Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.1465m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Feb. 1, 1989, p. 1465-1471.
Astronomy and Astrophysics
Astronomy
40
Interplanetary Magnetic Fields, Solar Wind, Space Plasmas, Stellar Coronas, Astronomical Models, Geomagnetism, Magnetic Field Configurations, Magnetohydrodynamics
Scientific paper
ICE plasma and magnetic field data are examined to look for observational evidence of IMF draping ahead of fast coronal mass ejections (CMEs). The utility of the draping model for predicting the Bz perturbations and hence geomagnetic activity associated with the sheath regions ahead of such CMEs is also examined. A simple prediction scheme based on the upstream radial field component is developed and a set of interplanetary shock events previously associated with interplanetary type II bursts, and hence solar source locations, is used. Of 17 events the radial component predictor developed here correctly predicts the direction considered of the Bz perturbations for 13 events (76 percent). While this result is certainly not conclusive, it is considered to be supportive of the draping scenario.
Bame J. Jr. S.
Cane Hilary V.
Gosling Jack T.
McComas David John
Smith Edward. J.
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