HYDRODYNAMICS OF A BAR IN A FLOOD CHANNEL - THE WESTERSCHELDE ESTUARY

Claire Jeuken

Abstract


Several long-term current meter observations (30 days) over a complex flood shield, i.e. an estuarine bar, display major temporal and spatial variations in current asymmetry. The variations in current asymmetry indicate the presence of small-scale circulations of sediment that are induced by smaller channels that penetrate the bar. The current meter observations and depth-averaged current patterns obtained with an ADCP revealed processes of advective flow acceleration and deceleration, as well as flow convergence and divergence, over the bars in the small channels.

Keywords


bar hydrodynamics; channel; flood channel; estuary; Westerschelde Estuary

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