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	Provedor de dados ArchiMer (1) Autor Branger, H (1) Chapron, Bertrand (1) Elfouhaily, Tanos (1) Guignard, S (1) Thompson, D (1) Vandemark, D (1) Mais... Palavra-chave AM FM (1) Amplitude modulation frequency modulation (1) Horizontal asymmetry (1) Instantaneous amplitude (1) Instantaneous frequency (1) Mode coupling (1) Nonlinear hydrodynamic processes (1) Time frequency distributions (1) Vertical asymmetry (1) Wave wave interaction (1) Wind waves (1) Mais... Tipo do documento Text (1) Ano 2003 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última A time-frequency application with the Stokes-Woodward technique ArchiMer Elfouhaily, Tanos; Guignard, S; Branger, H; Thompson, D; Chapron, Bertrand; Vandemark, D. In a recent paper, we have generalized Woodward's theorem and applied it to the case of random signals jointly modulated in amplitude and frequency. This generalization yields a new spectral technique to estimate the amount of energy due to mode coupling without calling for higher order statistics. Two power spectra are detected; the first is related to the independent modes, and the second contains extra energy caused by mode coupling. This detection is now extended from frequency to time-frequency domain. A comparison between a wavelet transform and our time-frequency technique shows good agreement along with new insight into the time occurrence of the nonlinearities or mode coupling. An application to water surface waves is given in this letter as an... Tipo: Text Palavras-chave: Wind waves; Wave wave interaction; Vertical asymmetry; Time frequency distributions; Nonlinear hydrodynamic processes; Mode coupling; Instantaneous frequency; Instantaneous amplitude; Horizontal asymmetry; AM FM; Amplitude modulation frequency modulation. Ano: 2003 URL: https://archimer.ifremer.fr/doc/2003/publication-744.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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