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Shapiro, Gi; Zenk, W; Meschanov, Sl; Tokos, Kls. |
In this study we analyze two groups of Mediterranean salt lenses: ''mid-life'' lenses, typically 1-2 years old, observed in the Canary Basin, and younger Meddies from the Iberian Basin. In contrast to turbulent features, vortex lenses have a clear coherent structure in the temperature and salinity fields. This physical property supports the hypothesis that a mathematical description with only a few degrees of freedom may exist. We use nonlinear transformation of variables to find a unique function describing vertical profiles at different locations inside the lens. When this function is found, its existence is considered as ''self-similarity'' of the lens structure. We also found a common function that describes each group of Meddy, Canary and Iberian, and... |
Tipo: Text |
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Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00097/20779/18403.pdf |
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Arhan, Michel; Carton, Xavier; Piola, A; Zenk, W. |
[1] Three deep anticyclonic eddies of a species only reported once before [Gordon and Greengrove, 1986] were intersected by hydrographic lines of the World Ocean Circulation Experiment (WOCE) and South Atlantic Ventilation Experiment (SAVE) programs in the Argentine Basin. The vortices are centered near 3500 m depth at the interface between North Atlantic Deep Water and Bottom Water. They have similar to1500-m-thick cores containing Lower Circumpolar Deep Water and a dynamical influence that may span up to two thirds of the water column. As one eddy was observed just downstream of the western termination of the Falkland Escarpment, a destabilization of the deep boundary current by the sudden slope relaxation is suggested as a potential cause of eddy... |
Tipo: Text |
Palavras-chave: Eddies and mesoscale processes; Western boundary currents; Hydrography. |
Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00000/10057/7797.pdf |
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