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Earth, Planets and Space
Figure 9 | Earth, Planets and Space

Figure 9

From: Fast and ultrafast Kelvin wave modulations of the equatorial evening F region vertical drift and spread F development

Figure 9

Wavelet power spectra of the solar flux F10.7 and auroral activity indices. The top panel shows the wavelet spectrum of F10.7 index. The middle panel shows the wavelet spectrum of the AE averages during 15 to 18 LT just prior to the PRE peak drift velocity (one value per day) to verify possible influence of prompt penetration electric fields on the PRE. The bottom panel shows the corresponding results for the daily average AE values to verify any possible influence of disturbance dynamo electric field on the PRE vertical drift.

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