On eddy polarity distribution in the southwestern Atlantic
Eddies in the southwestern Atlantic were detected from more than 18 years of satellite altimetry data using a modified version of the Okubo-Weiss method. The spatial distribution and polarity of eddies were examined. A larger concentration of cyclonic (anticyclonic) eddies was found on the left (rig...
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2012
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| LEADER | 11766caa a22011297a 4500 | ||
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| 001 | PAPER-9224 | ||
| 003 | AR-BaUEN | ||
| 005 | 20250217112646.0 | ||
| 008 | 190411s2012 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84866519216 | |
| 030 | |a DRORE | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Saraceno, Martín | |
| 245 | 1 | 3 | |a On eddy polarity distribution in the southwestern Atlantic |
| 260 | |c 2012 | ||
| 270 | 1 | 0 | |m Saraceno, M.; Centro de Investigaciones del Mar y la Atmósfera, CIMA/CONICET-UBA, DCAO/FCEN-UBA, UMI-IFAECI/CNRS-CONICET-UBA, Ciudad Universitaria Pabellón II Piso 2, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina; email: saraceno@cima.fcen.uba.ar |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a Eddies in the southwestern Atlantic were detected from more than 18 years of satellite altimetry data using a modified version of the Okubo-Weiss method. The spatial distribution and polarity of eddies were examined. A larger concentration of cyclonic (anticyclonic) eddies was found on the left (right) side when looking downstream on some of the largest current systems in the region, such as the South Atlantic Current, the anticyclonic circulation associated with the Zapiola Drift (ZD) and the northern branch of the Antarctic Circumpolar Current. In the region isolated by the anticyclonic Zapiola Current, 91% of eddies were cyclonic. The observed distribution of eddies is in agreement with the generation of eddies from meanders of the above-mentioned currents: cyclonic (anticyclonic) eddies might detach from a meander of the current on the left (right) side when looking downstream on the current. Furthermore, in the ZD area, the bottom topography plays a key role in determining the trajectory of eddies: the anticyclonic current associated with the ZD meanders and eventually generates a cyclonic eddy that enters the ZD region only across the northeastern border, where the gradient of potential vorticity is lower. Finally, average surface chlorophyll-a concentration inside cyclonic and anticyclonic eddies shows that the former have higher chlorophyll-a values. Thus, on average, the classical eddy-pumping theory explains the difference in chlorophyll-a concentration within eddies in the southwestern Atlantic. © 2012 Elsevier Ltd. |l eng | |
| 593 | |a Centro de Investigaciones del Mar y la Atmósfera, CIMA/CONICET-UBA, DCAO/FCEN-UBA, UMI-IFAECI/CNRS-CONICET-UBA, Ciudad Universitaria Pabellón II Piso 2, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina | ||
| 593 | |a Lab. d'Oceanographie et du Climat: Expérimentation et Approche Numerique (LOCEAN), UMR 7159, Université Pierre et Marie Curie, T 45-46, 5E, 4 place Jussieu, 75005 Paris, France | ||
| 690 | 1 | 0 | |a EDDIES |
| 690 | 1 | 0 | |a SOUTHWESTERN ATLANTIC |
| 690 | 1 | 0 | |a ZAPIOLA DRIFT |
| 690 | 1 | 0 | |a ANTARCTIC CIRCUMPOLAR CURRENTS |
| 690 | 1 | 0 | |a ANTICYCLONIC CIRCULATION |
| 690 | 1 | 0 | |a ANTICYCLONIC EDDIES |
| 690 | 1 | 0 | |a BOTTOM TOPOGRAPHY |
| 690 | 1 | 0 | |a CHLOROPHYLL A |
| 690 | 1 | 0 | |a CHLOROPHYLL-A CONCENTRATION |
| 690 | 1 | 0 | |a CYCLONIC EDDY |
| 690 | 1 | 0 | |a EDDIES |
| 690 | 1 | 0 | |a POTENTIAL VORTICITY |
| 690 | 1 | 0 | |a SATELLITE ALTIMETRY DATA |
| 690 | 1 | 0 | |a SOUTH ATLANTIC |
| 690 | 1 | 0 | |a SOUTHWESTERN ATLANTIC |
| 690 | 1 | 0 | |a ZAPIOLA DRIFT |
| 690 | 1 | 0 | |a OCEAN CURRENTS |
| 690 | 1 | 0 | |a CHLOROPHYLL |
| 690 | 1 | 0 | |a ANTICYCLONE |
| 690 | 1 | 0 | |a BOTTOM TOPOGRAPHY |
| 690 | 1 | 0 | |a CHLOROPHYLL A |
| 690 | 1 | 0 | |a CIRCUMPOLAR CURRENT |
| 690 | 1 | 0 | |a CONCENTRATION (COMPOSITION) |
| 690 | 1 | 0 | |a EDDY |
| 690 | 1 | 0 | |a POTENTIAL VORTICITY |
| 690 | 1 | 0 | |a SATELLITE ALTIMETRY |
| 690 | 1 | 0 | |a SPATIAL DISTRIBUTION |
| 690 | 1 | 0 | |a ATLANTIC OCEAN |
| 690 | 1 | 0 | |a ATLANTIC OCEAN (SOUTHWEST) |
| 690 | 1 | 0 | |a ZAPIOLA RISE |
| 700 | 1 | |a Provost, C. | |
| 773 | 0 | |d 2012 |g v. 69 |h pp. 62-69 |p Deep-Sea Res. Part I Oceanogr. Res. Pap. |x 09670637 |w (AR-BaUEN)CENRE-4388 |t Deep-Sea Research Part I: Oceanographic Research Papers | |
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