TitleCorotation of ring current auroral spots at sub-auroral latitudes
Publication TypeJournal Article
Year of Publication2020
AuthorsZhang, Y, Paxton, LJ
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Volume198
Pagination105195
Date PublishedJan-02-2020
ISSN13646826
KeywordsAuroral spots; Corotation; Sub-auroral latitude
Abstract

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's 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.

URLhttps://www.sciencedirect.com/science/article/pii/S1364682620300158
DOI10.1016/j.jastp.2020.105195
Short TitleJournal of Atmospheric and Solar-Terrestrial Physics


Page Last Modified: April 2, 2020