Cyclones and Anticyclones in Seismic Imaging
Nearly all the subsurface eddies detected in seismic imaging of sections in the northeast Atlantic have been assumed to be anticyclones containing Mediterranean Water (MW). Fewer MW cyclones have been observed and studied. In this study, the work of previous numerical studies is extended to investig...
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ftarchimer:oai:archimer.ifremer.fr:39190 2023-05-15T17:32:48+02:00 Cyclones and Anticyclones in Seismic Imaging Barbosa Aguiar, A. C. Menesguen, Claire Le Gentil, Sylvie Schopp, Richard Carton, Xavier 2015-09 application/pdf https://archimer.ifremer.fr/doc/00281/39190/37746.pdf https://doi.org/10.1175/JPO-D-15-0066.1 https://archimer.ifremer.fr/doc/00281/39190/ eng eng Amer Meteorological Soc https://archimer.ifremer.fr/doc/00281/39190/37746.pdf doi:10.1175/JPO-D-15-0066.1 https://archimer.ifremer.fr/doc/00281/39190/ 2015 American Meteorological Society info:eu-repo/semantics/openAccess restricted use Journal Of Physical Oceanography (0022-3670) (Amer Meteorological Soc), 2015-09 , Vol. 45 , N. 9 , P. 2436-2443 Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Small scale processes Atm/Ocean Structure/ Phenomena Eddies Vortices Observational techniques and algorithms Acoustic measurements/effects Models and modeling Primitive equations model text Publication info:eu-repo/semantics/article 2015 ftarchimer https://doi.org/10.1175/JPO-D-15-0066.1 2021-09-23T20:26:41Z Nearly all the subsurface eddies detected in seismic imaging of sections in the northeast Atlantic have been assumed to be anticyclones containing Mediterranean Water (MW). Fewer MW cyclones have been observed and studied. In this study, the work of previous numerical studies is extended to investigate some characteristics of layering surrounding MW cyclones, using a primitive equation model with equal diffusivities for salinity and temperature to suppress the effects of double diffusion. It is shown that, after a stable state is reached, both anticyclones and cyclones display similar patterns of layering: stacked thin layers of high acoustic reflectivity located above and below the core of each vortex, which do not match isopycnals. The authors conclude that it should not be possible to distinguish between MW cyclones and anticyclones based on their signature in seismic imaging alone. Complementary information is needed to determine the sense of rotation. Article in Journal/Newspaper North Atlantic Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Journal of Physical Oceanography 45 9 2436 2443 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Small scale processes Atm/Ocean Structure/ Phenomena Eddies Vortices Observational techniques and algorithms Acoustic measurements/effects Models and modeling Primitive equations model |
spellingShingle |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Small scale processes Atm/Ocean Structure/ Phenomena Eddies Vortices Observational techniques and algorithms Acoustic measurements/effects Models and modeling Primitive equations model Barbosa Aguiar, A. C. Menesguen, Claire Le Gentil, Sylvie Schopp, Richard Carton, Xavier Cyclones and Anticyclones in Seismic Imaging |
topic_facet |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Small scale processes Atm/Ocean Structure/ Phenomena Eddies Vortices Observational techniques and algorithms Acoustic measurements/effects Models and modeling Primitive equations model |
description |
Nearly all the subsurface eddies detected in seismic imaging of sections in the northeast Atlantic have been assumed to be anticyclones containing Mediterranean Water (MW). Fewer MW cyclones have been observed and studied. In this study, the work of previous numerical studies is extended to investigate some characteristics of layering surrounding MW cyclones, using a primitive equation model with equal diffusivities for salinity and temperature to suppress the effects of double diffusion. It is shown that, after a stable state is reached, both anticyclones and cyclones display similar patterns of layering: stacked thin layers of high acoustic reflectivity located above and below the core of each vortex, which do not match isopycnals. The authors conclude that it should not be possible to distinguish between MW cyclones and anticyclones based on their signature in seismic imaging alone. Complementary information is needed to determine the sense of rotation. |
format |
Article in Journal/Newspaper |
author |
Barbosa Aguiar, A. C. Menesguen, Claire Le Gentil, Sylvie Schopp, Richard Carton, Xavier |
author_facet |
Barbosa Aguiar, A. C. Menesguen, Claire Le Gentil, Sylvie Schopp, Richard Carton, Xavier |
author_sort |
Barbosa Aguiar, A. C. |
title |
Cyclones and Anticyclones in Seismic Imaging |
title_short |
Cyclones and Anticyclones in Seismic Imaging |
title_full |
Cyclones and Anticyclones in Seismic Imaging |
title_fullStr |
Cyclones and Anticyclones in Seismic Imaging |
title_full_unstemmed |
Cyclones and Anticyclones in Seismic Imaging |
title_sort |
cyclones and anticyclones in seismic imaging |
publisher |
Amer Meteorological Soc |
publishDate |
2015 |
url |
https://archimer.ifremer.fr/doc/00281/39190/37746.pdf https://doi.org/10.1175/JPO-D-15-0066.1 https://archimer.ifremer.fr/doc/00281/39190/ |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Journal Of Physical Oceanography (0022-3670) (Amer Meteorological Soc), 2015-09 , Vol. 45 , N. 9 , P. 2436-2443 |
op_relation |
https://archimer.ifremer.fr/doc/00281/39190/37746.pdf doi:10.1175/JPO-D-15-0066.1 https://archimer.ifremer.fr/doc/00281/39190/ |
op_rights |
2015 American Meteorological Society info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1175/JPO-D-15-0066.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
45 |
container_issue |
9 |
container_start_page |
2436 |
op_container_end_page |
2443 |
_version_ |
1766131072538509312 |