Show simple item record

Files in this item


Item metadata

dc.contributor.authorOulhen, Erwan
dc.contributor.authorReinaud, Jean Noel
dc.contributor.authorCarton, Xavier
dc.identifier.citationOulhen , E , Reinaud , J N & Carton , X 2022 , ' Formation of small-scale vortices in the core of a large merged vortex ' , Geophysical and Astrophysical Fluid Dynamics , vol. Latest Articles .
dc.identifier.otherPURE: 279382725
dc.identifier.otherPURE UUID: 0ced4f2d-c956-49ef-b7bb-2800b9d26bca
dc.identifier.otherORCID: /0000-0001-5449-6628/work/114335745
dc.identifier.otherScopus: 85131058884
dc.identifier.otherWOS: 000800205000001
dc.descriptionFunding: We thank LOPS and UBO for a M.Sc internship grant which allowed the first author to carry out this work.en
dc.description.abstractThe merger of two surface quasi-geostrophic vortices is examined in detail. As the two vortices collapse towards each other in the merging process, they trap their external fronts between them; these fronts are inserted into the final merged vortex, where they form a central, nearly parallel, sheared velocity strip, sensitive to barotropic instability. As a result, this strip breaks up into an alley of small vortices. Subsequently, these small vortices may undergo merger and grow in size in the core of the large merged vortex. The number of small trapped vortices decreases correspondingly. Finally, a single or two small vortices remain. These processes are analysed using a numerical model of the surface quasi-geostrophic equations. The sensitivity of this process to the initial vortex characteristics is explored. A parallel is drawn between this problem and the instability of a rectilinear strip of temperature with a central gap. The application of this problem to the Ocean is discussed.
dc.relation.ispartofGeophysical and Astrophysical Fluid Dynamicsen
dc.rightsCopyright © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.subjectSurface quasi-geostrophyen
dc.subjectVortex mergeren
dc.subjectBarotropic instabilityen
dc.subjectSmall vorticesen
dc.subjectCore tappingen
dc.subjectQA Mathematicsen
dc.subjectQC Physicsen
dc.titleFormation of small-scale vortices in the core of a large merged vortexen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record