Organization:
Physics (PH)

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The mission of the Physics Department is to provide defense-relevant, advanced education and research programs to meet Naval unique needs, and increase the warfighting effectiveness of the U.S. Naval Forces, DoD and allied armed forces.
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Publication Search Results

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  • Publication
    A self-affine multi-fractal wave turbulence discrimination method using data from single point fast response sensors in a nocturnal atmospheric boundary layer
    (Monterey, California. Naval Postgraduate School, 1992-04) Kamada, Ray; Decaria, Alex Joseph; Physics (PH); Graduate School of Operational and Information Sciences (GSOIS); NA
    We present DA, a self-affine, multi-fractal which may become the first routine wave/turbulence discriminant for time series data. Using nocturnal atmospheric data, we show the advantages of D A over self-similar fractals and standard turbulence measures such as FFTs, Richardson number, Brunt-Vaisala frequency, buoyancy length scale, variances, turbulent kinetic energy, and phase averaging. DA also shows promise in resolving "wave-break" events. Since it uses local basis functions, DA may be an ideal tool to detect intermittent turbulence, coherent structures, and discrete wave trains in general. DA may also be a measure of chaos in general.