Figure 5From: Study of Pc1 pearl structures observed at multi-point ground stations in Russia, Japan, and CanadaThe cross-correlation analysis in case 1. Cross-correlation between H component at ATH and D component at MGD, obtained using upper envelope of Pc1 pearl structures at (a) 10:24:00 to 10:26:08 and (b) 10:43:00 to 10:45:08 UT on 8 April 2010.Back to article page