Fig. 1
(a) Fluxgate magnetometer data (66 s averaged subtracted) and (b) trace power spectra of the magnetic field fluctuations. (c and d) Hodogramsshowing band-pass filtered (0.6–4 Hz) fluctuations for the interval marked with an arrow in panel a in the maximum-intermediate and maximum-minimum variance planes. The red arrow in panel d shows B0. Panels e–g: power spectra density of the electric field, differential charge flux density and magnetic field fluctuations, respectively.The frequency range with wave activity (1.4–2.3 Hz) is marked with gray shade.
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