Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jastp..69.2416k&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 69, Issue 17-18, p. 2416-2427.
Physics
20
Scientific paper
We present experimental evidence and modeling results which indicate that eastward thermospheric wind is the primary controlling factor of equatorial spread-F initiation in the post-sunset ionosphere. Eastward wind-driven Pedersen currents are able to polarize F-region density perturbations with westward tilting wavefronts into rapidly growing modes to trigger the formation of spread-F bubbles. The described process is so rapid that seeding requirements of spread-F initiation by external factors such as gravity waves are effectively eliminated.
Akgiray Ahmed
Chau Jorge L.
Hysell David L.
Kudeki Erhan
Milla Marco
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