory analyses of soil samples.
The Green-Ampt, Holtan and Philip equations with respective root mean squared errors of 0.15, 0.17, and 0.19 cmh-1, provided the first, second and third best estimates of infiltration rates, for observed infiltration data at the University of Maryland's Research and Education Center in Upper Marlboro, Maryland. An atypical infiltration curve was observed for the Poplar Hill site on the Eastern Shore of Maryland for which infiltration rate was constant and equal to rainfall rate.|
|Appears in Collections:||Environmental Science & Technology Theses and Dissertations|
UMD Theses and Dissertations
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