Computer Science – Sound
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2525t&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2525-2532.
Computer Science
Sound
9
Annual Variations, Diurnal Variations, Equatorial Atmosphere, Ionospheric Electron Density, Ionospheric Sounding, Satellite Sounding, Brazil, F Region, Faraday Effect, Night Sky, Synchronous Meteorological Satellite
Scientific paper
The Faraday rotation and amplitude data for the period September 1978 through August 1979, recorded from the geostationary satellite SMS 1 (90 deg W) at Natal (5.9 deg S, 35.2 deg W), have been utilized to study the behavior of total electron content (TEC). Apart from diurnal and seasonal behavior of TEC, two characteristic features of the nighttime ionosphere are discussed: (1) a postsunset enhancement in TEC which lasts for several hours following the rapid sunset decrease and (2) the sharp, isolated changes in TEC. In particular, relating to phenomenon 2, the depletions in TEC are usually accompanied by a simultaneous increase in fading rate, scintillation index, and amplitude level, while the enhancements are accompanied by a simultaneous decrease in fading rate, scintillation index, and amplitude level.
Ram Tyagi Tuhi
Soicher H.
Tauriainen A.
Yeh K. C.
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