Fig. 5From: A case study of correspondence between Pc1 activity and ionospheric irregularities at polar latitudesThe dynamical spectrum (top panel) and SNR(f) (middle panel) of Pc1 pulsations at DMC on 22 February 2007 between 0200 and 1400 UT, and the coherence between D components at MZS and DMC (bottom panel). Black and red contours indicate an \(SNR\left( f \right)\) greater than 3 at MZS and DMC, respectivelyBack to article page