Gravity wave signatures in the dip equatorial ionosphere-thermosphere system during the annular solar eclipse of 15 January 2010
Abstract
The present work pertains to the eclipse-induced gravity wave modulations in the ionosphere-thermosphere region over Trivandrum (8.5°N, 77°E, dip 2°N) during the annular solar eclipse of 15 January 2010. Electron density and neutral wind rocket payload measured horizontal winds and electron densities at E region altitudes, and ionosonde-derived foF1 and foF2 parameters are used to analyze the characteristics of the eclipse-induced gravity waves. The analysis reveals an intensification of gravity waves with periods around 30-100 min during the peak phase of the eclipse. The vertical wavelength of the prevalent wave is found to be around 2 km. The role of gravity wave-induced winds in generating blanketing Es over the equator is also examined.
- Publication:
-
Journal of Geophysical Research (Space Physics)
- Pub Date:
- June 2014
- DOI:
- 10.1002/2014JA019865
- Bibcode:
- 2014JGRA..119.4929M
- Keywords:
-
- Solar eclipse;
- Gravity waves;
- ionosphere-thermosphere region;
- blanketing Es