Mathematics – Logic
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.4437n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, April 1, 1986, p. 4437-4450. Research supported by the National Insti
Mathematics
Logic
18
Auroras, Interplanetary Magnetic Fields, Space Plasmas, Temporal Distribution, Correlation Coefficients, Electric Fields, Magnetic Variations, Plasma Layers, Solar Wind
Scientific paper
The auroral boundary index calculated by Gussenhoven et al. (1983) on the basis of Defense Meteorological Satellite Program precipitating electron data is used to examine the dynamics of the auroral oval in the midnight sector. The equatorward boundary of the oval expands equatorward and contracts poleward corresponding to southward and northward turnings, respectively, of the interplanetary magnetic field (IMF). The time scales are found to be, on the average, 45 min for the expansion and 8 hours for the contraction. A general empirical formula to predict the oval location for any IMF variation is devised. Physical processes in the magnetosphere consistent with the 'rapid' expansion and 'slow' contraction of the auroral oval are discussed.
Gussenhoven Susan M.
Hardy David A.
Kamide Yohsuke
Nakai Hidekazu
No associations
LandOfFree
Time scales of expansion and contraction of the auroral oval 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 Time scales of expansion and contraction of the auroral oval, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time scales of expansion and contraction of the auroral oval will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1103040