Evidence of gravity waves at E-region heights

Details Evidence of gravity waves at E-region heights Evidence of gravity waves at E-region heights

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..170g&link_type=abstract

Geophysical Research Letters, vol. 7, Feb. 1980, p. 170-172.

Physics

1

E Region, Gravity Waves, Ionospheric Disturbances, Ionospheric Electron Density, Atmospheric Composition, F Region, Power Spectra, Propagation Velocity, Wind Effects

Scientific paper

The paper examines the evidence of gravity waves at E-region heights. An analysis of electron density fluctuations of sporadic-E structures which last several hours without appreciable change in height and are associated with large scale TID's is presented for a latitudinal chain of five ionospheric stations in the Southern Hemisphere. The existence of traveling disturbances at the E-region affecting Es layers is observed; the disturbances have a propagational velocity of 250 and 600 m/sec toward the equator. The power spectra analysis of data shows few discrete frequencies and a broad band; comparison of discrete spectra components among stations demonstrate that the wave period grows linearly with the distance from the source.

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