Application of the Wigner-Ville distribution to temperature gradient microstructure: a new technique to study small-scale variations

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Application of the Wigner-Ville distribution to temperature gradient microstructure: a new technique to study small-scale variations

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dc.contributor.author Imberger, Jorg
dc.contributor.author Boashash, Boualem
dc.date.accessioned 2011-05-19T16:30:39Z
dc.date.available 2011-05-19T16:30:39Z
dc.date.issued 1986-12
dc.identifier.citation Journal of Physical Oceanography, Vol. 16, No. 12, pp. 1997-2012 en_US
dc.identifier.issn 0022-3670
dc.identifier.uri http://hdl.handle.net/10576/10684
dc.description This is one of the first applications of time-frequency analysis using the WVD hat involves real data and a physical interpretation of the improvements made. A software package that calculates IF estimates and TFDs can be downloaded from the web site: www.time-frequency.net en_US
dc.description.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. en_US
dc.language.iso en en_US
dc.publisher American Meteorological Society, Boston, MA en_US
dc.subject Wigner-Ville Distribution en_US
dc.subject instantaneous frequency en_US
dc.subject time-frequency analysis en_US
dc.subject instantaneous spectrum en_US
dc.subject cross-terms en_US
dc.subject density microstructure measurement en_US
dc.subject IF estimation en_US
dc.subject energy dissipation rate en_US
dc.subject turbulence spectral analysis en_US
dc.subject displacement scale technique en_US
dc.subject buoyancy frequency en_US
dc.subject WVD properties en_US
dc.title Application of the Wigner-Ville distribution to temperature gradient microstructure: a new technique to study small-scale variations en_US
dc.type Article en_US

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