Multifrequency studies of equatorial ionospheric scintillations at Ootacamund

Details Multifrequency studies of equatorial ionospheric scintillations at Ootacamund Multifrequency studies of equatorial ionospheric scintillations at Ootacamund

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jatp...52...69r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 52, Jan. 1990, p. 69-76. Research supported by the Ministr

Computer Science

Sound

2

Equatorial Regions, Ionospheric Ion Density, Ionospheric Sounding, Radio Beacons, Radio Waves, Scintillation, Ats 6, Digital Data, Diurnal Variations, E Region, Equinoxes, Frequency Distribution, Ionograms, Synchronous Satellites

Scientific paper

The present data on 40, 140, and 360 MHz radion beacons' intensity scintillations aboard the GEO satellite ATS-6 indicate that the scintillation index S(4), which is the normalized rms value of the intensity fluctuations, is very large at the 2100-0200 h period associated with equatorial spread-F, as well as with a blanketing type of sporadic E-layer in the forenoon and afternoon hours. The frequency exponent n decreased monotonically with increasing scintillation intensity, approaching zero for saturated scintillations.

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