Summary
A new method is presented of computer processing of amplitude-time records. The method is based on a two-component spectral analysis, suitable for investigating a planar stationary oscillatory event. The method is applied to the study of the fine structure of short-period geomagnetic pulsations. Apart from a semi-quantitative representation of the directional distribution of the pulsation event in the plane of oscillation, the proposed method enables one to obtain quantitative information on the frequency components, representing the pulsation — the distribution of the overall energy in the spectrum of the pulsation, the ellipticity of the polarization ellipses, the orientation of the major axes of the ellipses, and the sense of rotation of the disturbance vector.
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References
K. Dobeš, K. Prikner, J. Střeštík: Processings of Records of Rapid Variations of the Geomagnetic Field by Computer. Travaux Inst. Géophys. Acad. Tchécosl. Sci. No 330, Geofysikální sborník 1970, Academia, Praha 1972.
K. Prikner, J. Střeštík, K. Dobeš: Frequency Analysis of the Beating-Type Geomagnetic Pulsations in thePc3 Range. Studia geoph. et geod., 16 (1972), 262.
J. Střeštík, K. Prikner, K. Dobeš: Daily Variation of the Characteristics of Beating-TypePc3 (Bpc3) Pulsations. Studia geoph. et geod., 17 (1973), 27.
K. Dobeš, J. Střeštík, K. Prikner: Numerical Calculation of Frequency-Time Displays Using Amplitude-Time Records. Studia geoph. et geod., 15 (1971), 331.
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Dobeš, K., Prikner, K. & Střeštík, J. Frequency-direction analysis of geomagnetic pulsations. Stud Geophys Geod 17, 240–244 (1973). https://doi.org/10.1007/BF01626586
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DOI: https://doi.org/10.1007/BF01626586