Geomagnetic Tracing of the Inner Heliosphere

Details Geomagnetic Tracing of the Inner Heliosphere Geomagnetic Tracing of the Inner Heliosphere

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ssrv...97..225p&link_type=abstract

Space Science Reviews, v. 97, Issue 1/4, p. 225-228 (2001).

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Scientific paper

Historical data of the geomagnetic activity records in St. Petersburg since 1841 do not show any ‘doubling’ of the total magnetic field at the Sun as claimed recently by Lockwood et al. (1999). However, recurrent patterns of the geomagnetic activity variations display ‘secular’ trend of the solar wind near ecliptic plane resulting from gradual change of the topological structure of the solar corona (Ponyavin, 1997). By comparing geomagnetic and eclipse observations we found ‘typical’ coronal shapes, which correspond better to periods of extremely low and high geomagnetic activity level rather than standard sunspot activity referencing as ‘Corona at Solar Maximum or Minimum’. Using geomagnetic records as proxies it has been suggested that the maximum of the sunspot activity was in July 2000.

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