Title :
Application of higher order scale measurements [water surface waves]
Author_Institution :
Centre de Brest, IFREME, Plouzane, France
Abstract :
The use of the time scale transform to characterize water surface wave elevation records is presented. Wavelet-based techniques provide a way to obtain the local scale energy distribution. This variance analysis can be extended to measure local asymmetries, amplitude, and temporal skewness, by means of wavelet coefficients cubic averages. To further analyze intermittent coupling between components along the data record, a local biscale function is defined to represent the fraction of power at the sum of two scales in terms of the local quadratic interaction between two wavelet coefficients
Keywords :
gravity waves; ocean waves; time series; transforms; wavelet transforms; amplitude; intermittent coupling; local asymmetries; local biscale function; local quadratic interaction; local scale energy distribution; ocean waves; power fraction; temporal skewness; time scale transform; variance analysis; water surface wave elevation records; wavelet coefficients cubic averages; Analysis of variance; Continuous wavelet transforms; Information analysis; Signal analysis; Surface waves; Time frequency analysis; Time series analysis; Wavelet analysis; Wavelet coefficients; Wavelet transforms;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1992., Proceedings of the IEEE-SP International Symposium
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0805-0
DOI :
10.1109/TFTSA.1992.274201
