Interaction between a surface jet and subsurface vortices in a three-layer quasi-geostrophic model

Sokolovskiy, Mikhail; Carton, Xavier; Filyushkin, B. N.; Yakovenko, O. I.

doi:10.1080/03091929.2016.1164148

Cited by 13 publications

(7 citation statements)

References 68 publications

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“…Alignment processes are also discussed in Ferrari and Paparella (2003), Haney et al (2015), Itoh and Yasuda (2010), Tanahashi et al (2001). Finally vertical alignment has been observed in geophysical turbulence by McWilliams (1989), McWilliams and Weiss (1994), in complex vortex interactions by Perrot et al (2010), Sokolovskiy and Carton (2010), Viúdez (2010), Sokolvskiy and Verron (2014), Sokolovskiy et al (2016) and in the oceans by Tychensky and Carton (1998) as well as in the laboratory experiments by Nof and Dewar (1994).…”

Section: Introductionmentioning

confidence: 84%

The alignment of two three-dimensional quasi-geostrophic vortices

Reinaud

Carton

2019

Geophysical & Astrophysical Fluid Dynamics

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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.

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Section: Introductionmentioning

confidence: 84%

The alignment of two three-dimensional quasi-geostrophic vortices

Reinaud

Carton

2019

Geophysical & Astrophysical Fluid Dynamics

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“…This configuration allows us to study the advection of upper-layer fluid particles perturbed by the periodic motion of the lower-layer vortices. This model thus may help shed light into the problem of identifying the signs of the subsurface vortices by their imprints on the ocean surface advection [6,93,[155][156][157][158][159][160][161][162].…”

Section: Fluid Particle Advection In Singular Vortex Systems In Layermentioning

confidence: 99%

Vortex Interactions Subjected to Deformation Flows: A Review

Koshel

Ryzhov

Carton

2019

Fluids

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Deformation flows are the flows incorporating shear, strain and rotational components. These flows are ubiquitous in the geophysical flows, such as the ocean and atmosphere. They appear near almost any salience, such as isolated coherent structures (vortices and jets) and various fixed obstacles (submerged obstacles and continental boundaries). Fluid structures subject to such deformation flows may exhibit drastic changes in motion. In this review paper, we focus on the motion of a small number of coherent vortices embedded in deformation flows. Problems involving isolated one and two vortices are addressed. When considering a single-vortex problem, the main focus is on the evolution of the vortex boundary and its influence on the passive scalar motion. Two vortex problems are addressed with the use of point vortex models, and the resulting stirring patterns of neighbouring scalars are studied by a combination of numerical and analytical methods from the dynamical system theory. Many dynamical effects are reviewed with emphasis on the emergence of chaotic motion of the vortex phase trajectories and the scalars in their immediate vicinity.

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Section: Fluid Particle Advection In Singular Vortex Systems In Layermentioning

confidence: 99%

Vortex Interactions Subjected to Deformation Flows: A Review

Koshel¹,

Ryzhov²,

Carton³

2018

Preprint

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Deformation flows are flows incorporating shear, strain and rotational components. These flows are ubiquitous in the geophysical flows, such as the ocean and atmosphere. They appear near almost any salience, such as isolated coherent structures (vortices and jets), various fixed obstacles (submerged obstacles, continental boundaries). Fluid structures subject to such deformation flows may exhibit drastic changes in motion. In this review paper, we focus on the motion of a small number of coherent vortices embedded in deformation flows. Problems involving isolated one and two vortices are addressed. When considering a single-vortex problem, the main focus is on the evolution of the vortex boundary and its influence on the passive scalar motion. Two vortex problems are addressed with the use of point vortex models, and the resulting stirring patterns of neighbouring scalars are studied by a combination of numerical and analytical methods from the dynamical system theory. Many dynamical effects are reviewed with emphasis on the emergence of chaotic motion of the vortex phase trajectories and the scalars in their immediate vicinity.

show abstract

Interaction between a surface jet and subsurface vortices in a three-layer quasi-geostrophic model

Cited by 13 publications

References 68 publications

The alignment of two three-dimensional quasi-geostrophic vortices

The alignment of two three-dimensional quasi-geostrophic vortices

Vortex Interactions Subjected to Deformation Flows: A Review

Vortex Interactions Subjected to Deformation Flows: A Review

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