The Eastern Boundary of the Subtropical North Atlantic
A quasi-meridional hydrographic section carried out between 60-degrees and 20-degrees-N offshore from the European and African continental slopes is analyzed in terms of water masses and zonal transports in and out of the eastern boundary. Outstanding features of the meridional distribution of water...
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Amer Meteorological Soc
1994
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fttriple:oai:gotriple.eu:10670/1.crt9h3 2023-05-15T17:30:55+02:00 The Eastern Boundary of the Subtropical North Atlantic Arhan, Michel Colin De Verdiere, Alain Memery, L 1994-01-01 https://doi.org/10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 https://archimer.ifremer.fr/doc/00196/30717/29449.pdf https://archimer.ifremer.fr/doc/00196/30717/ en eng Amer Meteorological Soc doi:10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 10670/1.crt9h3 https://archimer.ifremer.fr/doc/00196/30717/29449.pdf https://archimer.ifremer.fr/doc/00196/30717/ other Archimer, archive institutionnelle de l'Ifremer Journal Of Physical Oceanography (0022-3670) (Amer Meteorological Soc), 1994-06 , Vol. 24 , N. 6 , P. 1295-1316 geo hist Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 1994 fttriple https://doi.org/10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 2023-01-22T18:27:20Z A quasi-meridional hydrographic section carried out between 60-degrees and 20-degrees-N offshore from the European and African continental slopes is analyzed in terms of water masses and zonal transports in and out of the eastern boundary. Outstanding features of the meridional distribution of water masses are focused on, such as the transition between North Atlantic and South Atlantic Central Waters at 20-degrees-25-degrees-N, the properties and anticyclonic circulation of the Rockall Channel mode water, and the northern boundary of the large-scale Mediterranean Water plume at about 50-degrees-N. An eastward transport of about 11 X 10(6) m3 s-1 is found to enter the eastern boundary layer at densities lower than 27.25 and feed southward alongshore currents. The relation of the incoming transport to the water mass distribution and its eventual splitting into several outflowing components are discussed. Apart from the downward entrainment of upper water known to occur in the Gulf of Cadiz, there is no sign of the so-called ''eastern boundary ventilation'' mechanism in the central water density range. Yet a significant transport is found to escape the winter mixed layer toward the interior of the subtropical gyre, suggesting the horizontal southward currents across the sloping bottom of the mixed layer to be the main cause of ventilation at the eastern boundary. Text North Atlantic Unknown |
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language |
English |
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geo hist |
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geo hist Arhan, Michel Colin De Verdiere, Alain Memery, L The Eastern Boundary of the Subtropical North Atlantic |
topic_facet |
geo hist |
description |
A quasi-meridional hydrographic section carried out between 60-degrees and 20-degrees-N offshore from the European and African continental slopes is analyzed in terms of water masses and zonal transports in and out of the eastern boundary. Outstanding features of the meridional distribution of water masses are focused on, such as the transition between North Atlantic and South Atlantic Central Waters at 20-degrees-25-degrees-N, the properties and anticyclonic circulation of the Rockall Channel mode water, and the northern boundary of the large-scale Mediterranean Water plume at about 50-degrees-N. An eastward transport of about 11 X 10(6) m3 s-1 is found to enter the eastern boundary layer at densities lower than 27.25 and feed southward alongshore currents. The relation of the incoming transport to the water mass distribution and its eventual splitting into several outflowing components are discussed. Apart from the downward entrainment of upper water known to occur in the Gulf of Cadiz, there is no sign of the so-called ''eastern boundary ventilation'' mechanism in the central water density range. Yet a significant transport is found to escape the winter mixed layer toward the interior of the subtropical gyre, suggesting the horizontal southward currents across the sloping bottom of the mixed layer to be the main cause of ventilation at the eastern boundary. |
format |
Text |
author |
Arhan, Michel Colin De Verdiere, Alain Memery, L |
author_facet |
Arhan, Michel Colin De Verdiere, Alain Memery, L |
author_sort |
Arhan, Michel |
title |
The Eastern Boundary of the Subtropical North Atlantic |
title_short |
The Eastern Boundary of the Subtropical North Atlantic |
title_full |
The Eastern Boundary of the Subtropical North Atlantic |
title_fullStr |
The Eastern Boundary of the Subtropical North Atlantic |
title_full_unstemmed |
The Eastern Boundary of the Subtropical North Atlantic |
title_sort |
eastern boundary of the subtropical north atlantic |
publisher |
Amer Meteorological Soc |
publishDate |
1994 |
url |
https://doi.org/10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 https://archimer.ifremer.fr/doc/00196/30717/29449.pdf https://archimer.ifremer.fr/doc/00196/30717/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Journal Of Physical Oceanography (0022-3670) (Amer Meteorological Soc), 1994-06 , Vol. 24 , N. 6 , P. 1295-1316 |
op_relation |
doi:10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 10670/1.crt9h3 https://archimer.ifremer.fr/doc/00196/30717/29449.pdf https://archimer.ifremer.fr/doc/00196/30717/ |
op_rights |
other |
op_doi |
https://doi.org/10.1175/1520-0485(1994)024<1295:TEBOTS>2.0.CO;2 |
_version_ |
1766128056466931712 |