Figure 7From: Study of Pc1 pearl structures observed at multi-point ground stations in Russia, Japan, and CanadaTime series analysis in case 2. (Top to bottom) band-pass filtered (0.3 to 0.7 Hz) Pc1 waveforms of the magnetic field of H and D components observed at ATH, MGD, and MOS at (a) 11:57 to 11:59 and (b) 12:02 to 12:04 UT on 11 April 2010. Red solid lines indicate upper envelope of Pc1 pearl structures.Back to article page