Computer Science
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..879p&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 6, June 1992, p. 879-887.
Computer Science
10
Auroras, Magnetic Field Reconnection, Magnetopause, Polar Cusps, Daytime, Flux Transfer Events, Geomagnetism, Magnetic Storms
Scientific paper
The development of dayside auroral breakups is studied, and results are compared with the magnetic field reconnection model. It is shown that periods of poleward motion of auroral arcs are preceded by relatively short intervals of equatorward auroral expansion. These equatorward motions are analogous in some aspects to poleward jumps of aurorae at the night side of the oval during auroral substorms, and they are thought to be the direct signatures of magnetic field reconnection pulses at the magnetopause. FTEs associated with dayside breakups are shown to be rather large-scale phenomena, the lengths of the reconnection line at the magnetopause equals 4-6 RE, and the meridional extent of the reconnected tube along the magnetopause is also about 4 RE. The rate of energy input into the reconnection region is estimated.
Egeland A. A.
Pudovkin Mikhail I.
Sandholt Per Even
Zaitseva Svetlana A.
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