Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm51a0352p&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM51A-0352
Physics
2704 Auroral Phenomena (2407), 2708 Current Systems (2409), 2716 Energetic Particles, Precipitating
Scientific paper
This study shows all-sky camera (ASC) and IRIS imaging riometer observations on evening sector auroral arcs. We examine the relative locations and intensities of riometer absorption, eastward electrojet (as deduced from the magnetic recordings) and inverted electron energy flux estimated from the all-sky images (with an ASC inversion method). One of the arcs took place during the Finnish optical and EISCAT campaign on 22 Feb 2004 allowing the usage of the radar data. IRIS, ASC and EISCAT data have different spatial resolutions and are affected by precipitation with different initial energies, but show an obvious correlation. Especially absorption and energy flux behave similarly in location and intensity, and they seem to appear in the shear region between the eastward and westward electrojets. The electrojet strength, however, shows mainly anticorrelation with respect to the precipitation intensity.
Honary Farideh
Jussila J.
Kauristie Kirsti
Partamies N.
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