The Application of Wavelet Analysis for the Detection of Planetary Wave Type Oscillations in the Ionospheric Total Electron Content

Ionospheric Total Electron Content (TEC) maps are analysed for detecting oscillations with typical periods of planetary waves (PW). The Fourier transform and the continuous wavelet transform are combined for the spectral analyses of the data set. A few ionospheric oscillations found in TEC have typical properties of PW. However, most of the zonal mean TEC variations, which dominate the ionospheric variability, are allocated to the variability of the solar influence. Propagating and standing waves are supposed to occur due to PW.