Fig. 2

Typical example. Magnetic energy spectrum for the magnetic field fluctuations in the Venus magnetosheath on 21 May, 2008 (cf. Fig. 1) (a), the angle between the wave vector and the mean magnetic field in degrees (b), the ratio of the intermediate to the smallest eigenvalues obtained by minimum variance analysis (c), and the magnetic compressibility (d) as a function of the frequencies in the spacecraft frame