Wavelet ridge diagnosis of time-varying elliptical signals with application to an oceanic eddy

A method for diagnosing the physical properties of a time-varying ellipse is presented. This essentially involves extending the notion of instantaneous frequency to the bivariate case. New complications, and possibilities, arise from the fact that there are several meaningful forms in which a time...

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Bibliographic Details
Main Authors: J. M. Lilly, J.-C. Gascard
Format: Article
Language:English
Published: Copernicus Publications 2006-01-01
Series:Nonlinear Processes in Geophysics
Online Access:http://www.nonlin-processes-geophys.net/13/467/2006/npg-13-467-2006.pdf