Fig. 2.
Panel a: one-minute averages of solar wind parameters: wind speed [km s−1], magnetic field intensity [nT], proton number density [cm−3], and proton temperature [K] are shown (from top to bottom). Panel b: trace of the power density spectral matrix of magnetic field fluctuations, normalized to the square value of the mean magnetic field intensity, relative to the time interval highlighted by the shaded area in the left panel.
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