On auroral electrojet curvature and the interpretation of azimuth-scan, radar Doppler data
Article first published online: 7 DEC 2012
Copyright 1977 by the American Geophysical Union.
Volume 12, Issue 1, pages 141–149, January-February 1977
How to Cite
1977), On auroral electrojet curvature and the interpretation of azimuth-scan, radar Doppler data, Radio Sci., 12(1), 141–149, doi:10.1029/RS012i001p00141., , and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Received: 14 JUN 1976
In this paper we show that the geometrical configuration of the auroral electrojet is of great importance in the interpretation of Doppler velocity data obtained by auroral backscatter radars operated close to the auroral oval at low elevation angles. We show that some of the characteristic features in the azimuthal dependence of the radar Doppler velocity can be explained by accounting for the auroral electrojet curvature produced by (1) the shape of the auroral oval, (2) the altitude variation of the Hall and Pedersen currents, and (3) other local variations in current flow. An important application of the geometrical considerations described in this paper is the estimation of the ionospheric electric field from Doppler-velocity variations observed in the diffuse radar aurora.