On the Origin of the Azores Current.

Klein, Birgit and Siedler, Gerold (1989) On the Origin of the Azores Current. Open Access Journal of Geophysical Research: Oceans, 94 (C5). pp. 6159-6168. DOI 10.1029/JC094iC05p06159.

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Abstract

The Azores Current, south of the Azores Archipelago, is part of the subtropical North Atlantic gyre. Using an international hydrographic data set, we analyze mean and seasonal geostrophic transport fields in the upper 800 m of the ocean in order to determine the origin of the Azores Current in the western basin and seasonal changes in the related flow. Geostrophic currents are obtained by using the method applied by Stramma (1984) in the eastern basin. The Azores Current is found to originate in the area of the Southwest Newfoundland Rise (Figure 10). In winter an almost uniform current connects this region of origin with the Azores Current, while a branching into two current bands is observed in summer, with the southern band forming a marked cyclonic loop. Within the upper 800 m, all of the transport in the northern band and about 70% of the transport in the southern band recirculates in the eastern basin. Additionally, expendable bathythermograph data from the Azores Current region indicate an increase of eddy potential energy from winter to summer.

Document Type: Article
Keywords: subtropical North Atlantic gyre
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/JC094iC05p06159
ISSN: 2169-9275
Date Deposited: 25 Sep 2012 12:30
Last Modified: 26 Sep 2017 11:11
URI: http://oceanrep.geomar.de/id/eprint/15387

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