Variability of the ionosphere over Irkutsk at low solar activity |
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Authors: | Nina Zolotukhina Nelya Polekh Olga Pirog |
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Institution: | Institute of Solar-Terrestrial Physics SB RAS, P.O. Box 291, 664033 Irkutsk, Russia |
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Abstract: | Statistical and spectral analyses are performed to investigate variations of two ionosphere F2 layer key parameters, the critical frequency (foF2) and the peak height (hmF2), that were measured over Irkutsk (52.5°N, 104.0°E) from December 2006 to January 2008 under solar minimum. The analyses showed that both parameters contain quasi-harmonic oscillations with periods of Tn = 24/n hours (n = 1–7), among which the diurnal (n = 1) and semidiurnal (n = 2) ones are the strongest. Seasonal variations are explored of mean and median values, spectrum, amplitude, and phase of the diurnal and semidiurnal components of foF2 and hmF2. |
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Keywords: | Ionosphere Spectrum F2 layer Critical frequency Peak height Diurnal and semidiurnal variations |
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