Wavelet cross spectra and cross scalograms are used to analyze the time-scale structure of bivariate turbulence data from the boundary layer over the ocean. The cross scalogram for the streamwise and vertical turbulent velocity components shows a highly intermittent pattern with significant contributions of opposite signs appearing at two specific scales, {~}60 m and {~}2 km, believed to be related to small-scale turbulent mixing and large-scale secondary flow in the boundary layer.
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Hudgins et al. (1993) studied this question.
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