Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9479181 | Continental Shelf Research | 2005 | 11 Pages |
Abstract
A numerical modelling study on the effects of sediment-induced stratification on tidal currents is conducted for an idealized tidal estuary with a muddy seabed. The numerical model is a three-dimensional oceanic sediment transport model capable of predicting dynamics of Newtonian fluid mud layers due to coupling of the sea water density and suspended sediment concentration. The model uses a reparameterized bottom drag coefficient Cd that incorporates a linear stability function of flux Richardson number Rf. The study has shown that the sediment-induced stratification in the bottom boundary layer (BBL) reduces the vertical eddy viscosity and bottom shear stress in comparison with the model prediction in a neutrally stratified BBL. In response to these apparent reductions, the tidal current shear in the water column is increased in the estuary.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
X.H. Wang, D.S. Byun, X.L. Wang, Y.K. Cho,