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http://dx.doi.org/10.5762/KAIS.2019.20.2.412

Analysis of Streamflow Characteristics of Boryeong-dam Watershed using Global Optimization Technique by Infiltraion Methods of CAT  

Park, Sanghyun (Smart City and Construction Engineering, University of Science and Technology)
Kim, Hyeonjun (Smart City and Construction Engineering, University of Science and Technology)
Jang, Cheolhee (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.2, 2019 , pp. 412-424 More about this Journal
Abstract
In this study, the changes of the streamflow characteristics of the watershed were analysed depending on the infiltration methods of CAT. The study area, Boryeong-dam watershed located in Chungcheongnam-do area, has been suffered from severe drought in recent years and stabilized regarding on the storage rate through efforts such as constructing a channel connecting the upstream of Boryeong-dam from the downstream of the Geum river. In this study, the effects of soil infiltration parameters on the watershed streamflow characteristics were analyzed by the infiltration methods of CAT such as Rainfall Excess, Green&Ampt and Horton. And the parameter calibrations were conducted by SCEUA-P, a global optimization technique module of the PEST, the package for parameter optimization and uncertainty analysis, to compare the yearly variations of soil parameters for infiltration methods of CAT. In addition, the streamflow characteristics were analyzed for three infiltration methods by applying three different scenarios, such as applying calibrated parameters for every years to simulate the model for each years, applying calibrated parameters for the entire period to simulate the model for entire period, and applying the average value of yearly calibrated parameters to simulate the model for entire period.
Keywords
CAT; Boryeong-dam; Global optimization technique; Parameter optimization; Infiltration;
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Times Cited By KSCI : 5  (Citation Analysis)
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