Altitude variations of ionospheric currents at auroral latitudes

Details Altitude variations of ionospheric currents at auroral latitudes Altitude variations of ionospheric currents at auroral latitudes

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..309k&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 4, p. 309-312.

Physics

5

Atmospheric Physics, Auroral Electrojets, Current Density, Ionospheric Currents, Vertical Distribution, E Region, Eiscat Radar System (Europe), Radar Measurement

Scientific paper

On the basis of updated EISCAT experiments, the first full derivation of the ionospheric current density of the auroral electrojets at six different altitudes are presented. It is found that current vectors at different altitudes are quite different, although the eastward and westward currents prevail in the evening and morning sectors, respectively, once the currents are integrated over altitude. The eastward electrojet becomes almost northward whilst the westward electrojet becomes almost southward, at the highest altitude, 125 km, in this study. The physical implications of these characteristics are discussed.

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