Application of the Wigner-Ville Distribution to Temperature-Gradient Microstructure - a New Technique to Study Small-Scale Variations

Imberger, Jorg and Boashash, Boualem (1986) Application of the Wigner-Ville Distribution to Temperature-Gradient Microstructure - a New Technique to Study Small-Scale Variations. Journal of Physical Oceanography, 16 12: 1997-2012. doi:10.1175/1520-0485(1986)016<1997:AOTWDT>2.0.CO;2

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Author Imberger, Jorg
Boashash, Boualem
Title Application of the Wigner-Ville Distribution to Temperature-Gradient Microstructure - a New Technique to Study Small-Scale Variations
Journal name Journal of Physical Oceanography   Check publisher's open access policy
ISSN 0022-3670
Publication date 1986-12
Sub-type Article (original research)
DOI 10.1175/1520-0485(1986)016<1997:AOTWDT>2.0.CO;2
Open Access Status File (Publisher version)
Volume 16
Issue 12
Start page 1997
End page 2012
Total pages 16
Place of publication Boston, MA, United States
Publisher American Meteorological Society
Language eng
Abstract The Wigner–Ville distribution, a new tool in the time–frequency analysis of signals, is applied to temperature gradient microstructure records. In particular, the Wigner–Ville distribution is used to compute the local instantaneous and maximum frequencies of the signal as a function of depth, and these frequencies are then related to the dissipation of turbulent kinetic energy. The method is applied to two temperature gradient microstructure records from the Wellington Reservoir. It is shown that a high resolution estimate of the dissipation is obtained that provides insight into the patchiness, the wavenumber content, and the Reynolds–Froude number variability of the integral scales of motion in a strongly stratified water column.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
 
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