Open AccessA probable cause of the Yearly variation of magnetic storms and auroræ.
Author(s) -
Norman Lockyer,
William J. S. Lockyer
Publication year - 1905
Publication title -
proceedings of the royal society of london
Language(s) - English
Resource type - Journals
eISSN - 2053-9126
pISSN - 0370-1662
DOI - 10.1098/rspl.1904.0086
Subject(s) - solstice , variation (astronomy) , disturbance (geology) , geomagnetic storm , declination , shadow (psychology) , storm , climatology , magnetic declination , atmospheric sciences , environmental science , meteorology , earth's magnetic field , geology , geodesy , geography , magnetic field , physics , astronomy , quantum mechanics , psychology , paleontology , latitude , psychotherapist
The ordinary meteorological elements, such as atmospheric pressure, temperature, etc., have a yearly change satisfactorily explained as due to changes of the position of the earth’s axis in relation to the sun, or, in other words, the variation of the sun’s declination. There are, however, other phenomena, such as magnetic disturbances and auroræ, which have been explained differently. Thus, in regard to this seasonal variation Mr. Ellis has written, “The related physical circumstance is that at the equinoxes, when disturbance is more frequent, the whole surface of the earth comes under the influence of the sun, whilst at the solstices, when magnetic disturbance is less frequent, a portion of the surface remains for a considerable period in shadow.”