Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone
The Cape Verde Frontal Zone separates North and South Atlantic Central Waters in the eastern North Atlantic Subtropical Gyre. CTD-O2 and shipboard ADCP data from three hydrographic sections carried out in September 2003 are used to study the structure of the front. Results show the relation between...
Published in: | Geophysical Research Letters |
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2008
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Online Access: | http://hdl.handle.net/10508/7606 http://hdl.handle.net/10261/318181 https://doi.org/10.1029/2008GL033229 |
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ftcsic:oai:digital.csic.es:10261/318181 2024-02-11T10:06:25+01:00 Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone Martínez-Marrero, Antonio Rodríguez-Santana, Ángel Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Vélez-Belchí, Pedro Parrilla-Barrera, Gregorio Atlantic Ocean Central Atlantic Eastern Central Atlantic 2008 http://hdl.handle.net/10508/7606 http://hdl.handle.net/10261/318181 https://doi.org/10.1029/2008GL033229 unknown Centro Oceanográfico de Canarias Geophysical Research Letters, 35. 2008: - http://hdl.handle.net/10508/7606 http://hdl.handle.net/10261/318181 doi:10.1029/2008GL033229 289 1944-8007 open Centro Oceanográfico de Canarias Medio Marino research article 2008 ftcsic https://doi.org/10.1029/2008GL033229 2024-01-16T11:45:03Z The Cape Verde Frontal Zone separates North and South Atlantic Central Waters in the eastern North Atlantic Subtropical Gyre. CTD-O2 and shipboard ADCP data from three hydrographic sections carried out in September 2003 are used to study the structure of the front. Results show the relation between spatial variations of water masses and currents, demonstrating the importance of advection in the distribution of water masses. Diapycnal diffusivities due to double diffusion and vertical shear instabilities are also estimated. Existence of competition between the two processes through the water column is shown. Depth-averaged diffusivities suggest that salt fingering dominates diapycnal mixing, except areas of purest South Atlantic Central Water. Here, double diffusion processes are weak and, consequently, shear of the flow is the main process. Results also show that strong mixing induced by vertical shear is associated with a large intrusion found near the front. No Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Geophysical Research Letters 35 7 n/a n/a |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Centro Oceanográfico de Canarias Medio Marino |
spellingShingle |
Centro Oceanográfico de Canarias Medio Marino Martínez-Marrero, Antonio Rodríguez-Santana, Ángel Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Vélez-Belchí, Pedro Parrilla-Barrera, Gregorio Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
topic_facet |
Centro Oceanográfico de Canarias Medio Marino |
description |
The Cape Verde Frontal Zone separates North and South Atlantic Central Waters in the eastern North Atlantic Subtropical Gyre. CTD-O2 and shipboard ADCP data from three hydrographic sections carried out in September 2003 are used to study the structure of the front. Results show the relation between spatial variations of water masses and currents, demonstrating the importance of advection in the distribution of water masses. Diapycnal diffusivities due to double diffusion and vertical shear instabilities are also estimated. Existence of competition between the two processes through the water column is shown. Depth-averaged diffusivities suggest that salt fingering dominates diapycnal mixing, except areas of purest South Atlantic Central Water. Here, double diffusion processes are weak and, consequently, shear of the flow is the main process. Results also show that strong mixing induced by vertical shear is associated with a large intrusion found near the front. No |
format |
Article in Journal/Newspaper |
author |
Martínez-Marrero, Antonio Rodríguez-Santana, Ángel Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Vélez-Belchí, Pedro Parrilla-Barrera, Gregorio |
author_facet |
Martínez-Marrero, Antonio Rodríguez-Santana, Ángel Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Vélez-Belchí, Pedro Parrilla-Barrera, Gregorio |
author_sort |
Martínez-Marrero, Antonio |
title |
Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
title_short |
Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
title_full |
Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
title_fullStr |
Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
title_full_unstemmed |
Distribution of water masses and diapycnal mixing in the Cape Verde Frontal Zone |
title_sort |
distribution of water masses and diapycnal mixing in the cape verde frontal zone |
publishDate |
2008 |
url |
http://hdl.handle.net/10508/7606 http://hdl.handle.net/10261/318181 https://doi.org/10.1029/2008GL033229 |
op_coverage |
Atlantic Ocean Central Atlantic Eastern Central Atlantic |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de Canarias Geophysical Research Letters, 35. 2008: - http://hdl.handle.net/10508/7606 http://hdl.handle.net/10261/318181 doi:10.1029/2008GL033229 289 1944-8007 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2008GL033229 |
container_title |
Geophysical Research Letters |
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35 |
container_issue |
7 |
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n/a |
op_container_end_page |
n/a |
_version_ |
1790604117959245824 |