Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements
Glider measurements acquired along 4 transects between Cap‐Vert Peninsula and the Cape Verde archipelago in the eastern tropical North Atlantic during March‐April 2014 were used to investigate fine‐scale stirring in an anticyclonic eddy. The anticyclone was formed near 12°N off the continental shelf...
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fttriple:oai:gotriple.eu:10670/1.f4bcv0 2023-05-15T17:30:52+02:00 Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements Kolodziejczyk, Nicolas Testor, Pierre Lazar, Alban Echevin, Vincent Krahmann, Gerd Chaigneau, Alexis Gourcuff, Claire Wade, Malick Faye, Saliou Estrade, Philippe Capet, Xavier Mortier, Laurent Brehmer, Patrice Schuette, Florian Karstensen, Johannes https://doi.org/10.1029/2018JC014135 https://archimer.ifremer.fr/doc/00450/56162/57708.pdf https://archimer.ifremer.fr/doc/00450/56162/57709.pdf https://archimer.ifremer.fr/doc/00450/56162/ en eng Amer Geophysical Union doi:10.1029/2018JC014135 10670/1.f4bcv0 https://archimer.ifremer.fr/doc/00450/56162/57708.pdf https://archimer.ifremer.fr/doc/00450/56162/57709.pdf https://archimer.ifremer.fr/doc/00450/56162/ other Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2018-09 , Vol. 123 , N. 9 , P. 6312-6329 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1029/2018JC014135 2023-01-22T18:32:30Z Glider measurements acquired along 4 transects between Cap‐Vert Peninsula and the Cape Verde archipelago in the eastern tropical North Atlantic during March‐April 2014 were used to investigate fine‐scale stirring in an anticyclonic eddy. The anticyclone was formed near 12°N off the continental shelf and propagated north‐west towards the Cape Verde islands. At depth, between 100‐400 m, the isolated anticyclone core contained relatively oxygenated, low salinity South Atlantic Central Water, while the surrounding water masses were saltier and poorly oxygenated. The dynamical and thermohaline subsurface environment favored the generation of fine‐scale horizontal and vertical temperature and salinity structures in and around the core of the anticyclone. These features exhibited horizontal scales of O(10‐30 km) relatively small with respect to the eddy radius of O(150 km). The vertical scales of O(5‐100 m) were associated to density‐compensated gradient. Spectra of salinity and oxygen along isopycnals revealed a slope of around k‐2 in the 10‐100 km horizontal scale range. Further analyses suggest that the fine‐scale structures are likely related to tracer stirring processes. Such mesoscale anticyclonic eddies and the embedded fine‐scale tracers in and around them could play a major role in the transport of South Atlantic Central Water masses and ventilation of the North Atlantic Oxygen Minimum Zone. Text North Atlantic Unknown Journal of Geophysical Research: Oceans 123 9 6312 6329 |
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English |
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geo envir Kolodziejczyk, Nicolas Testor, Pierre Lazar, Alban Echevin, Vincent Krahmann, Gerd Chaigneau, Alexis Gourcuff, Claire Wade, Malick Faye, Saliou Estrade, Philippe Capet, Xavier Mortier, Laurent Brehmer, Patrice Schuette, Florian Karstensen, Johannes Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
topic_facet |
geo envir |
description |
Glider measurements acquired along 4 transects between Cap‐Vert Peninsula and the Cape Verde archipelago in the eastern tropical North Atlantic during March‐April 2014 were used to investigate fine‐scale stirring in an anticyclonic eddy. The anticyclone was formed near 12°N off the continental shelf and propagated north‐west towards the Cape Verde islands. At depth, between 100‐400 m, the isolated anticyclone core contained relatively oxygenated, low salinity South Atlantic Central Water, while the surrounding water masses were saltier and poorly oxygenated. The dynamical and thermohaline subsurface environment favored the generation of fine‐scale horizontal and vertical temperature and salinity structures in and around the core of the anticyclone. These features exhibited horizontal scales of O(10‐30 km) relatively small with respect to the eddy radius of O(150 km). The vertical scales of O(5‐100 m) were associated to density‐compensated gradient. Spectra of salinity and oxygen along isopycnals revealed a slope of around k‐2 in the 10‐100 km horizontal scale range. Further analyses suggest that the fine‐scale structures are likely related to tracer stirring processes. Such mesoscale anticyclonic eddies and the embedded fine‐scale tracers in and around them could play a major role in the transport of South Atlantic Central Water masses and ventilation of the North Atlantic Oxygen Minimum Zone. |
format |
Text |
author |
Kolodziejczyk, Nicolas Testor, Pierre Lazar, Alban Echevin, Vincent Krahmann, Gerd Chaigneau, Alexis Gourcuff, Claire Wade, Malick Faye, Saliou Estrade, Philippe Capet, Xavier Mortier, Laurent Brehmer, Patrice Schuette, Florian Karstensen, Johannes |
author_facet |
Kolodziejczyk, Nicolas Testor, Pierre Lazar, Alban Echevin, Vincent Krahmann, Gerd Chaigneau, Alexis Gourcuff, Claire Wade, Malick Faye, Saliou Estrade, Philippe Capet, Xavier Mortier, Laurent Brehmer, Patrice Schuette, Florian Karstensen, Johannes |
author_sort |
Kolodziejczyk, Nicolas |
title |
Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
title_short |
Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
title_full |
Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
title_fullStr |
Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
title_full_unstemmed |
Subsurface fine scale patterns in an anticyclonic eddy off Cap-Vert peninsula observed from glider measurements |
title_sort |
subsurface fine scale patterns in an anticyclonic eddy off cap-vert peninsula observed from glider measurements |
publisher |
Amer Geophysical Union |
url |
https://doi.org/10.1029/2018JC014135 https://archimer.ifremer.fr/doc/00450/56162/57708.pdf https://archimer.ifremer.fr/doc/00450/56162/57709.pdf https://archimer.ifremer.fr/doc/00450/56162/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2018-09 , Vol. 123 , N. 9 , P. 6312-6329 |
op_relation |
doi:10.1029/2018JC014135 10670/1.f4bcv0 https://archimer.ifremer.fr/doc/00450/56162/57708.pdf https://archimer.ifremer.fr/doc/00450/56162/57709.pdf https://archimer.ifremer.fr/doc/00450/56162/ |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2018JC014135 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
123 |
container_issue |
9 |
container_start_page |
6312 |
op_container_end_page |
6329 |
_version_ |
1766127993213681664 |