Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/36062
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dc.contributor.authorBarceló-Llull, Bàrbaraen_US
dc.contributor.authorPallàs-Sanz, Enricen_US
dc.contributor.authorSangrà, Pabloen_US
dc.contributor.authorMartínez-Marrero, Antonioen_US
dc.contributor.authorEstrada-Allis, Sheila N.en_US
dc.contributor.authorArístegui, Javieren_US
dc.contributor.otherMartinez-Marrero, Antonio
dc.contributor.otherAristegui, Javier
dc.contributor.otherBarcelo-Llull, Barbara
dc.date.accessioned2018-05-14T12:17:45Z-
dc.date.available2018-05-14T12:17:45Z-
dc.date.issued2017en_US
dc.identifier.issn0022-3670en_US
dc.identifier.urihttp://hdl.handle.net/10553/36062-
dc.description.abstractVertical motions play a key role in the enhancement of primary production within mesoscale eddies through the introduction of nutrients into the euphotic layer. However, the details of the vertical velocity field w driving these enhancements remain under discussion. For the first time the mesoscale w associated with an intrathermocline eddy is computed and analyzed using in situ high-resolution three-dimensional (3D) fields of density and horizontal velocity by resolving a generalized omega equation valid for high Rossby numbers. In the seasonal pycnocline the diagnosed w reveals a multipolar structure with upwelling and downwelling cells located at the eddy periphery. In the main pycnocline w is characterized by a dipolar structure with downwelling velocities upstream of the propagation path and upwelling velocities downstream. Maximum values of w reach 6.4 m day(-1). An observed enhancement of chlorophyll-a at the eddy periphery coincides with the location of the upwelling and downwelling cells. Analysis of the forcing terms of the generalized omega equation indicates that the mechanisms behind the dipolar structure of the w field are a combination of horizontal deformation and advection of vertical relative vorticity by ageostrophic vertical shear. The wind during the eddy sampling was rather constant and uniform with a speed of 5 m s(-1). Diagnosed nonlinear Ekman pumping leads to a dipolar pattern that mirrors the inferred w. Horizontal ageostrophic secondary circulation is dominated by centripetal acceleration and closes the dipole w structure. Vertical fluxes act to maintain the intrathermocline eddy structure.en_US
dc.languageengen_US
dc.relation.ispartofJournal of Physical Oceanographyen_US
dc.sourceJournal of Physical Oceanography[ISSN 0022-3670],v. 47, p. 1107-1123en_US
dc.subject251007 Oceanografía físicaen_US
dc.subject.otherVertical Motion
dc.subject.otherPotential Vorticity
dc.subject.otherMesoscale Eddies
dc.subject.other3-Dimensional Circulation
dc.subject.otherSatellite-Observations
dc.subject.otherOmega Equation
dc.subject.otherGulf-Stream
dc.subject.otherDiagnosis
dc.subject.otherVelocity
dc.subject.otherFront
dc.titleAgeostrophic secondary circulation in a subtropical intrathermocline eddyen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeinfo:eu-repo/semantics/Articlees
dc.typeArticlees
dc.identifier.doi10.1175/JPO-D-16-0235.1
dc.identifier.scopus85019226729
dc.identifier.isi000401462000009
dcterms.isPartOfJournal Of Physical Oceanography
dcterms.sourceJournal Of Physical Oceanography[ISSN 0022-3670],v. 47 (5), p. 1107-1123
dc.contributor.authorscopusid56006182500
dc.contributor.authorscopusid36873434600
dc.contributor.authorscopusid55938118400
dc.contributor.authorscopusid24390812600
dc.contributor.authorscopusid55953934900
dc.contributor.authorscopusid7006816204
dc.identifier.eissn1520-0485-
dc.description.lastpage1123-
dc.identifier.issue5-
dc.description.firstpage1107-
dc.relation.volume47-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.identifier.wosWOS:000401462000009-
dc.contributor.daisngid7411567
dc.contributor.daisngid20773809
dc.contributor.daisngid763696
dc.contributor.daisngid3334122
dc.contributor.daisngid4990325
dc.contributor.daisngid5781271
dc.contributor.daisngid227201
dc.identifier.investigatorRIDQ-6714-2017
dc.identifier.investigatorRIDD-5833-2013
dc.identifier.investigatorRIDNo ID
dc.contributor.wosstandardWOS:Barcelo-Llull, B
dc.contributor.wosstandardWOS:Pallas-Sanz, E
dc.contributor.wosstandardWOS:Sangra, P
dc.contributor.wosstandardWOS:Martinez-Marrero, A
dc.contributor.wosstandardWOS:Estrada-Allis, SN
dc.contributor.wosstandardWOS:Aristegui, J
dc.date.coverdateMayo 2017
dc.identifier.ulpgces
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptIOCAG: Oceanografía Física-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptOceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0002-2376-1561-
crisitem.author.orcid0000-0002-0005-4629-
crisitem.author.orcid0000-0002-7526-7741-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameMartínez Marrero, Antonio-
crisitem.author.fullNameEstrada Allis, Sheila Natali-
crisitem.author.fullNameArístegui Ruiz, Javier-
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