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https://doi.org/10.1029/2009JA014663

has been cited by the following article:

• TITLE: The Geomagnetic Effects of Solar Activity as Measured at Ouagadougou Station

  AUTHORS: Aristide Marie Frédéric Gyébré, Doua Allain Gnabahou, Frédéric Ouattara

  KEYWORDS: CMEs Activity, Shock Activity, F2 Layer Critical Frequency, Geomagnetic Activity, Ionosphere Time Variation

  JOURNAL NAME: International Journal of Astronomy and Astrophysics, Vol.8 No.2, June 14, 2018

  ABSTRACT: The coronal mass ejections (CMEs) produce by Sun poloidal magnetic fields contribute to geomagnetic storms. The geomagnetic storm effects produced by one-day-shock, two-days-shock and three-days-shock activities on Ouagadougou station F2 layer critical frequency time variation are analyzed. It is found that during the solar minimum and the increasing phases, the shock activity produces both positive and negative storms. The positive storm is observed during daytime. At the solar maximum and the decreasing phases only the positive storm is produced. At the solar minimum there is no three-days-shock activity. During the solar increasing phase the highest amplitude of the storm effect is due to the one-day-shock activity and the lowest is produced by the two-days-shock activity. At the solar maximum phase the ionosphere electric current system is not affected by the shock activity. Nevertheless, the highest amplitude of the storm effect is caused by the two-days-shock activity and the lowest by the one-day-shock activity. During the solar decreasing phase, the highest amplitude provoked by the storm is due to the three-days-shock activity and the lowest by the one-day-shock activity.