Figure 3From: Study of Pc1 pearl structures observed at multi-point ground stations in Russia, Japan, and CanadaTime series analysis in case 1. (Top to bottom) band-pass filtered (0.5 to 1.2 Hz) Pc1 waveform of the magnetic field of the H and D components observed at ATH, MGD, and MOS at (a) 10:24 to 10:26 and (b) 10:43 to 10:45 UT on 8 April 2010. Red solid lines indicate upper envelope of Pc1 pearl structures.Back to article page