Author(s): Yong-Kon Yi; Young Do Kim; Deuk-Koo Koh; Woo-Gu Kim; Kwan Soo Jung
Linked Author(s): Young Do Kim
Keywords: CE-QUAL-W2; Turbidity; Suspended solid; Typhoon Rusa
Abstract: Imha multi-purpose Dam is located at 10 km from the city of Andong, Gyeong Sang Province, Korea, and 350 km upstream from the estuary of the Nakdong River. The movement of turbid water in Imha Reservoir was analyzed using field measurements of water temperature turbidity before and after Typhoon ‘Rusa’ came on the watershed. The turbidity variation in Imha reservoir after Typhoon ‘Rusa’ was simulated using CE-QUAL-W2, a two dimensional hydrodynamic and water quality model. The numerical simulation results show that CE-QUAL-W2 seemed to be useful to model the movement of turbid water in a reservoir. To improve the accuracy of numerical modeling of turbidity currents, water temperature of inflows and concentration of suspended solids should be accurately estimated with more measurements of water temperature and also concentration of suspended solids on rainy days.
Year: 2005