TEC variations during low solar activity period (2005–2007) near the Equatorial Ionospheric Anomaly Crest region in India
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چکیده
منابع مشابه
Variability of ionospheric scintillation near the equatorial anomaly crest of the Indian zone
Multistation observations of ionosphere scintillation at VHF (250 MHz) and GNSS L1 frequency from three locations – (i) Bokkhali (BOK) (geographic 21.6 N, 88.2 E, dip 31.48), (ii) Raja Peary Mohan College Centre (RPMC) (geographic 22.66 N, 88.4 E, dip 33.5) and (iii) Krishnath College Centre (KNC), Berhampore (geographic 24.1 N, 88.3 E, dip 35.9) – at∼ 1 latitudinal separations near the norther...
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Scale height is an important parameter in characterizing the shape of the ionosphere and its physical processes. In this study, we attempt to examine and discuss the variation of scale height, H m , around the F-layer peak height during high solar activity at the northern crest of the equatorial ionization anomaly (EIA) region. H m exhibits day-to-day variation and seasonal variation, with a gr...
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This paper essentially deals with the effects of equatorial ionization anomaly gradient on space-based navigation systems like GPS. The equatorial region of the ionosphere, which extends about ±30dip about the magnetic equator, is characterized by a steep latitudinal gradient, not only in the maximum ionization but also in the total electron content (TEC), through a major part of the day. This ...
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Ionospheric total electron content (TEC) of the equatorial ionization anomaly (EIA) is studied by analyzing dual-frequency signals of the Global Position System (GPS) acquired from a network of receivers around the AsianAustralian region during 1996–2004. The latitude, occurrence time, strength of the most developed EIA crest, and crest-to-trough ratio (CTR) for both the noon and post-sunset se...
متن کاملSolar activity eects in the ionospheric D region*
Variations in the D-region electron concentration within the solar activity cycle are considered. It is demonstrated that conclusions of various authors, who have analyzed various sets of experimental data on [e], dier signi®cantly. The most reliable seem to be the conclusions based on analysis of the [e] measurements carried out by the Faraday rotation method and on the theoretical concepts o...
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ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2009
ISSN: 1432-0576
DOI: 10.5194/angeo-27-1047-2009