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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Evidence for presence of a global quasi-resonant mode of oscillations during high-intensity long-duration continuous AE activity (HILDCAA) events

Fig. 4

This figure is similar to Fig. 2, but for the magnetic field and TEC measurements. The top left panel shows a the temporal variations in the H-component of the geomagnetic field for three latitudinally well-separated stations RES (black), OTT (blue), and KOU (red) for the 2003 event. The top right panel shows the c variations of the H-component of magnetic field for the stations’ RES (black), OTT (blue), and HUA (red) for the 2017 event. The corresponding wavelet spectra are provided in the middle panels for the similar period, as mentioned in Fig. 2. The bottom panels show the temporal variations of VTEC b FAIR, and d BAKE stations, and the corresponding wavelet spectra are also provided in the bottom panel

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