Computer Science – Sound
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jpaps..16....7t&link_type=abstract
Middle East Technical University Journal of Pure and Applied Sciences (ISSN 0022-4057), vol. 16, April 1983, p. 7-19. Sponsorshi
Computer Science
Sound
Ionospheric Electron Density, Midlatitude Atmosphere, Satellite Sounding, Ariel 4 Satellite, Northern Hemisphere, Oxygen Ions, Polar Regions, Southern Hemisphere, Winter
Scientific paper
The electron (0+) density variations over the northern and southern winter high latitude ionosphere are comprehensively analyzed using the technique of Brinton et al. (1978). Two-hour Magnetic Local Time (MLT) arithmetic means of electron densities are studied in terms of invariant magnetic latitude and in terms of magnetic activity as classified by the three-hour planetary magnetic activity index. It is found that the southern hemisphere densities are significantly lower than those in the northern hemisphere. Further, the maximum electron densities observed in the northern hemisphere are located in a MLT range symmetrical about the 14-02 MLT meridian, whereas in the southern hemisphere the maxima are observed about the noon midnight magnetic meridian. A deep localized ionization hole on the nightside of the polar cap is not observed although the polar cavity is apparent.
(Kabasakal) Tulunay Y.
Grebowsky Joseph M.
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