Accession Number : ADP008748
Title : Frequency Shifts of Rossby Waves in Beta-Plane Turbulence,
Corporate Author : NAGOYA UNIV (JAPAN)
Personal Author(s) : Kaneda, Yukio ; Holloway, Greg
Report Date : NOV 1993
Pagination or Media Count : 19
Abstract : Frequency shifts in Rossby wave propagation due to nonlinear interactions in geostrophic (beta-plane) turbulence are studied by direct numerical simulations and a statistical closure theory. The shifts are of systematic sign and can be quite large as compared with the linear Rossby frequency. Under certain conditions, the closure equations yield a simple approximation for the shifts. An explanation of the shifts is given by a model that includes oscillating random sweeping and strain of large eddies.
Descriptors : *OCEAN MODELS, *TURBULENCE, *FREQUENCY SHIFT, PARTIAL DIFFERENTIAL EQUATIONS, NONLINEAR ANALYSIS, MATHEMATICAL MODELS, CORIOLIS EFFECT, JAPAN.
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE