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The counterpropagating Rossby wave perspective on Kelvin Helmholtz instability as a limiting case of a Rayleigh shear layer with zero width

By E. Heifetz, Y. Reuveni, A. Gelfgat, E. Kit and J. Methven

Abstract

The Kelvin Helmholtz (KH) problem, with zero stratification, is examined as a limiting case of the Rayleigh model of a single shear layer whose width tends to zero. The transition of the Rayleigh modal dispersion relation to the KH one, as well as the disappearance of the supermodal transient growth in the KH limit, are both rationalized from the counterpropagating Rossby wave perspective

Topics: 551
Publisher: American Institute of Physics
Year: 2006
OAI identifier: oai:centaur.reading.ac.uk:91
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