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Geomagnetic line spectra-2 to 70 years

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Abstract

Application of a new data adaptive approach to power spectrum estimation has yielded greatly improved knowledge of the geomagnetic spectrum in the range 2 to 70 yr. The first successful line spectrum detection of the solar and double solar cycle variations in absolute geomagnetic element data are presented; also detected are the first four harmonics of the solar cycle and, excepting one, the first nine harmonics of the double solar cycle. Finally, evidence is found for a ∼ 60 yr line. The implications of these results for a variety of problems in planetary and space physics are discussed.

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Authors and Affiliations

  1. Magnetic Observatory of the CSIR, Hermanus, Cape Province, South Africa

    Robert G. Currie

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  1. Robert G. Currie
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Currie, R.G. Geomagnetic line spectra-2 to 70 years. Astrophys Space Sci 21, 425–438 (1973). https://doi.org/10.1007/BF00643106

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  • DOI: https://doi.org/10.1007/BF00643106

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