Quasi-geostrophic vortex vertical alignment in near collapse interactions

Jean Noel Reinaud*, Xavier Carton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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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 languageEnglish
Pages (from-to)292-314
Number of pages23
JournalGeophysical and Astrophysical Fluid Dynamics
Volume117
Issue number5
Early online date10 Aug 2023
DOIs
Publication statusPublished - 10 Aug 2023

Keywords

  • Quasi-geostrophy
  • Vortex alignment
  • Vortex collapse

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