Two-day oscillation of the equatorial ionization anomaly
Article first published online: 20 SEP 2012
Copyright 1992 by the American Geophysical Union.
Journal of Geophysical Research: Space Physics (1978–2012)
Volume 97, Issue A5, pages 6343–6357, 1 May 1992
How to Cite
1992), Two-day oscillation of the equatorial ionization anomaly, J. Geophys. Res., 97(A5), 6343–6357, doi:10.1029/91JA02445.(
- Issue published online: 20 SEP 2012
- Article first published online: 20 SEP 2012
- Manuscript Accepted: 30 AUG 1991
- Manuscript Received: 16 JAN 1991
The day-to-day variability of the equatorial ionization anomaly (EIA), especially the 2-day oscillation of the EIA, has recently been studied in China. We suggest that the main driving source of the 2-day oscillation (or the day-to-day variation) of the EIA is a planetary wave with a 2-day period (or the superposition of planetary waves with different periods). The planetary wave modulates the tidal wind, and this results in the 2-day oscillation of the EIA via the dynamo effect and fountain effect. This suggestion, derived from the observational data, has been confirmed by numerical simulations.