Frequency Shifts of Rossby Waves in Beta-Plane Turbulence,
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1993
- Accession Number
- ADP008748
Entities
People
- Greg Holloway
- Yukio Kaneda
Organizations
- Nagoya University