Auroras in the region of the near-polar boundary of the cusp in the case the northward IMF

Details Auroras in the region of the near-polar boundary of the cusp in the case the northward IMF Auroras in the region of the near-polar boundary of the cusp in the case the northward IMF

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ge%26ae..32..141g&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 32, no. 4, p. 141-144.

Physics

1

Auroras, E Region, Geomagnetism, Interplanetary Magnetic Fields, Polar Cusps, Earth Ionosphere, Magnetic Field Reconnection, Magnetopause, Particle Precipitation

Scientific paper

All-sky camera data from the Antarctic station Vostok are used to analyze the characteristics of auroras associated with midday anomalous ionization in the E-layer appearing in the case of the northward IMF. Arc-type auroras, single or multiple, are shown to appear in the corrected geomagnetic-latitude interval of 80-83 deg a few minutes before or simultaneously with the anomalous ionization in the E-region. The observed midday anomalous ionization and the associated auroras appear to be a manifestation of the reconnection process of the northward interplanetary and geomagnetic fields at the high-latitude magnetopause, leading to the precipitation of particles into the ionosphere.

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