| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Observations of the Ushant tidal front in September 2007
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| Autores: |
Le Boyer, A.
Cambon, Gildas
Daniault, N.
Herbette, Steven
Le Cann, B.
Marie, Louis
Morin, P.
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| Data: |
2009-04
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| Ano: |
2009
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| Palavras-chave: |
Nutrients
Drifters
HF radars
Hydrology
Tidal mixing front
Shelf dynamics
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| Resumo: |
The Ushant tidal front is the dominant feature of the summer season hydrological structure of the Iroise Sea. It separates tidally mixed coastal waters from thermally stratified open Celtic Sea waters. This article reports on observations made in September 2007 during two short cruises that took place aboard R/V "Cotes de la Manche", and gives a general account of the physical structure of the front along one cross-frontal transect. The data set comprises data from a 4 month ADCP mooring, short CTD/fluorescence/nutrients transects, Lagrangian drifter trajectories, and HF radar surface current measurements. One finding is that the surface and bottom fronts, being affected by different dynamical influences, are not necessarily coincident in the vertical. This entails that the opposite density gradients located above and below the thermocline depth do not necessarily compensate, and can each be associated with a significant surface geostrophic expression. A second finding is that mixing effects bear a very strong influence on the thermal structure of the warm-water intrusions associated with frontal cyclonic eddies of the kind described by Pingree [1978. Cyclonic eddies and cross-frontal mixing. journal of the Marine Biological Association of the United Kingdom 58 (4), 955-963]. (C) 2009 Elsevier Ltd. All rights reserved.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2009/publication-6417.pdf
DOI:10.1016/j.csr.2008.12.020
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| Editor: |
Elsevier
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| Relação: |
http://archimer.ifremer.fr/doc/00000/6417/
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| Formato: |
application/pdf
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| Fonte: |
Continental Shelf Research (0278-4343) (Elsevier), 2009-04 , Vol. 29 , N. 8 , P. 1026-1037
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| Direitos: |
2009 Elsevier
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