Evaluating characteristics of runoff responses by rainfall direction
Changyeol Parka Chulsang Yoob,*
aDepartment of Environmental and Urban Planning, Jeju Research Institute bSchool of Civil, Environmental and Architectural Engineering, Korea Universit
This study examined characteristic differences by the rainfall direction on the runoff responses. The directional characteristics of
hydrological components in a basin were quantified by von Mises distribution. The runoff hydrograph was derived using the result of
convolution integration of each distribution and this hydrograph was compared with GIUH model and observed data. As a result, it was
found that runoff response by rainfall direction was more similar the observed rainfall-runoff data than the runoff result using GIUH
model. These results implies that runoff modeling could be improved by considering directional components in hydrologic analysis.
This study would be helpful to reduce uncertainties of hydrologic analysis considering a non-linearity of rainfall-runoff process by the
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32. 1) 가상유역에 대한 적용사례를 다룬 Park and Yoo (2016) “Effects on Characteristics of Instantaneous Unit Hydrograph by Rainfall Direction”의 연구내용을 일부 재정리하였음.