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http://dx.doi.org/10.3741/JKWRA.2012.45.6.531

Application of the Beta Distribution for the Temporal Quantification of Storm Events  

Jun, Chang-Hyun (School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University)
Yoo, Chul-Sang (School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University)
Publication Information
Journal of Korea Water Resources Association / v.45, no.6, 2012 , pp. 531-544 More about this Journal
Abstract
This study suggested the parameter estimation method for given rainfall events to be properly expressed by the beta distribution. For this purpose, this study compared the characteristics of probability density function with the parameter proposed considering the cases with and without addition to the rainfall peak, and the cases of using the real hyetograph and the rearranged hyetograph about the rainfall peak. As an example, this study analyzed the independent rainfall events at Seoul in 2010 and the annual maximum independent rainfall events from 1961 to 2010. The results derived are as follows. First, this study confirmed the necessity of additional consideration on rainfall peak to mimic the real hyetograph of rainfall events by the beta distribution. Second, this study confirmed the case of using rearranged hyetograph about the rainfall peak derived a better beta distribution to well mimic the characteristics of real rainfall than the case using the real hyetograph.
Keywords
temporal distribution of rainfall; beta distribution; independent rainfall event; hyetograph;
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Times Cited By KSCI : 1  (Citation Analysis)
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