Plasma sheet bursty bulk flows (BBF) and the associated magnetic field fluctuations appear to exhibit characteristic features which are typical for hydrodynamic or MHD turbulence. Second order statistical description of turbulence includes the estimation of power-law scaling indices from power spectra over a range of frequencies. Here we estimate scaling indices by a novel wavelet method using FGM burst mode (~67 Hz) magnetic field measurements from the Cluster spacecraft. We show that the scaling index changes almost continuously on small and large scales. This statistical non-stationarity feature is caused by the occurrence of BBFs. The spectral index for small-scale, BBF-associated magnetic turbulence, estimated near the current sheet is close to 5/3, indicative of the inertial range energy spectrum of three-dimensional turbulence. Away from the current sheet the small-scale spectral index increases. Independent of position, large-scale spectral indices approach 3 which is indica...
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