Journal of the Oceanographical Society of Japan

, Volume 40, Issue 5, pp 367–370 | Cite as

Some remarks on the spectrum of rapid-changing random data in the ocean

  • Hideo Nakajima


Spectral characteristics of rapid-changing random data in the ocean are discussed. Analysis shows that, if records are approximated by ‘saw-toothed’ random series ζ1 and ‘step’ series ζ2, ζ1 and ζ2 generally have spectral ranges of the −4th power and −2nd power, respectively, with respect to frequency (or wave number).


Spectral Range Spectral Characteristic Random Data Random Series 
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  1. Gregg, M. C. and C.S. Cox (1972): The vertical microstructure of temperature and salinity. Deep-Sea Res.,19, 355–376.Google Scholar
  2. Nagata, Y. (1978): Bispectra of spike-array type time series and their application to the analysis of oceanic microstructures. J. Oceanogr. Soc. Japan,34, 204–216.Google Scholar
  3. Nagata, Y. (1979): Autocovariance function and power spectrum of the vertical temperature gradient in the thermocline. J. Oceanogr. Soc. Japan,35, 26–35.Google Scholar
  4. Osborn, T. R. and C. S. Cox (1972): Oceanic fine structure. Geophys. Fluid Dyn,3, 321–345.Google Scholar
  5. Phillips, O.M. (1971): On the spectra measured in an undulating layered medium. J. Phys. Oceanogr.,1, 1–6.CrossRefGoogle Scholar
  6. Sommerfeld, A. (1949): Partial differential equations in physics. Academic Press, New York, 335 pp.Google Scholar

Copyright information

© Oceanographical Society of Japan 1984

Authors and Affiliations

  • Hideo Nakajima
    • 1
  1. 1.Faculty of EngineeringHiroshima UniversityHigashi-hiroshimaJapan

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