Corotation of ring current auroral spots at sub-auroral latitudes

Abstract
<p>We report observations of auroral spots s at sub-auroral latitudes. The auroral spots occurred during storm-recovery phases and corotated with the Earth at a speed either higher (super-rotation) or lower (sub-rotation) than the Earth\textquoterights rotation rate. In the dawn side, the spots have a slightly higher probability of super-rotation than that of the duskside auroral spots. The super- and sub-rotation is likely due to dynamics of the plasmasphere that is controlled by both drag (sub-rotation) and solar wind driven plasma convection.</p>
Year of Publication
2020
Journal
Journal of Atmospheric and Solar-Terrestrial Physics
Volume
198
Number of Pages
105195
Date Published
Jan-02-2020
ISSN Number
13646826
URL
https://www.sciencedirect.com/science/article/pii/S1364682620300158
DOI
10.1016/j.jastp.2020.105195