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dc.contributor.authorReinaud, Jean Noel
dc.identifier.citationReinaud , J N 2018 , ' The interaction of two co-rotating quasi-geostrophic vortices in the vicinity of a surface buoyancy filament ' , Geophysical and Astrophysical Fluid Dynamics , vol. 112 , no. 2 , pp. 130-155 .
dc.identifier.otherPURE: 251521757
dc.identifier.otherPURE UUID: b8b7f2b0-2600-4fe6-b556-2ed4f7ec844c
dc.identifier.otherScopus: 85036499249
dc.identifier.otherORCID: /0000-0001-5449-6628/work/39487838
dc.identifier.otherWOS: 000431551900002
dc.description.abstractIn this paper, we investigate the interaction between two like-signed quasi-geostrophic uniform potential vorticity internal vortices in the vicinity of a surface buoyancy anomaly filament in a three dimensional, stably stratified and rapidly rotating fluid. The surface buoyancy distribution locally modifies the pressure fields and generates a shear flow. We start the study by first considering the effects of a uniform linear horizontal shear on the binary vortex interaction. We confirm that a cooperative shear facilitates the merger of a pair of vortices while an adverse shear has the opposite effect. We next investigate the binary vortex interaction in the vicinity of the surface buoyancy filament explicitly. Here, not only the filament generates a shear flow, but it also responds dynamically to the forcing by the vortex pair. The filament destabilises and forms buoyancy billows at the surface. These billows interact with the internal vortices. In particular, a surface billow may pair with one of the internal vortices. In such cases, the like-signed internal vortex pair may separate if they are initially moderately distant from each other.
dc.relation.ispartofGeophysical and Astrophysical Fluid Dynamicsen
dc.rights© 2017, Informa UK Limited, trading as Taylor & Francis Group. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectVortex dynamicsen
dc.subjectVortex mergeren
dc.subjectSurface quasi-geostrophyen
dc.subjectQA Mathematicsen
dc.subjectQC Physicsen
dc.titleThe interaction of two co-rotating quasi-geostrophic vortices in the vicinity of a surface buoyancy filamenten
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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