Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsm53a..03j&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SM53A-03
Other
2728 Magnetosheath, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 7827 Kinetic And Mhd Theory, 7859 Transport Processes
Scientific paper
Nearly every magnetopause crossing is characterized by large amplitude, transverse wave activity with frequencies below the ion cyclotron frequency. The wave properties are consistent with mode conversion that couples large-scale MHD surface fluctuations with ion gyroradius scale kinetic Alfven waves in the large Alfven gradient at the magnetopause. We investigate the mode conversion process using analytic theory and hybrid simulations considering the contribution of kinetic Alfven wave turbulence to particle transport and heating as a function of wave amplitude and other spectral properties. The results are compared with in situ satellite data and global plasma sheet profiles that exhibit asymmetries in plasma entry, heating, and specific entropy. We also discuss the importance of heavy ions, which have been found in greater concentration on the duskside magnetopause, on kinetic Alfven waves and other entry mechanisms.
Johnson Jay Robert
Kim Erik
Lin Yangtin
Wing Simon
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