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http://dx.doi.org/10.3741/JKWRA.2018.51.7.599

Variation of design flood according to the temporal resolution and periods of rainfall  

Kim, Min-Seok (Research Project Team, Seoul Institute of Technology)
Lee, Jung-Hwan (Department of Civil Engineering, The University of Seoul)
Moon, Young-Il (Department of Civil Engineering, The University of Seoul)
Publication Information
Journal of Korea Water Resources Association / v.51, no.7, 2018 , pp. 599-606 More about this Journal
Abstract
Most hydrological analysis such as probability rainfall and rainfall time distributions have typically carried out based on hourly rainfall and rainfall - runoff analysis have carried out by applying different periods of rainfall time distribution and probability rainfall. In this study, to quantify the change of design flood due to the data type (hourly and minutely rainfall data) and the probability rainfall and application of different data period to the rainfall time distribution, probability rainfall is calculated by point frequency analysis according to data type and period and rainfall time distribution was calculated by Huff's quartile distributions. In addition, the change analysis of design flood was carried out by rainfall - runoff analysis applying different data periods of design rainfall time distribution. and probability rainfall. As a result, rainfall analysis using minute rainfall data was more accurate and effective than using hourly rainfall data. And the design flood calculated by applying different data period of rainfall time distribution and probability rainfall made a large difference than by applying different data type. It is expected that this will contribute to the hydrological analysis using minutely rainfall.
Keywords
Temporal resolution of rainfall; Periods of rainfall; Design rainfall; Huff's method; Design flood;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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