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Simulation of Circulation and Water Qualities on a Partly Opened Estuarine Lake Through Sluice Gate  

서승원 (군산대학교 해양시스템공학과)
김정훈 (군산대학교 해양시스템공학과)
유시흥 (군산대학교 해양시스템공학과)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.14, no.2, 2002 , pp. 136-150 More about this Journal
Abstract
To improve the water quality of the recently constructed Siwhaho, sluice gates were operated to allow free exchange of water with the sea. This estuarine lake connected to the outer sea through narrow gates is affected mainly by flushing by gate operation and river flows and wind forcing sometimes. As a predicting tool far the water qualities, a three-dimensional finite volume model CE-QUAL-ICM is incorporated into a finite element hydrodynamic model, TIDE3D. In coupling these two different modules, a new error minimization technique is applied by considering conservation of mass. Model tests for one year after calibration and validation using field observation show that eutrophication and other biological changes reach quasi-steady state after initial 60 days of simulation, thus it would be necessary to consider moderate ramp up option to remove initial uncertainties due to cold start option. Sediment-water interaction might not be a concern in the long-term simulation, since its effect is negligible. Simulated results show the newly applied scheme can be applied with satisfaction not only fur lessening of eutrophic processes in an estuarine lake but also looking for some active circulation to improve water quality.
Keywords
artificial lake; circulation; eutrophication; water quality simulation; long-term changes;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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