Geoeffectiveness of the heliospheric current sheet

Details Geoeffectiveness of the heliospheric current sheet Geoeffectiveness of the heliospheric current sheet

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.7877m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. A5, p. 7877-7880

Physics

7

Current Sheets, Geomagnetism, Heliosphere, Solar Activity Effects, Solar Terrestrial Interactions, Sudden Storm Commencements, Sun, Shock, Solar Activity, Solar Corona, Solar Cycles, Stellar Mass Ejection

Scientific paper

In the present paper we study the distribution of sudden storm commencement (SSCs) and their associated geomagnetic activity with respect to the Earth's crossing of the heliospheric current sheet. We found that most SSC events occur when the Earth is close to the current sheet. Also, we found that the geoeffectiveness of SSC's seems to be independent of their position with respect to the current sheet. Our results seem to suggest that coronal mass ejections, assumed as the sources of most SSC's, should follow the behavior of SSC's along the solar cycle, i.e., the shock-producing ones should present a bimodal distribution.

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