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Sediment Resuspension Due to Dredging and Storms: An Analogous Pair

by Raymond A. Sosnowski, Sanders Associates Inc, Nashua, NH, USA,



Document Type: Proceeding Paper

Part of: Dredging and Dredged Material Disposal

Abstract:

The physics of resuspension is represented by the response of the sediment to an applied stress, either dredging operations or storm winds. In either case, once the sediments are mixed into the water column, they begin to settle out in the absence of sufficient energy to maintain suspension. That fraction of sediment that remains in suspension is transported via advection and turbulent diffusion. Dredge- and storm-induced resuspensions differ with respect to spatial and temporal scales as well as the frequencies of occurrences, but also share several common features including the same dominant features of the physical law governing sediment dispersion. Since these two types of resuspension are an analogous pair, future investigations should concentrate on their similarities in order to better understand their differences.

Subject Headings: Sediment | Suspended sediment | Storms | Dredging | Dredged materials | Water resources | Sediment transport

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