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Sediment transport predictions for the English Channel, using numerical models

Sediment transport predictions for the English Channel, using numerical models
Sediment transport predictions for the English Channel, using numerical models
Output from an hydrodynamic numerical model (Salomon & Breton 1991a, b) has been combined with various empirical formulae to derive sediment transport rates and directions. The predictions are compared with radioactive sand tracer experiments, demonstrating the applicability of Gadd et al.’s (1978) expression. The derived bedload transport pattern for the area is consistent with sedimentological and geomorphological evidence, but provides improved resolution.

A ‘bedload parting zone’ is identified for the central English Channel; this is well defined for sand movement, but seabed material present over this area (gravel) is not predicted to move significantly. The area is ‘non-erosive’, over which fine-grained sediments are being transported. A bedload convergence is located to the southwest of the Dover Strait, not in the Strait itself as proposed previously. A transport pathway, bypassing the convergence, along the French coastline (which is supported by radioactive tracer experiments) could be responsible for sand transfer from the English Channel to the southern North Sea.
0016-7649
683-695
Grochowski, N.T.L.
4ccff672-5854-4441-9aaa-5404dd50afa6
Collins, M.B.
3b70278b-0004-45e0-b3c9-0debdf0a9351
Boxall, S.R.
ee92cf98-339f-4b43-ac1d-b4a4c983ffe2
Salomon, J.C.
a6a1df54-169e-4d55-82e8-cbbf448037f7
Grochowski, N.T.L.
4ccff672-5854-4441-9aaa-5404dd50afa6
Collins, M.B.
3b70278b-0004-45e0-b3c9-0debdf0a9351
Boxall, S.R.
ee92cf98-339f-4b43-ac1d-b4a4c983ffe2
Salomon, J.C.
a6a1df54-169e-4d55-82e8-cbbf448037f7

Grochowski, N.T.L., Collins, M.B., Boxall, S.R. and Salomon, J.C. (1993) Sediment transport predictions for the English Channel, using numerical models. Journal of the Geological Society, 150 (4), 683-695. (doi:10.1144/gsjgs.150.4.0683).

Record type: Article

Abstract

Output from an hydrodynamic numerical model (Salomon & Breton 1991a, b) has been combined with various empirical formulae to derive sediment transport rates and directions. The predictions are compared with radioactive sand tracer experiments, demonstrating the applicability of Gadd et al.’s (1978) expression. The derived bedload transport pattern for the area is consistent with sedimentological and geomorphological evidence, but provides improved resolution.

A ‘bedload parting zone’ is identified for the central English Channel; this is well defined for sand movement, but seabed material present over this area (gravel) is not predicted to move significantly. The area is ‘non-erosive’, over which fine-grained sediments are being transported. A bedload convergence is located to the southwest of the Dover Strait, not in the Strait itself as proposed previously. A transport pathway, bypassing the convergence, along the French coastline (which is supported by radioactive tracer experiments) could be responsible for sand transfer from the English Channel to the southern North Sea.

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Published date: 1993

Identifiers

Local EPrints ID: 192515
URI: http://eprints.soton.ac.uk/id/eprint/192515
ISSN: 0016-7649
PURE UUID: 8e426493-7dbc-48b9-9fb4-a3d4f8ddc328

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Date deposited: 05 Jul 2011 10:16
Last modified: 14 Mar 2024 03:50

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Contributors

Author: N.T.L. Grochowski
Author: M.B. Collins
Author: S.R. Boxall
Author: J.C. Salomon

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