Physics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7.1081o&link_type=abstract
Geophysical Research Letters, vol. 7, Dec. 1980, p. 1081-1084.
Physics
30
Atmospheric Electricity, Auroral Electrojets, Electric Fields, Phase Velocity, Radar Measurement, Antarctic Regions, Drift Rate, Inhomogeneity, Radar Range
Scientific paper
Long term averaged values of the electron irregularity drift velocity in the auroral electrojet obtained from VHF radar studies at Siple, Antarctica, show that the magnitude of the observed drifts is strongly range dependent. This feature is explainable in terms of the dispersion relation for the irregularity generation process, which shows that the observed irregularity phase velocity is strongly dependent on the angle between the radar beam and the earth's magnetic field. Although major features of the variations of observed drift velocity with range can be accounted for by taking this aspect angle dependency into account, best agreement between the theoretical and observed curves is obtained by assigning relatively large values to the electron collision frequency at 105 km.
Balsley Ben B.
Carter D. A.
Ecklund Warner L.
Johnston Paul E.
Ogawa Takuro
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