Fig. 13
From: A statistical analysis of Pc1–2 waves at a near-cusp station in Antarctica
Noon case study. The dynamical power spectrum, signal-to-noise ratio (white areas correspond to SNR < 0), polarization ratio, ellipticity, azimuthal angle, IMF B z component, SW density, and AE index during the October 14, 2010, event. In addition to the OMNI data (blue line), which show large gaps, the WIND data are also plotted (red line). Black and white contours encircle values corresponding to a polarization ratio R > 0.85