Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.1569e&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Feb. 1, 1985, p. 1569-1576.
Physics
52
Auroras, Earth Magnetosphere, Interplanetary Medium, Polar Substorms, Daytime, Earth Ionosphere, Polar Caps, Space Plasmas
Scientific paper
The position of dayside aurora (as measured from South Pole station in 1980) is compared with the interplanetary magnetic field Bz component and to the AE index. The results are consistent with an earlier work showing a close relationship with AE and little correlation with Bz. Two recent papers have presented data that were interpreted to indicate a dominant Bz correlation. A reconsideration of the data sets used in those papers does not support dominant Bz dependence, and in fact reaffirms a close dependence on AE. It is concluded that the position of the dayside cusp is largely controlled by substorm processes internal to the magnetosphere rather than by direct merging and erosion processes with the interplanetary field.
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