Quasi-five- and ten-day oscillations in f0F2 and their possible connection with oscillations at lower ionospheric heights

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D. Altadill
J. Lastovicka

Abstract

The statistical analysis of the 5-day and 10-day oscillations inferred in the upper and lower ionosphere in Central Europe from f0F2 measured in Pruhonice and the radio wave absorption in the lower ionosphere shows a remarkable degree of similarity for relative amplitudes of oscillations (not for absolute amplitudes). The relative amplitudes in both regions do not express a significant solar cycle effect and their seasonal variation is also similar except for winter. The typical relative amplitude of both 5- and 10-day oscillations in the F2-region is about 4%, which is useful information for PRIME.

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1.
Altadill D, Lastovicka J. Quasi-five- and ten-day oscillations in f0F2 and their possible connection with oscillations at lower ionospheric heights. Ann. Geophys. [Internet]. 1996Nov.25 [cited 2021Oct.20];39(4). Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4001
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