What are they: eddies or waves?

Research output

Abstract

The problem of seasonal variability of oceanic fields still retains debatable question about distinction between, and, if any, the relative energetic contributions from synoptic eddies and different kinds of low-frequency waves. An essential difference between synoptic eddies and low-frequency waves seems to be that eddies transfer the water mass and have almost circular currents, while in waves only their shapes are moving, as fluid particles perform motions along very meridionally stretched, ellipse-like orbits. Occasionally, synoptic eddies have some signs of Rossby waves: they travel with a westward component of the phase speed, with space-time scales coincide quantitatively with dispersion relations of Rossby waves. Why it is so, is not uniquely answered yet. Some investigators assume that this may be explained from views of static dynamics, in which synoptic eddies are considered as a peculiar large-scale turbulence whose equation contains, both eddies that transfer the water with them and Rossby waves
Original languageEnglish
Pages (from-to)661-668
JournalInternational Multidisciplinary Scientific GeoConference-SGEM
Volume2
DOIs
Publication statusPublished - 2012

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