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Power harmonic radiation enhancement during the sudden commencement of a magnetic storm

Nature volume 275, pages 627–629 (1978)Cite this article

Abstract

THE enhancements of power harmonic radiation that occurred at the same time as a sudden commencement of a geomagnetic storm (ssc) and with geomagnetic pulsations that followed the ssc are described and discussed here. The power harmonic radiation was detected by an ELF–VLF wave receiver with two loop antennas and a vertical whip at Riverton, while geomagnetic variations were observed by three induction magnetometers distributed at Thompson (55.9° N, 97.4° W), Riverton (51.0° N, 97.0° W) and Star Lake (50.1° N, 95.2° W), Manitoba, Canada. The power harmonic enhancements are accounted for in terms of the geomagnetically induced telluric current that was possibly shunted through transformer neutrals and a transmission line of a power system, giving rise to a near saturation of the transformer core material. The important role which the enhanced power harmonics may have in stimulation of emissions in the magnetosphere is considered.

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Authors and Affiliations

  1. Department of Geophysics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada

    K. HAYASHI, T. OGUTI & T. WATANABE

  2. Geophysical Research Laboratory, University of Tokyo, Japan

    K. HAYASHI & T. OGUTI

  3. Institute of Space and Aeronaut Science, Geophysical Research Laboratory, University of Tokyo, Tokyo, Japan

    K. TSURUDA & S. KOKUBUN

  4. Department of Physics, University of Victoria, Victoria, British Columbia, Canada

    R. E. HORITA

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  1. K. HAYASHI
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HAYASHI, K., OGUTI, T., WATANABE, T. et al. Power harmonic radiation enhancement during the sudden commencement of a magnetic storm. Nature 275, 627–629 (1978). https://doi.org/10.1038/275627a0

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