Journal
CONTINENTAL SHELF RESEARCH
Volume 30, Issue 12, Pages 1314-1323Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.csr.2010.04.014
Keywords
Flocculation; Estuarine turbidity maximum; Tidal asymmetry; Numerical simulation
Categories
Funding
- New York Sea Grant Institute
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Flocculation has an important impact on particle trapping in estuarine turbidity maximum (ETM) through associated Increases in particle settling velocity To quantify the importance of the flocculation processes, a size-resolved flocculation model is implemented into an ocean circulation model to simulate fine-grained particle trapping in an ETM. The model resolves the particle size from robust small flocs, about 30 mu m, to very large flocs, over 1000 mu m. An idealized two-dimensional model study is performed to simulate along-channel variations of suspended sediment concentrations driven by gravitational circulation and tidal currents. The results indicate that the flocculation processes play a key role in generating strong tidal asymmetrical variations in suspended sediment concentration and particle trapping. Comparison with observations suggests that the flocculation model produces realistic characteristics of an ETM (C) 2010 Elsevier Ltd. All rights reserved.
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