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Authors: Lastovicka, J.* 
Mlch, P.* 
Title: Solar cycle effect on oscillations in the period range of 2-20 days in the F region of the ionosphere
Issue Date: Aug-1996
Series/Report no.: 39/4
Keywords: Ionosphere
planetary waves
solar cycle
Subject Classification01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous 
Abstract: The results of Lastovicka and Mlch (1994) and Altadill and Lastovicka (1996) are extended by the use of f0F2 and h'F data from Juliusruh, Lannion and Rome. There is a strong solar cycle effect in amplitudes of oscillations in f0F2 but none or a weak solar cycle effect in relative amplitudes of oscillations in f0F2 and in amplitudes of oscillations in h'F. The conditions when the planetary wave type oscillations should be taken into account in short-term predictions and when, on the other hand, they need not be taken into account, are partly specified.
Appears in Collections:Annals of Geophysics

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