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Oceanologica Acta
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Oceanologica Acta
Article . 1998 . Peer-reviewed
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Hydrography of the Artabro Gulf in summer: western coastal limit of Cantabrian seawater and wind-induced upwelling at prior cape

Authors: Prego, R; Varela, M;

Hydrography of the Artabro Gulf in summer: western coastal limit of Cantabrian seawater and wind-induced upwelling at prior cape

Abstract

[EN] The Artabro Gulf (1500 km2 north-west of the Iberian Peninsula) has been studied based on data obtained in August 1993, under typical summer meteorological conditions (COPLA 893 cruise). This is the first study on the summer hydrography of the Artabro Gulf. During this season, the hydrography of this area is quite complex and must be understood in terms of three factors: 1) upwelling, 2) two different eastern North Atlantic Central Water (ENACW) water masses and 3) rias water exchange. A local wind-induced upwelling of ENACWp (subpolar) occurs off Prior Cape. The plume is located off the gulf coastline, but inside the continental shelf. The frontal zone, rich in nutrients and chlorophyll, is parallel to the gulf line, starting in the Prior region and ending at the convergence of ENACWp and ENACWt (subtropical), giving it an arched shape. The Artabro Gulf is the place off the Galicia coast where ENACWt and ENACWp are observed and the gulf is the western limit of coastal Cantabrian Sea influence. The upwelling is strongly influenced by the topographic presence of the gulf which generates an ‘upwelling shadow’ where the rias water exchange is confined near the coast and the ENACWp does not penetrate into the rias. The opposite occurs at the southernmost Rias Bajas, where ENACWt upwells inside the rias

[FR] L'hydrographie du golfe Artabre (1500 km2), situé au nord-ouest de la péninsule Ibérique, a été étudiée dans des conditions météorologiques estivales, pour la première fois, à l'aide de données collectées en août 1993 au cours de la campagne COPLA 893. Pour comprendre cette hydrographie très complexe, il faut considérer trois facteurs: l'upwelling, les deux composantes de l'eau centrale nord-est atlantique (ENACW) et l'échange d'eau avec la ria. Une remontée locale d'eau sub-polaire (ENACWp) est induite par le vent près du cap Prior. Le panache est à l'extérieur du golfe mais reste sur le plateau continental. La zone frontale, riche en nutriments et en chlorophylle, suit la ligne de côte en formant un arc qui s'étend du cap Prior jusqu'à la convergence des eaux sub-polaire (ENACWp) et sub-tropicale (ENACWt). Ces deux masses d'eaux se rencontrent dans le golfe Artabre qui constitue la limite côtière occidentale d'influence de la mer Cantabrique. L'upwelling est très marqué par la topographie du golfe qui engendre une « remontée fantôme å où l'échange d'eau avec les rias est confiné près de la côte, empêchant l'ENACWp de pénétrer dans les rias. La situation inverse est observée plus au sud (rias Bajas) où l'ENACWt remonte à l'intérieur des rias

Project ‘Seguimiento de la contaminación del Aegean Sea’ financed by the ‘Ministerio de Medio Ambiente’, ‘Series Históricas’ (ref. 1007) and to E.U. ‘OMEX’ Project (ref. MAS2-CT93-0069)

11 páginas, 8 figuras

Peer reviewed

Country
France
Keywords

Upwelling, ria, Ria, mer Cantabrique, Prior Cape, upwelling, Artabro Gulf, Cap Prior, Cantabrian Sea, Golfe Artabre, cap Prior, Mer Cantabrique, golfe Artabre

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
27
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Top 10%
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47
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