On the distribution of global auroras during intervals of magnetospheric quiet

Details On the distribution of global auroras during intervals of magnetospheric quiet On the distribution of global auroras during intervals of magnetospheric quiet

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.4701b&link_type=abstract

Journal of Geophysical Research, vol. 81, Sept. 1, 1976, p. 4701-4714. Research sponsored by the Norges Almenvitenskapelige For

Mathematics

Logic

4

Auroras, Geomagnetism, Magnetic Effects, Magnetic Storms, Meteorological Satellites, Satellite Observation, Auroral Electrojets, Data Reduction, Energy Dissipation, Magnetic Measurement, Polar Caps, Spectroradiometers

Scientific paper

The instantaneous distribution of auroras during intervals of very quiet magnetic activity was derived from Defense Meteorological Satellite Program data. Results show that the size of the instantaneous auroral oval is highly sensitive to relatively small changes in the magnitude of the auroral electrojet. Certain morphological features associated with expanded auroral substorms in the morning sector - omega bands, torchlike structure and patchy auroras - were not observed, while sun-aligned arcs were observed on numerous orbits and were most frequent when magnetic disturbances were minimal.

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