Spectra of turbulent fluctuations over ocean waves
Bingham, Glann Stevenson
Davidson, Kenneth L.
Naval Postgraduate School
MetadataShow full item record
Spectral analyses are performed on turbulence data obtained over natural ocean waves during BOMEX. Results are obtained for variance and co-variance spectra, phase and coherence relationships, and amplitude ratios. Peaks in the horizontal and vertical velocity spectra are observed to correspond to the frequency of the wave spectra peaks. Phase relationships tend to obey predictions of potential flow theory in regions of the wave spectra peaks. However, the wave related motion contributes to the momentum transfer which is not predicted by potential flow theory. The ratio of the wave induced disturbance to the sea surface displacement is used to locate the wave spectra frequency for which the level of measurement is a critical level. Results of the study are readily compared to existing wind-wave coupling theories, both linear and non-linear.
Showing items related by title, author, creator and subject.
Stricker, Robert John (Monterey, California: U.S. Naval Postgraduate School, 1973-03);Spectral and cospectral analyses are performed on turbulence data obtained over natural ocean waves during BOMEX. Results are obtained for normalized spectra and cospectra. Significant scatter is observed throughout the ...
Techniques and benefits of shaping the pulses of binary sequences with application to spread spectrum radio communications. Mavranganis, Panayiotis G. (Monterey, California. Naval Postgraduate School, 1979-03);This research is concerned with binary sequences. Such two-level voltage waveforms are used in some types of spread spectrum systems. Of interest in this work is the effect of shaping the normally rectangular pulses of ...
Liu, James Cheng (Monterey, California: Naval Postgraduate School, 1990-12);Deep water directional wave spectra, measured by an NDBC 3-meter buoy off Montery bay, are transformed to shallow water using a linear refraction model. The transformed directional spectra are compared with measured spectra ...