An auroral torch structure as an activity center of pulsating auroras

Details An auroral torch structure as an activity center of pulsating auroras An auroral torch structure as an activity center of pulsating auroras

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981cajph..59.1056o&link_type=abstract

Canadian Journal of Physics, vol. 59, Aug. 1981, p. 1056-1062. Research supported by the Japan Society for the Promotion of Scie

Physics

7

Auroral Arcs, Earth Magnetosphere, Electron Precipitation, Geomagnetic Pulsations, Propagation Modes, Canada, Cold Plasmas, Energetic Particles, Photometry, Plasma Torches, Pulsed Radiation, Wave Propagation

Scientific paper

In order to examine the auroral torch structures in relation to the pulsating aurora in greater detail, two torch structures observed over Park Site near Saskatoon on the morning of February 16, 1980, are analyzed. For comparison, the analysis also includes a quieter form of pulsating auroras, observed on February 15 and 18. The features of the pulsations in the torch structures are described, and it is shown how they are similar to features of pulsations for quieter periods. The torch structure of the aurora is found to be an activity center of the pulsating auroras. The formation of the torch structures is thought to be related to the local enhancement of discrete auroral activity.

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