Computer Science – Sound
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..985d&link_type=abstract
(IUGG, IAGA, USAF, et al., International Symposium on Equatorial Aeronomy, 7th, Hong Kong, Mar. 22-29, 1984) Journal of Atmosphe
Computer Science
Sound
Beacon Satellites, Ionospheric Sounding, Magnetic Storms, Solar Terrestrial Interactions, Spread F, Ats 6, Diurnal Variations, Ionosondes, Ionospheric Electron Density, Irregularities, Particle Precipitation, Scintillation, Solar Cycles
Scientific paper
Ground-based ionosonde data as well as phase and amplitude records from geostationary satellites ATS 6 and ETS II were taken at Gauhati (26 deg 10 min N, 91 deg 45 min E, geom lat 15 deg N, dip 37). The ionospheric data were analyzed for spread-F and its association with scintillation in radio beacon data has been examined through a period which covers a complete solar cycle. It is seen that this station does not show many characteristic features of low latitude stations. Post-midnight frequency spread is predominant. During geomagnetic storm dawn-time range spread is seen. The spread-F bears a positive correlation with Kp. Frequency spread is associated with amplitude scintillations, suggesting thereby that irregularity structures are thick. During disturbed conditions, range spread associated with scintillations and rapid build-up of morning-time integrated electron content have been observed. Here, an attempt has been made to offer an explanation in terms of precipitation of charged particles.
Barbara Ananda Kumar
Devi Minakshi
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