Fig. 5.
From: ULF waves in the outer magnetosphere: Geotail observation 1 transverse waves
(a) PSDs of plasma flow and magnetic field oscillations in the time interval of 52 minutes from 13:50 on May 19, 1999. Rotational PSDs are plotted separately for the right-handed (R) and left-handed (L) components of transverse flow and magnetic field. (b) Spectral estimates for ground and GOES 8 data. Ground spectra are plotted separately for stations in the morning and afternoon sectors (top and third panels). The bottom panel shows total PSD of IMF variations obtained from ACE data (time shifted by 66.3 min). The labels, L and R, indicated with station codes represent polarization modes at major spectral peaks.