volume 13, issue S335, P208-210 2017
DOI: 10.1017/s1743921317008468
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Mikhail V. Vokhmyanin, Nadezhda V. Zolotova, Dmitry I. Ponyavin

Abstract: AbstractThe interplanetary magnetic field (IMF) controls magnetospheric currents which cause variations of the ground-based magnetic field. Regular magnetic observations made in the 19th century allow us to infer daily IMF polarities back to 1844. The results coincide with satellite data in about 79% days. Moreover, for the most part of the 19th and 20th centuries, proxies obtained from various geomagnetic data (Helsinki, Saint-Petersburg, Potsdam, and Ekaterinburg) show the same patterns. This suggests that t…

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