Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/48194
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dc.contributor.authorRodríguez-Santana, A.en_US
dc.contributor.authorPelegrí Llopart,José Luisen_US
dc.contributor.authorSangrá Inciarte, Pabloen_US
dc.contributor.authorMarrero-Díaz, A.en_US
dc.contributor.otherRodriguez-Santana, Angel-
dc.contributor.otherMarrero-Diaz, Angeles-
dc.contributor.otherPelegri, Josep-
dc.contributor.otherSangra, Pablo-
dc.date.accessioned2018-11-23T19:40:59Z-
dc.date.available2018-11-23T19:40:59Z-
dc.date.issued1999en_US
dc.identifier.issn0148-0227en_US
dc.identifier.urihttp://hdl.handle.net/10553/48194-
dc.description.abstractWe use historical data [Bane et at., 1981], interpolated to isopycnic coordinates, to examine the possibility of significant diapycnal mixing within the upper thermocline layers of the Gulf Stream. The data consist of 28 air-dropped expendable bathythermograph (AXBT) sections in the northern Blake Plateau distributed in five different surveys done within 8 days. From the data we obtain a separation index between isopycnMs j = p Oz/Op, where z is the depth of an isopycnM and p is the density; the diapycnal shear Ov/Op, where v is the geostrophic velocity; and the gradient Richardson number Ri. Following Pelegri and Csanady [1994], we postulate that the material derivative of the density, or density tendency wp = Dp/Dt, is the result of small-scale instabilities related to near-critical Ri values. We present the distribution of these quantities (j, Ov/Op, Ri, and wp) and the diapycnal convergence/divergence (Owp/Op) over isopycnals and on sections normal to the coast. The results show the passage of steep meanders being related to anomalously low j values (strong density gradients) within the upper thermocline layers and the cyclonic filaments of the stream. The statically stable upper thermocline layers, however, are concurrent with large diapycnal shear and turn out to be dynamically unstable, characterized by low Ri and high-density tendencies and diapycnal convergence/divergence. The errors involved in calculating the dependent variables from AXBT data are assessed using both an error propagation approach and a Monte Carlo error simulation. These errors, although significant, are not large enough to modify the observed patterns substantiallyen_US
dc.languageengen_US
dc.relation.ispartofJournal of Geophysical Researchen_US
dc.sourceJournal of Geophysical Research: Oceans [ISSN 0148-0227],v. 104, p. 25891-25912en_US
dc.subject251007 Oceanografía físicaen_US
dc.subject.otherGulf streamen_US
dc.titleDiapycnal mixing in Gulf Stream meandersen_US
dc.typeinfo:eu-repo/semantics/Articlees
dc.typeArticlees
dc.identifier.doi10.1029/1999JC900219en_US
dc.identifier.scopus0033571826-
dc.identifier.isi000083653400018-
dcterms.isPartOfJournal Of Geophysical Research-Oceans
dcterms.sourceJournal Of Geophysical Research-Oceans[ISSN 0148-0227],v. 104 (C11), p. 25891-25912
dc.contributor.authorscopusid6506514177-
dc.contributor.authorscopusid7003869003-
dc.contributor.authorscopusid6602684473-
dc.contributor.authorscopusid6507074043-
dc.description.lastpage25912-
dc.identifier.issue1999JC900219-
dc.description.firstpage25891-
dc.relation.volume104-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid1821092-
dc.contributor.daisngid358123-
dc.contributor.daisngid763696-
dc.contributor.daisngid1846069-
dc.identifier.investigatorRIDH-8596-2015-
dc.identifier.investigatorRIDH-2175-2015-
dc.identifier.investigatorRIDL-5815-2014-
dc.identifier.investigatorRIDNo ID-
dc.utils.revisionen_US
dc.contributor.wosstandardWOS:Rodriguez-Santana, A
dc.contributor.wosstandardWOS:Pelegri, JL
dc.contributor.wosstandardWOS:Sangra, P
dc.contributor.wosstandardWOS:Marrero-Diaz, A
dc.date.coverdateNoviembre 1999
dc.identifier.ulpgces
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptGIR Oceanografía Física y Geofísica Aplicada-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptGIR Oceanografía Física y Geofísica Aplicada-
crisitem.author.deptDepartamento de Física-
crisitem.author.orcid0000-0003-1960-6777-
crisitem.author.orcid0000-0001-7697-0036-
crisitem.author.parentorgDepartamento de Física-
crisitem.author.parentorgDepartamento de Física-
crisitem.author.fullNameRodríguez Santana, Ángel-
crisitem.author.fullNamePelegrí Llopart, José Luis-
crisitem.author.fullNameSangrá Inciarte, Pablo-
crisitem.author.fullNameMarrero Díaz, María De Los Ángeles-
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