Open AccessSolar cycle effect on oscillations in the period range of 2-20 days in the F region of the ionosphere
Author(s) -
Jan Laštovička,
P. Mlch
Publication year - 1996
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-4018
Subject(s) - amplitude , ionosphere , solar cycle , physics , atmospheric sciences , critical frequency , range (aeronautics) , period (music) , geophysics , optics , solar wind , plasma , materials science , quantum mechanics , acoustics , composite material
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