Open AccessQuasi-five- and ten-day oscillations in f0F2 and their possible connection with oscillations at lower ionospheric heights
Author(s) -
David Altadill,
Jan Laštovička
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-4001
Subject(s) - amplitude , ionosphere , critical frequency , physics , atmospheric sciences , oscillation (cell signaling) , geodesy , geology , geophysics , optics , chemistry , biochemistry
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