Physics – Plasma Physics
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...106.3845i&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue A3, p. 3845-3858
Physics
Plasma Physics
50
Ionosphere: Auroral Ionosphere, Magnetospheric Physics: Magnetotail, Magnetospheric Physics: Storms And Substorms, Space Plasma Physics: Magnetic Reconnection
Scientific paper
Geotail plasma and magnetic field observations of 24 plasmoids between 21 and 29 RE have been compared with Polar ultraviolet observations of auroral brightenings. Both single and multiple plasmoids almost always corresponded to brightenings, but the brightenings were sometimes weak and spatially limited and did not always grow to a global substorm. Even a case where a plasmoid event occurred with fast postplasmoid flow corresponded to a weak brightening but no substorm. Some brightenings did not correspond to plasmoids, but these brightenings were observed away from the longitude of Geotail, indicating that plasmoids have a small longitudinal extent in the near tail. The plasmoids were occasionally observed before the brightenings but more frequently were observed 0-2 min after the brightenings, with the delays probably due to the transit time to the observation point. It seems likely that formation of a near-Earth neutral line causes each brightening in the polar ionosphere, but these formations do not always lead to a full-fledged substorm. What additional circumstance causes development of a full, large-scale substorm remains an open question.
Brittnacher Mitchell Jay
Fairfield Donald H.
Ieda A.
Kokubun Susumu
Liou Kan
No associations
LandOfFree
Plasmoid ejection and auroral brightenings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Plasmoid ejection and auroral brightenings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasmoid ejection and auroral brightenings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1008674