Combined EISCAT and All-Sky camera observations of auroral structures

Details Combined EISCAT and All-Sky camera observations of auroral structures Combined EISCAT and All-Sky camera observations of auroral structures

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1185g&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, July 1991, p. 1185-1188.

Physics

3

All Sky Photography, Atmospheric Models, Auroras, Eiscat Radar System (Europe), Radar Measurement, Electric Fields, Geomagnetism, Plasma Dynamics

Scientific paper

Discrete arc structures were identified from EISCAT data on March 11, 1984 which were simultaneously recorded on All-Sky camera pictures from the Kilpisjarvi station in Finland. From the electric field measurements supplied by the tri-static UHF facility, some privileged orientations has been found through the requirement of a uniform tangential electric field across the arc structure, which corresponds to the preferential arc alignment as deduced from camera pictures. Additional fold structures, resolved by the All-Sky camera, develop along the preexisting arcs which still organize the electric field fluctuations in their vicinity.

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