Abstract
WITH reference to the aurora of July 27, accounts of which appear in NATURE, vol. xxxiv. pp. 311 and 312, the following particulars of the accompanying magnetic disturbance recorded here may be of interest. The disturbance commenced about 3 p.m. on July 27 with small fluctuations in declination and horizontal force, followed by larger movements which commenced sharply at 10.20 p.m. in all three elements, and continued to about 7 a.m. on July 28. The greatest movement was between 10.20 and 11.30 p.m., amounting to 45′ in declination,.011 of the horizontal force, and.005 of the vertical force. Corresponding earth-currents were recorded as usual.
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CHRISTIE, W. Aurora. Nature 34, 336 (1886). https://doi.org/10.1038/034336a0
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DOI: https://doi.org/10.1038/034336a0
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