Sediment Transport by Strong Wave-Plus-Current Flows

by Richard Soulsby, Hydraulics Research Ltd, Wallingford, United Kingdom,

Document Type: Proceeding Paper

Part of: Coastal Sediments


A prediction formula is derived for the suspended sediment transport rate in coastal regions when the current speed and/or wave orbital velocity is large. It is based on generalised forms for the vertical distributions of eddy viscosity and diffusivity. Initial tests of the formula against field data give reasonable agreement. Because of the emphasis on strong flows, the method is well suited to long-term predictions of sediment transport, for which these events make large contributions.

Subject Headings: Sediment transport | Wave velocity | Water waves | Suspended sediment | Ocean currents | Viscosity | Transport rates

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