Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1409w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 1, 1991, p. 1409-1419.
Physics
9
Annual Variations, Auroral Electrojets, Diurnal Variations, Magnetic Storms, Polar Caps, Antarctic Regions, Geomagnetic Tail, Magnetic Flux
Scientific paper
This paper investigates latitudinal differences in the motion of substorm auroral electrojets occurring in the nightside polar cap, using simultaneous ground magnetic-field measurements at nominally conjugate stations South Pole (Antarctica) and Iqaluit (Canada). The results obtained confirm the existence of seasonal and diurnal differences in the conjugate locations of westward auroral electrojets in the nightside polar cap. It was found, for instance, that, after about 2000 MLT, the poleward edge of expanding substorm electrojets penetrates to higher latitudes in the winter hemisphere than it does in the summer hemisphere. The observed effects were most pronounced for substorms that occurred during solstice periods.
Lanzerotti Louis J.
Maclennan Carol G.
Rosenberg T. J.
Wolfe Arthur
Wu Qingwen
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