Abstract: Data from the Tourbillon Experiment Intensive Period in the northeast Atlantic presented evidence of a vertical phase shift with time of the main eddy, interpreted as an occurrence of internal barotropic instability. In ...

Abstract: Gent and McWilliams have identified the mechanism of internal barotropic instability for axisymmetric vortices which are purely barotropic, but are immersed in a stratified environment. The energy source is the kinetic ...

Abstract: An attempt is made to explain the fixed locations of coastal upwelling centers in the Gulf of Lions as a function of the coastline geometry alone. The semi-implicit numerical model, based on two-layer shallow water equations, ...

Abstract: The anticipated potential Vorticity method (APV) is a parameterization of the effects of subgrid or unresolved scales on those explicitly resolved for barotropic, quasi-geostrophic and certain types of primitive equation ...

Abstract: The quasi-geostrophic response to stochastic wind fluctuations is calculated using a doubly periodic nonlinear model, with a vertical resolution of three modes in most cases. The influence of various parameters on the ...

Abstract: A fully three-dimensional primitive equation simulation is performed to ?reunite? the local equatorial dynamics of the subsurface countercurrents (SCCs) and thermostad with the large-scale tropical ventilated ocean dynamics. ...

Abstract: Sensitivity tests are performed to assess the respective influences of the large-scale ventilation and of the near-equatorial winds on the dynamics of the the subsurface countercurrents (SCCs) and thermostad. They show ...

Abstract: From a numerical simulation of the Atlantic Ocean, Jochum and Malanotte-Rizzoli provide evidence that the equatorial subsurface countercurrents can be triggered by tropical instability waves through eddy?mean flow interactions ...

Abstract: Potential vorticity (PV) conservation implies a strong constraint on the time evolution of the mean density at a given depth. The authors show that, on an f plane and in the absence of sources and sinks of PV, it only ...

Abstract: Time series of high vertical resolution current meter measurements between 600-m and 1800-m depths on the equator in the Atlantic were obtained at two locations, 10° and 23°W. The measurements have a time span of almost 7 ...