Tracking a major interplanetary disturbance with SMEI

Details Tracking a major interplanetary disturbance with SMEI Tracking a major interplanetary disturbance with SMEI

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3102802t&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 2, CiteID L02802

Astronomy and Astrophysics

Astrophysics

27

Interplanetary Physics: Instruments And Techniques, Magnetospheric Physics: Storms And Substorms, Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections

Scientific paper

We present the first clear observations of an Earth-directed interplanetary disturbance tracked by the Solar Mass Ejection Imager (SMEI). We find that this event can be related to two halo CMEs seen at the Sun about 2 days earlier, and which merged in transit to 1 AU. The disturbance was seen about 16 hours before it reached Earth,and caused a severe geomagnetic storm at the time which would have been predicted had SMEI been operating as a real-time monitor. It is concluded that SMEI is capable of giving many hours advance warning of the possible arrival of interplanetary disturbances.

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