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Interpretation of tracer experiments with fine-grained dredging material at the Belgian Continental Shelf by the use of numerical models
Van den Eynde, D. (2004). Interpretation of tracer experiments with fine-grained dredging material at the Belgian Continental Shelf by the use of numerical models. J. Mar. Syst. 48(1-4): 171-189. https://dx.doi.org/10.1016/j.jmarsys.2003.03.003
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer
Ook verschenen in:
Delhez, E.J.M.; Deleersnijder, E.; Rixen, M. (2004). Tracer methods in geophysical fluid dynamics. Journal of Marine Systems, 48(1-4). Elsevier: Amsterdam. 1-194 pp., meer
Peer reviewed article  

Beschikbaar in  Auteur 
    VLIZ: Open Repository 222759 [ OMA ]

Trefwoorden
    Dredging
    Numerical models
    Properties > Physical properties > Turbidity
    Sediments > Cohesive sediments
    Tracers > Radioactive tracers
    Transport > Sediment transport
    ANE, België, Belgisch Continentaal Plat (BCP) [Marine Regions]
    Marien/Kust
Author keywords
    radioactive tracers; sediment transport; mathematical models; cohesive sediments; dredging; turbidity; North Sea; southern bight; Belgian Continental Shelf

Auteur  Top 
  • Van den Eynde, D., meer

Abstract
    Radioactive tracer experiments were used by HAECON NV to give insight into the transport of the dredged material in Belgian coastal waters. The experiments showed that material dumped less than 25 km from the coast recirculated rapidly to the coast, while material dumped further from the coast disappeared from the Belgian Continental Shelf. The degree of recirculation was however not well determined, due to large uncertainties in the experiments. A vertically integrated sediment transport model is therefore used to simulate the dispersion of dredged material in the Belgian coastal waters. The model is a semi-Lagrangian model, based on the Second Moment Method. The bottom stress is calculated under the influence of prevailing currents and waves. Although many uncertainties still remain in the modelling of sediment transport, this simple sediment transport model gives satisfying results in simulating the tracer experiments. By a careful interpretation of the experimental and model results, new insight is obtained about the existence of the turbidity maximum in the Belgian coastal waters.

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