It is well known that the variations of earth current corres pond to those of terrestrial magnetism, but there are few quantitative studies of them except the diurnal variations.
CITATION STYLE
HIRAYAMA, M. (1934). On the Relations between the Variations of Earth Potential Gradient and Terrestrial Magnetism. Journal of the Meteorological Society of Japan. Ser. II, 12(1), 16–22. https://doi.org/10.2151/jmsj1923.12.1_16
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