A multifractal approach applied to the magnetic field turbulence in Jupiterʹs magnetosheath

We studied the magnetic field turbulence in Jupiterʹs magnetosheath during the Ulysses inbound trajectory in 1992. This analysis was conducted using nonlinear techniques such as kurtosis, probability density functions, multifractal approach and wavelet analysis. The results from the PDFs and kurtosis analysis, for each magnetic field component, show a strongly non-Gaussian behavior on shorter periods. The multifractal analysis suggests that the fluctuations can be described with a multifractal law due to the intermittent turbulence in the scales from 2 to 200 s. The large magnetic field compressional pulse observed by Tsurutani et al. (1993a) may be the main cause that introduces the intermittency and multifractal behavior for the signal, causing the reduction of the power law=−2.