Normalized spectra of turbulent fluctuations over ocean waves
Download
Author
Stricker, Robert John
Date
1973-03Advisor
Davidson, Kenneth L.
Metadata
Show full item recordAbstract
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 spectra and cospectra with a larger degree of scatter in the low frequency range. Kolmogorov's -5/3 power law is found to describe the longitudinal and vertical velocity spectra in the high frequency range. However, it is not applicable to the lateral velocity spectra while results for the temperature spectra are inconclusive. Monin-Obukhov similarity theory well describes the vertical velocity spectra yet its application to horizontal velocity spectra is doubtful. Similarity theory does not seem to adequately describe the uw cospectra. Results from comparing similairt theory to temperature spectra and wT cospectra indicate the presence of an influence not accounted for by similarity theory. When compared, uw and wT cospectra are found to be significantly different. All computed spectra and cospectra are found to have a relatively larger amount of energy in the low frequency range than their respective over land spectra and cospectra.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
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 ... -
Comparison of measured and transformed directional wave spectra using a linear refraction model
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 ... -
Observed kinematics of waves in the surf zone
Constantian, Richard K. (Monterey, California. Naval Postgraduate School, 1999-03);The observed kinematics of waves in the surf zone is examined with extensive measurements from the DUCK94 experiment. Field data used in the study were obtained from vertical stacks of bi-directional current meters and a ...