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http://dx.doi.org/10.12652/Ksce.2012.32.1B.001

Determination of the Optimal Sediment Discharge Formula for Hyeongsan River Using GSTARS  

Ahn, Jung Min (한국수자원공사 물관리센터)
Lyu, Siwan (창원대학교 공과대학 토목공학과)
Lee, Nam Joo (경성대학교 공과대학 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.1B, 2012 , pp. 1-7 More about this Journal
Abstract
Quasi-two dimensional numerical model (GSTARS) was applied to determine the optimal sediment discharge formula for simulating the sedimentologic characteristics of Hyeongsan river. The field measurements have been conducted to obtain the data, such as sediment discharge, bed material, and channel geometry, for model calibration and verification. The sediment discharge formulas, which have been generally used, have been assessed according to the average error, relative error, RMSE, RRMSE, discrepancy ratio and Nash-Sutcliffe efficiency coefficient for bed changes along the thalweg. From the results, Laursen formula(1958) shows the best performance to simulate the long-term bed change of Hyeongsan river.
Keywords
optimal sediment formula; hyeongsan river; GSTARS; long-term bed change;
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Times Cited By KSCI : 2  (Citation Analysis)
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