Secular Variations of a Shift of the Heliospheric Current Sheet

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Abstract

The shift of the heliospheric current sheet (HCS) can be judged by the correlation between polar- ities of the interplanetary magnetic field (IMF) observed near the Earth. Here the IMF polarities which were reconstructed from the geomagnetic data of the mid-latitude stations beginning from 1844 are studied. The correlation of positive and negative IMF sectors is the evidence of a shift of the heliospheric current sheet towards the Northern Hemisphere in cycles 15–19 of solar activity, and towards the south, in cycles 10–14. We suggest that there is a regular secular cycle of the south–north asymmetry of the current sheet. Corre- spondingly, a similar cycle is also characteristic of the solar magnetic field.
Original languageEnglish
Article number8
Pages (from-to)1037-1041
Number of pages5
JournalGeomagnetism and Aeronomy
Volume58
Issue number8
DOIs
StatePublished - 2018

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