Abstract
THE magnetic storm of March 22–23 was one of the most considerable recorded at Eskdalemuir during the last nine years throughout which continuous records have been obtained. It began with the abrupt disturbance known as a “sudden commencement” at gh. 12m. G.M.T. on March 22, the rapidity of the change in the horizontal components at that time being so great that the photographic impression of the moving light-spot was too faint to enable its details to be traced. The main features, however, began to develop immediately afterwards. On the traces recording the changes in declination and the westerly component there were no very large motions in the interval between the sudden commencement and 14½h., but there occurred the intense agitation due to oscillations of short period. At the same time the northerly component of force gradually rose, having superposed upon it several large, slow motions as wellas numerous short-period oscillations.
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MITCHELL, A. The Magnetic Storm of March 22–23 and Associated Phenomena. Nature 105, 170 (1920). https://doi.org/10.1038/105170a0
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DOI: https://doi.org/10.1038/105170a0
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