Characteristic velocity of equatorial F region irregularities determined from space receiver scintillation data

Details Characteristic velocity of equatorial F region irregularities determined from space receiver scintillation data Characteristic velocity of equatorial F region irregularities determined from space receiver scintillation data

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9411959b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Sept. 1, 1989, p. 11959-11969.

Computer Science

Sound

10

Equatorial Atmosphere, F Region, Ionospheric Drift, Satellite Sounding, Electromagnetic Fields, Scintillation, Zonal Flow (Meteorology)

Scientific paper

A correlation analysis of space receiver scintillation data for a 250-MHz signal transmitted from a geosynchronous satellite to an equatorial station is used to determine the average drift of equatorial F-region irregularities transverse to the signal path. Also, the characteristic velocity, a measure of temporal variability of the irregularities, is calculated. A steep decline in the characteristic velocity is observed, following the onset of scintillation during the premidnight period. The characteristic velocity gradually increases in the postmidnight period, with a minimum around 0100 LT. Also, it is found that the pattern of the characteristic velocity on a magnetically disturbed night is sometimes substantially different from that of a quiet period.

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