Abstract
From a study of the geomagnetic effects produced at widely separated stations on three occasions of intense solar flares, McNish1 concluded that “the change in the magnetic field caused by the chromospheric eruption consisted of an augmentation of the diurnal-variation departure, obtaining at that time in each element”. This result, which has had important repercussions on the theory of the solar and lunar daily magnetic variations, was supported by Newton's2 paper concerning the geomagnetic flare effects occurring at Abinger (England) during 1936–46.
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References
McNish, A. G., Terr. Mag., 42, 109 (1937).
Newton, H. W., Mon. Not. Roy. Astro. Soc., Geophys. Supp., 5, 200 (1948).
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McINTOSH, D. Geomagnetic Effects of Solar Flares. Nature 167, 985 (1951). https://doi.org/10.1038/167985a0
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DOI: https://doi.org/10.1038/167985a0
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