Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1777943 | Journal of Atmospheric and Solar-Terrestrial Physics | 2008 | 15 Pages |
Abstract
The response of the equatorial electrojet (EEJ) to solar eclipses is studied in this work. We analyzed the magnetic field measurements obtained by three satellites, CHAMP, SAC-C and Ørsted and correlated them with ground-based observations during the eclipses. The observations show a local weakening of the EEJ after the shadow passed the dip equator. The size of the effect is, however, comparable with the day-to-day variability. In four out of five events we found the formation of a counter electrojet in the wake of the eclipse. We propose that the depression of the EEJ during an eclipse favors the formation of a counter electrojet.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geophysics
Authors
A.T. Tomás, H. Lühr, M. Rother, C. Manoj, N. Olsen, S. Watari,