Drifting black aurorae?

Details Drifting black aurorae? Drifting black aurorae?

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95..241s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Jan. 1, 1990, p. 241-246. Research supported by the Council for Scien

Physics

8

Auroral Electrojets, Auroras, Ionospheric Drift, Luminosity, Television Cameras, E Region, Kelvin-Helmholtz Instability

Scientific paper

Characteristics of eastward drifting forms, previously described in the literature as black aurorae, have been identified in low-light level TV camera data. The TV field of view was within the field of view of the Scandinavian Twin Auroral Radar Experiment and that of an all-sky camera. On the basis of these observations it is proposed that these auroral forms are a manifestation of folds or waves on the borders of auroral bands propagating along the dark regions between neighboring auroral bands. Conditions under which the folds or waves occur are compatible with their formation by the Kelvin-Helmholtz electrostatic instability.

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