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The alignment of two three-dimensional quasi-geostrophic vortices
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dc.contributor.author | Reinaud, Jean N. | |
dc.contributor.author | Carton, Xavier | |
dc.date.accessioned | 2020-08-24T23:34:16Z | |
dc.date.available | 2020-08-24T23:34:16Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Reinaud , J N & Carton , X 2020 , ' The alignment of two three-dimensional quasi-geostrophic vortices ' , Geophysical and Astrophysical Fluid Dynamics , vol. 114 , no. 4-5 , pp. 524-560 . https://doi.org/10.1080/03091929.2019.1653462 | en |
dc.identifier.issn | 0309-1929 | |
dc.identifier.other | PURE: 260407069 | |
dc.identifier.other | PURE UUID: 95ca303e-bc9e-42d5-86d6-56e9aee78292 | |
dc.identifier.other | ORCID: /0000-0001-5449-6628/work/61133117 | |
dc.identifier.other | Scopus: 85071195215 | |
dc.identifier.other | WOS: 000482678000001 | |
dc.identifier.uri | http://hdl.handle.net/10023/20510 | |
dc.description.abstract | We consider the interaction between two quasi-geostrophic vortices of height-to-width aspect ratio h/r, lying at two different vertical levels. We investigate whether such structures naturally align. In the case the vortices occupy distinct yet contiguous vertical levels, such an alignment can contribute to the growth in volume of oceanic mesoscale vortices. The other growth mechanism is the merger of vortices sharing common vertical levels. We show that there exist titled equilibrium states where vortices nearly align slantwise. Most equilibria for prolate vortices (h/r > 1) are stable apart in a very narrow region of the parameter space. The instability is however normally non-destructive. Pairs of oblate vortices may also be in an unstable equilibria if they are moderately offset in the horizontal direction. In this case, the instability may result in the shedding of filamentary potentially vorticity away from the vortices. This shedding of potential vorticity may result in the further alignment of the main structures. | |
dc.format.extent | 33 | |
dc.language.iso | eng | |
dc.relation.ispartof | Geophysical and Astrophysical Fluid Dynamics | en |
dc.rights | Copyright © 2019 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 https://doi.org/10.1080/03091929.2019.1653462 | en |
dc.subject | Vortex dynamics | en |
dc.subject | Vortex alignment | en |
dc.subject | Quasi-geostophy | en |
dc.subject | QA Mathematics | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | T-NDAS | en |
dc.subject.lcc | QA | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | The alignment of two three-dimensional quasi-geostrophic vortices | en |
dc.type | Journal article | en |
dc.description.version | Postprint | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. Applied Mathematics | en |
dc.identifier.doi | https://doi.org/10.1080/03091929.2019.1653462 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2020-08-25 |
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