Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..109b&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
Solar Plasma, Coronal Mass Ejections, Solar-Terrestrial Relations
Scientific paper
Several signatures have been reported in our previous papers indicating that solar plasma events affect some tropospheric processes. This paper focuses on the result which demonstrated that tropospheric response exhibits a dependence on the solar origin of ejected plasma (coronal mass ejection (CMEs) or high-speed wind streams). The present study is devoted to reveal the relevant factors in the underlying mechanisms. The most intriguing question is as to what are the substantial differences between plasmas of different origin. Bulk speed and magnetic components of solar plasmas have been studied to reveal their role in some of our earlier published results. The present study is based on OMNI data and it is restricted to those years when the solar and terrestrial magnetic dipole fields are antiparallel. The events were separated into low, medium and high speed, and also the roles of By and Bz components as well as their fluctuations were considered. The paper lists the significant differences between CMEs and fast wind streams which can be responsible for the differences of their earlier detected atmospheric impacts.
Baranyi Tunde
Ludmány András
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