Analysis of High-Latitude IMF Turbulence

Details Analysis of High-Latitude IMF Turbulence Analysis of High-Latitude IMF Turbulence

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh11b..05s&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH11B-05

Statistics

2134 Interplanetary Magnetic Fields, 2149 Mhd Waves And Turbulence, 7863 Turbulence

Scientific paper

We examine measurements of the interplanetary magnetic field (IMF) by the Ulysses spacecraft from launch until after the first solar pass using a variety of tools to characterize the interplanetary turbulence. We resolve systematic changes in the powerlaw index, the fluctuation anisotropy, and wave vector orientation (geometry) of the inertial-range fluctuations associated with high latitude. We find a decrease in the fluctuation anisotropy relative to the mean magnetic field and an increase in wave power associated with wave vectors parallel to the mean field that can be associated with high spacecraft latitude. Wave vectors perpendicular to the mean magnetic field still dominate the statistics. Preliminary analyses show a consistently flatter power spectrum within the inertial range when compared with low-latitude observations.

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