%0 Journal Article
%T Spectral scaling in the turbulent Earth's plasma sheet revisited
%A Z. V r s
%A W. Baumjohann
%A R. Nakamura
%A A. Runov
%A M. Volwerk
%A Y. Asano
%A D. Jankovi ov¨¢
%A E. A. Lucek
%A H. R¨¨me
%J Nonlinear Processes in Geophysics (NPG)
%D 2007
%I Copernicus Publications
%X Bursty bulk flow associated magnetic fluctuations exhibit at least three spectral scaling ranges in the Earth's plasma sheet. Two of the three scaling ranges can be associated with multi-scale magnetohydrodynamic turbulence between the spatial scales from ~100 km to several RE (RE is the Earth's radius). These scales include the inertial range and below ~0.5 RE a steepened scaling range, theoretically not fully understood yet. It is shown that, in the near-Earth plasma sheet, the inertial range can be robustly identified only if multi-scale quasi stationary (MSQS) data intervals are selected. Multiple bursty flow associated magnetic fluctuations, however, exhibit 1/f type scaling indicating that large-scale fluctuations are controlled by multiple uncorrelated driving sources of the bulk flows (e.g. magnetic reconnection, instabilities).
%U http://www.nonlin-processes-geophys.net/14/535/2007/npg-14-535-2007.html