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dc.contributor.authorReinaud, Jean N.
dc.date.accessioned2021-01-27T00:37:05Z
dc.date.available2021-01-27T00:37:05Z
dc.date.issued2020
dc.identifier264281373
dc.identifierbfcc7406-9458-4226-a807-3e1a0c1bcaef
dc.identifier85078449888
dc.identifier000509459100001
dc.identifier.citationReinaud , J N 2020 , ' Stability of filaments of uniform quasi-geostrophic potential vorticity ' , Geophysical and Astrophysical Fluid Dynamics , vol. 114 , no. 6 , pp. 798-820 . https://doi.org/10.1080/03091929.2019.1704752en
dc.identifier.issn0309-1929
dc.identifier.otherORCID: /0000-0001-5449-6628/work/68281500
dc.identifier.urihttps://hdl.handle.net/10023/21329
dc.description.abstractWe analyse the linear stability of filaments of uniform potential vorticity with a horizontal axis in a quasi- geostrophic flow. For a single filament, the situation corresponds to the simplest three-dimensional shear zone in a rapidly rotating, continuously stably stratified fluid. Yet, this has not been formally addressed to our knowledge. We show that the filament is sensitive to the Kelvin-Helmholtz instability for perturbations in a finite range of streamwise wavenumbers 0 < k < kc, similarly to the classical situation of a two- dimensional strip of uniform vorticity. We also analyse the stability of a jet formed by two parallel filaments of opposite PV whose axes are located on the same horizontal plane as well as the stability of "hetonic" filaments. Hetonic filaments consist of a pair of opposite PV filaments located at different heights. These can be sensitive to baroclinic instabilities over a wide range of longitudinal wavenumbers.
dc.format.extent21
dc.format.extent12451609
dc.language.isoeng
dc.relation.ispartofGeophysical and Astrophysical Fluid Dynamicsen
dc.subjectVortex dynamicsen
dc.subjectQuasi-geostrophyen
dc.subjectQA Mathematicsen
dc.subjectT-NDASen
dc.subject.lccQAen
dc.titleStability of filaments of uniform quasi-geostrophic potential vorticityen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doi10.1080/03091929.2019.1704752
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-01-27


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