HR: 08:45h
AN: SH11A-04    [Abstracts]
TI: Earthbound and Geoeffective CMEs Observed by the Solar Mass Ejection Imager (SMEI)
AU: * Howard, T A
EM: tim@star.sr.bham.ac.uk
AF: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT United Kingdom
AU: Simnett, G M
EM: gms@star.sr.bham.ac.uk
AF: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT United Kingdom
AU: Robinson, I M
EM: imr@star.sr.bham.ac.uk
AF: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT United Kingdom
AU: Tappin, J
EM: sjt@star.sr.bham.ac.uk
AF: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT United Kingdom
AB: During its $\sim$2 year lifespan, well over 100 CMEs have been detected and tracked by the Solar Mass Ejection Imager (SMEI) on the Coriolis spacecraft. Of these, a small number have been identified as halo (Earthbound) CMEs, while other events have coincided with halo CMEs observed in coronagraphs and shocks observed by solar-wind based spacecraft. Some have also resulted in geomagnetic storms upon arrival at the Earth. We present a survey of probable Earthbound CMEs, using over 18 months of SMEI data correlated with coronagraphs, magnetometers and particle detectors. These instruments include the LASCO and EIT instruments aboard SOHO, SWEPAM and MAG aboard ACE and ground-based magnetometers providing Kp and Dst indices. Acceleration rates, common features, and the use of SMEI as a potential space weather forecasting tool are discussed.
UR: http://www.sr.bham.ac.uk
DE: 7513 Coronal mass ejections
DE: 7514 Energetic particles (2114)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting