Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/49870
DC FieldValueLanguage
dc.contributor.authorBenítez-Barrios, V. M.en_US
dc.contributor.authorPelegrí Llopart,José Luisen_US
dc.contributor.authorHernandez-Guerra, A.en_US
dc.contributor.authorLwiza, K. M.M.en_US
dc.contributor.authorGomis, D.en_US
dc.contributor.authorVélez-Belchí, P.en_US
dc.contributor.authorHernández-León, S.en_US
dc.contributor.otherPelegri, Josep-
dc.contributor.otherHernandez-Guerra, Alonso-
dc.contributor.otherVelez-Belchi, Pedro-
dc.contributor.otherGomis, Damia-
dc.date.accessioned2018-11-24T11:24:31Z-
dc.date.available2018-11-24T11:24:31Z-
dc.date.issued2011en_US
dc.identifier.issn0079-6611en_US
dc.identifier.urihttp://hdl.handle.net/10553/49870-
dc.description.abstractHigh-resolution data collected southeast of the Canary Islands during late winter 2006 are analyzed to describe the hydrography and three-dimensional circulation in the coastal transition zone off NW Africa. The data are optimally interpolated over a regular grid, the geostrophic velocity field is calculated and the Q-vector formulation of the omega equation is used to compute the quasi-geostrophic (QG) mesoscale vertical velocity. The coastal transition zone is divided into upwelling, frontal and offshore regions with distinct physical and dynamic characteristics. The upwelling region is characterized by cold and weakly stratified waters flowing towards the equator, with a poleward undercurrent of approximately 0.05 m s−1 over the continental slope. The frontal region exhibits a southwestward baroclinic jet associated with cross-shore raising isopycnals; the jet transport is close to 1 Sv, with maximum velocities of 0.18 m s−1 at surface decreasing to 0.05 m s−1 at 300 db. Vertical sections across the frontal region show the presence of deep eddies probably generated by the topographic blocking of the islands to the southward current, as well as much shallower eddies that likely have arisen as instabilities of the baroclinic upwelling jet. The QG mesoscale vertical velocity field is patchy, estimated to range from −18 to 12 m day−1, with the largest absolute values corresponding to an anticyclonic eddy located south of Fuerteventura Island. These values are significantly larger than estimates for other vertical velocities: diapycnal vertical velocities associated with mixing in the frontal region (a few meters per day), and wind-induced vertical velocities (non-linear Ekman pumping arising from the interaction between the wind stress and the background vorticity, maximum values of a few meters per day; linear Ekman pumping due to the divergence of Ekman transport, a fraction of a meter per day; or the coastal constraint in the upwelling region, about 0.7 m day−1). However, the patchiness in both the QG mesoscale vertical velocity and the non-linear Ekman pumping velocity cause their integrated vertical transports to be one order of magnitude smaller than either coastal Ekman transport (0.08 Sv), integrated linear Ekman pumping (−0.05 Sv) or diapycnal transfer (about 0.1–0.2 Sv). The pattern of the near-surface fluorescence field is a good indicator of these different contributions, with large homogeneous values in the coastal upwelling region and a patchy structure associated with the offshore mesoscale structures.en_US
dc.languageengen_US
dc.publisher0079-6611-
dc.relationConafrica: la Conexion Africana en la Corriente de Canariasen_US
dc.relation.ispartofProgress in Oceanographyen_US
dc.sourceProgress In Oceanography [ISSN 0079-6611], v. 91 (4), p. 516-533en_US
dc.subject2510 Oceanografíaen_US
dc.subject.otherAtlantic Subtropical Gyre
dc.subject.otherEastern Boundary Current
dc.subject.otherCanary-Islands Area
dc.subject.otherOceanographic Cruise Data
dc.subject.otherNorth-Atlantic
dc.subject.otherCalifornia Current
dc.subject.otherUpwelling Area
dc.subject.otherWater Masses
dc.subject.otherThermocline Circulation
dc.subject.otherPotential Vorticity
dc.titleThree-dimensional circulation in the NW Africa coastal transition zoneen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.pocean.2011.07.022
dc.identifier.scopus81455141329-
dc.identifier.isi000298202000011-
dcterms.isPartOfProgress In Oceanography-
dcterms.sourceProgress In Oceanography[ISSN 0079-6611],v. 91 (4), p. 516-533-
dc.contributor.authorscopusid24398599500-
dc.contributor.authorscopusid7003869003-
dc.contributor.authorscopusid6701736545-
dc.contributor.authorscopusid6602899249-
dc.contributor.authorscopusid7004418531-
dc.contributor.authorscopusid7801599223-
dc.contributor.authorscopusid6701465678-
dc.description.lastpage533-
dc.description.firstpage516-
dc.relation.volume91-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid2251871-
dc.contributor.daisngid358123-
dc.contributor.daisngid660191-
dc.contributor.daisngid1268709-
dc.contributor.daisngid558374-
dc.contributor.daisngid1378362-
dc.contributor.daisngid489706-
dc.identifier.investigatorRIDL-5815-2014-
dc.identifier.investigatorRIDA-4747-2008-
dc.identifier.investigatorRIDI-9150-2017-
dc.identifier.investigatorRIDNo ID-
dc.utils.revisionen_US
dc.contributor.wosstandardWOS:Benitez-Barrios, VM
dc.contributor.wosstandardWOS:Pelegri, JL
dc.contributor.wosstandardWOS:Hernandez-Guerra, A
dc.contributor.wosstandardWOS:Lwiza, KMM
dc.contributor.wosstandardWOS:Gomis, D
dc.contributor.wosstandardWOS:Velez-Belchi, P
dc.contributor.wosstandardWOS:Hernandez-Leon, S
dc.date.coverdateDiciembre 2011
dc.identifier.ulpgces
dc.description.sjr2,279
dc.description.jcr3,142
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.project.principalinvestigatorHernández León, Santiago Manuel-
crisitem.author.deptGIR IOCAG: Oceanografía Física-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Cambio Global-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0002-4883-8123-
crisitem.author.orcid0000-0002-3085-4969-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNamePelegrí Llopart, José Luis-
crisitem.author.fullNameHernández Guerra, Alonso-
crisitem.author.fullNameHernández León, Santiago Manuel-
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