ABSTRACT
Brigitte Schmiederbrigitte.schmieder@obspm.fr
Observatoire de Paris
| Title : | Statistical analysis of solar events associated with SSC over one year of solar maximum during cycle 23: propagation and effects from the Sun to the Earth |
| Abstract | |
| The aim of this study is to investigate the link between Coronal Mass Ejections (CME) and the geomagnetic storms, related by the occurrence of a Sudden Storm Commencement (SSC), sudden growth of the magnetic field strength at the Earth’s surface, signature of the impinging of a shock on the magnetopause. We start from the 32 SSC of year 2002 listed by the observatory de l'Ebre /ISGI. We identify the nature of the perturbation at L1, relying on existing catalogues, and characterize it. To associate them to a solar source we perform a multi-criteria analysis (velocities, drag coefficient, radio waves, helicity). The impact of the solar event is studied on the whole chain from Sun to Earth (magnetosphere, ionosphere, thermosphere), as a function of the Dst index value, compared to the whole year 2002 geomagnetic storms. |
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