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Topological origin of equatorial waves
A topological origin is shown for two well-known equatorially trapped waves, the Kelvin and Yanai modes, owing to the breaking of time-reversal symmetry by Earth's rotation, which demonstrates that ocean and atmospheric waves share fundamental properties with topological insulators and that topology plays an unexpected role in Earth's climate system.
Baroclinic Turbulence in the Ocean: Analysis with Primitive Equation and Quasigeostrophic Simulations
AbstractThis paper examines the factors determining the distribution, length scale, magnitude, and structure of mesoscale oceanic eddies in an eddy-resolving primitive equation simulation of the
Experimental observation of a strong mean flow induced by internal gravity waves
We report the experimental observation of a robust horizontal mean flow induced by internal gravity waves. A wave beam is forced at the lateral boundary of a tank filled with a linearly stratified
Bottom-trapped currents as statistical equilibrium states above topographic anomalies
  • A. Venaille
  • Physics, Environmental Science
    Journal of Fluid Mechanics
  • 28 February 2012
Abstract Oceanic geostrophic turbulence is mostly forced at the surface, yet strong bottom-trapped flows are commonly observed along topographic anomalies. Here we consider the case of a freely
Instabilities of Internal Gravity Wave Beams
Internal gravity waves play a primary role in geophysical fluids: They contribute significantly to mixing in the ocean, and they redistribute energy and momentum in the middle atmosphere. Until
A dynamical equation for the distribution of a scalar advected by turbulence
A phenomenological model for the dissipation of scalar fluctuations due to the straining by the fluid motion is proposed in this Brief Communication. An explicit equation is obtained for the time
Stochastic variability of oceanic flows above topography anomalies
We describe a stochastic variability mechanism which is genuinely internal to the ocean, i.e., not due to fluctuations in atmospheric forcing. The key ingredient is the existence of closed contours
The catalytic role of the beta effect in barotropization processes
Abstract The vertical structure of freely evolving, continuously stratified, quasi-geostrophic flow is investigated. We predict the final state organization, and in particular its vertical structure,