Latitudinal variations of auroral-arc velocity
Abstract
An analysis is made of the latitudinal distribution of the meridional-drift velocity of auroral arcs in the midnight sector of the auroral zone. It is shown that this velocity increases from 100 m/s at the southern boundary of the auroral oval to 400 m/s at its near-polar boundary. The motions of arcs observed in the ionosphere are projected along the geomagnetic field lines into the plasma sheet, which is used to study the distribution of the Y-component of the electric field in the magnetotail.
- Publication:
-
Geomagnetism and Aeronomy
- Pub Date:
- December 1988
- Bibcode:
- 1988Ge&Ae..28.1031Z
- Keywords:
-
- Auroral Arcs;
- Drift Rate;
- Latitude;
- Polar Regions;
- Electric Fields;
- Geomagnetic Tail;
- Lines Of Force;
- Plasma Layers;
- Space Plasmas