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Le Hir, Pierre; Breton, M; L'Yavanc, J.. |
Afin de préciser les rejets où il est préférable d'intervenir pour réduire les contaminations des secteurs conchylicoles de l'Elorn et du Nord de la rade de Brest, un calcul de dilution de chacun des rejets a été mené à l'aide d'un modèle mathématique. Après une description des courants de marée calculés dans tout le secteur d'étude, des figures de dilution sont présentées. L'impact de chaque rejet se déduit facilement. |
Tipo: Text |
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Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00103/21460/19041.pdf |
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Grochowski, Ntl; Collins, Mb; Boxall, Sr; Salomon, Jc; Breton, M; Lafite, R. |
Sand transport pathways are predicted, by combining outputs from an hydrodynamic numerical model with empirical sediment transport formulae. Tidal simulations, combined with various wind conditions, are compared with patterns presented in the literature. Results show that tides determine the long-term transport pattern in the area; this consists mainly of an ebb-dominated (North Sea towards Channel) mid-Strait region and flood-dominated pathways along the coastlines, which narrow towards the (Dover) Strait. Localised transport paths are identified; these are believed to be responsible partially for the presence of large sandbanks. Superimposed SW and NE wind activity overwhelms the tidally-induced pattern; this occurs infrequently and long-term pattern is... |
Tipo: Text |
Palavras-chave: ENGLISH CHANNEL; DOVER STRAIT; SEDIMENT DYNAMICS; MODELING; SANDBANKS. |
Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00099/21075/18700.pdf |
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