Experimental evidence for a new instability of a vertical columnar vortex pair in a strongly stratified fluid

By P. Billant, Jean-Marc Chomaz. Journal of Fluid Mechanics, 2000

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Dynamics and Instabilities of Vortex Pairs (2016, background): “Vertical Pairs Counter- and corotating vertical pairs in strong stratification exhibit a Crow-type zigzag instability, involving antisymmetric and symmetric displacements, respectively (Williamson & Chomaz 1997, Billant & Chomaz 2000, Otheguy et al. 2006).”
Stably Stratified Atmospheric Boundary Layers (2014, background): “Laboratory and numerically simulated two-dimensional modes can be characterized by significant vertical coherence, such as columnar vortices (Billant & Chomaz 2000) that are vulnerable to breakdown through instability.”
Scaling analysis and simulation of strongly stratified turbulent flows (2007, background): “This ensures that the large-scale, purely two-dimensional vortices induced by the forcing can become unstable through a mechanism such as the zigzag instability ( Billant & Chomaz 2000a ) leading to the spontaneous development of layers.”
Cascades and transitions in turbulent flows (2018, background): “This transition can be understood by noting that stratified turbulence leads to the formation of layers of width `z ' in`in/N [297, 319].”
Stratified turbulence dominated by vortical motion (2004, background): “Thoroddsen & Atta 1992; Fincham, Maxworthy & Spedding 1996; Billant & Chomaz 2000 ).”