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A. C. Barbosa Aguiar, C. Ménesguen, S. Le Gentil, R. Schopp, and X. Carton

Carton et al. (2002) , maximal T and S within the cyclone were of 12°C and 36.2 psu, whereas in the meddy maxima values were of 12.5°C and 36.5 psu. In the same study, the thermohaline and velocity cores of the cyclone were located between 600 and 1300 m, at shallower depths than those of the meddies (750–1500 m), while the radii of the structures were comparable and about 30–35 km. In images of acoustic reflectivity of the water column, meddies appear imprinted as distinct elliptical contours

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Thomas Meunier, Enric Pallàs Sanz, Miguel Tenreiro, José Ochoa, Angel Ruiz Angulo, and Christian Buckingham

interactions, including splitting, as they reach the western GoM’s platform, also referred to as the eddy graveyard ( Biggs and Müller-Karger 1994 ), and the importance of topographic effects in the spindown of LCEs and the diffusion of their tracers is supported by observations of increased diapycnal mixing over the GoM’s sloping boundaries ( Ledwell et al. 2016 ; Dickinson et al. 2017 ). However, Lipphardt et al. (2008) showed, using surface drifters and numerical modeling, that some LCEs experience

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Thomas Meunier, Claire Ménesguen, Richard Schopp, and Sylvie Le Gentil

rotation axis. (b) Associated spice (black) and density (green) perturbation. Layering in tracer fields is observed above and below the meddy. Salinity effects on density compensate temperatures at 90% in the filtered density field. T , S , and the density have been filtered with a high-pass filter (<200 m). Even though some small-scale layering is noticeable in the density anomaly signal, much larger amplitudes are obvious in the salinity and temperature contributions. The compensation of the latter

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