Quasi-geostrophic vortex vertical alignment in near collapse interactions

Jean Noel Reinaud; Xavier Carton

doi:10.1080/03091929.2023.2242571

Quasi-geostrophic vortex vertical alignment in near collapse interactions

Jean Noel Reinaud^*, Xavier Carton

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We consider a three-vortex interaction which leads to the vertical alignment of two like-signed quasi- geostrophic vortices in a continuously stratified, rotating fluid. The interaction is close to the classical collapse interaction of three co-planar vortices except that the vortices centres move on close but different horizontal planes. The vertical alignment of vortices helps create larger structures and contributes in physical space to the inverse energy cascade observed in spectral space in geostrophic turbulence.

Original language	English
Pages (from-to)	292-314
Number of pages	23
Journal	Geophysical and Astrophysical Fluid Dynamics
Volume	117
Issue number	5
Early online date	10 Aug 2023
DOIs	https://doi.org/10.1080/03091929.2023.2242571
Publication status	Published - 10 Aug 2023

Keywords

Quasi-geostrophy
Vortex alignment
Vortex collapse

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10.1080/03091929.2023.2242571Licence: CC BY

Reinaud_2023_GAFD_Quasi-geostrophic_CC
Copyright © 2023 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 (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 5.14 MBLicence: CC BY

Quasi-geostrophic vortex vertical alignment in near collapse interactions
Reinaud, J. N. (Creator) & Carton, X. (Creator), University of St Andrews, 23 Oct 2023
DOI: 10.17630/f5d02807-6edd-4d1c-8d26-a11402eac814
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AB - We consider a three-vortex interaction which leads to the vertical alignment of two like-signed quasi- geostrophic vortices in a continuously stratified, rotating fluid. The interaction is close to the classical collapse interaction of three co-planar vortices except that the vortices centres move on close but different horizontal planes. The vertical alignment of vortices helps create larger structures and contributes in physical space to the inverse energy cascade observed in spectral space in geostrophic turbulence.

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Quasi-geostrophic vortex vertical alignment in near collapse interactions

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Keywords

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Quasi-geostrophic vortex vertical alignment in near collapse interactions

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