Fig. 4From: Spatial scale of geomagnetic Pc5/Pi3 pulsations as a factor of their efficiency in generation of geomagnetically induced currentsParameters of the event 1 pulsation in the N–S direction: a, b \(B_Y\) and \(B_X\) waveforms at KEV (magenta) and SOD (blue); c normalized PSD spectra; d, e N–S spectral coherence and phase difference for \(B_Y\) (solid) and \(B_X\) —(dashed); f South-to-North PSD ratio for \(B_Y\) (solid) and \(B_X\) - (dashed)Back to article page