Physics
Scientific paper
Mar 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jgr...105.5357s&link_type=abstract
Journal of Geophysical Research, Volume 105, Issue A3, p. 5357-5372
Physics
4
Ionosphere: Auroral Ionosphere, Ionosphere: Current Systems, Ionosphere: Ionosphere/Magnetosphere Interactions, Ionosphere: Ionospheric Dynamics
Scientific paper
Over the past few decades, several events of the intense growth phase preceding the expansion onset of substorms were reported. We reexamine these events using an extensive set of data, including ground-based magnetograms at auroral latitudes, solar wind data from the Wind and IMP 8 satellites, and auroral UV images from the Polar and Viking satellites. Magnetograms show that the intense auroral electrojet is located in the early morning sector during these events. A common feature among the corresponding solar wind conditions for these events is the existence of a period of southward interplanetary magnetic field (IMF) preceded by a prolonged northward IMF. This intense growth phase, however, seems to be independent of the IMF By polarity. Enhanced auroras in the early morning sector appear during the growth phase. These auroras are consistent with relatively large geomagnetic disturbances during these events, indicating that enhanced conductances, combined with enhanced electric field caused by southward IMF, play an important role in the auroral electrojet during these intense growth-phase events.
Elphinstone R. D.
Kamide Yohsuke
Nishitani Nozomu
Shue Jih-Hong
No associations
LandOfFree
Intense growth phase events of substorms 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 Intense growth phase events of substorms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intense growth phase events of substorms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1292207