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http://dx.doi.org/10.3741/JKWRA.2018.51.8.739

Rainfall analysis considering watershed characteristics and temporal-spatial characteristics of heavy rainfall  

Kim, Min-Seok (Seoul Institute of Technology)
Choi, Ji-Hyeok (Department of Civil Engineering, University of Seoul)
Moon, Young-Il (Department of Civil Engineering, University of Seoul)
Publication Information
Journal of Korea Water Resources Association / v.51, no.8, 2018 , pp. 739-745 More about this Journal
Abstract
Recently, the incidence of heavy rainfall is increasing. Therefore, a rainfall analysis should be performed considering increasing frequency. The current rainfall analysis for hydrologic design use the hourly rainfall data of ASOS with a density of 36 km on the Korean Peninsula. Therefore, medium and small scale watershed included Thiessen network at the same rainfall point are analyzed with the same design rainfall and time distribution. This causes problem that the watershed characteristics can not be considered. In addition, there is a problem that the temporal-spatial change of the heavy rainfall occurring in the range of 10~20 km can not be considered. In this study, Author estimated design rainfall considering heavy rainfall using minutely rainfall data of AWS, which are relatively dense than ASOS. Also, author analyzed the time distribution and runoff of each case to estimate the huff's method suitable for the watershed. The research result will contribute to the estimation of the design hydrologic data considering the heavy rainfall and watershed characteristics.
Keywords
Heavy rainfall; ASOS; AWS; Design rainfall; Huff's method;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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