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Modeling Direct Runoff Hydrographs With The Surge Function, Denis Voytenko
Modeling Direct Runoff Hydrographs With The Surge Function, Denis Voytenko
USF Tampa Graduate Theses and Dissertations
A surge function is a mathematical function of the form f(x)=axpe-bx. We simplify the surge function by holding p constant at 1 and investigate the simplified form as a potential model to represent the full peak of a stream discharge hydrograph. The previously studied Weibull and gamma distributions are included for comparison. We develop an analysis algorithm which produces the best-fit parameters for every peak for each model function, and we process the data with a MATLAB script that uses spectral analysis to filter year-long, 15-minute, stream-discharge data sets. The filtering is necessary to locate the …