Meeting abstract

EGS, 22nd General Assembly, Vienna, 21-25 April 1997

Abstract:
Recent analyses of Ulysses magnetic field data will be presented. A structure function analysis of small scale fluctuations reveals approximately inertial range turbulence. This turbulence is intermittent, in common with terrestrial turbulence. Comparison with several popular models of intermittent turbulence shows that the p model of Meneveau and Sreenivasan provides the best description of the fluctuations. The reliability of structure function estimates will be discussed in some detail and a simple criterion for the rejection of unreliable results will be presented. In addition, a novel application of wavelet analysis to the study of MHD turbulence, which can provide intermittency information about anisotropic fluctuations, will be discussed.