Plasma Heating and Transport at the Magnetopause due to Nonlinear interactions with Kinetic ULF Waves

Details Plasma Heating and Transport at the Magnetopause due to Nonlinear interactions with Kinetic ULF Waves Plasma Heating and Transport at the Magnetopause due to Nonlinear interactions with Kinetic ULF Waves

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm43d..07j&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM43D-07

Physics

2724 Magnetopause And Boundary Layers, 7805 Chaos (4420), 7827 Kinetic And Mhd Theory, 7839 Nonlinear Phenomena (4400, 6944), 7859 Transport Processes

Scientific paper

The magnetopause and boundary layer are typically characterized by large amplitude transverse ULF wave activity with frequencies below the ion cyclotron frequency. The wave properties are consistent with a mode conversion process that couples large-scale surface MHD fluctuations with kinetic Alfvén waves at the magnetopause boundary. We model the waves with theory and global three-dimensional hybrid simulations, and we discuss the importance of plasma flow for this process along the flanks. We find that ions and electrons can interact nonlinearly with these waves leading to perpendicular heating of ions, parallel heating of electrons, and plasma transport across the magnetopause boundary. We compare these theoretical findings with both in situ GEOTAIL particle observations and remote observations of plasma along the magnetotail flanks inferred using DMSP and discuss possible causes for dawn-dusk asymmetries in the particle distributions that are manifest in the global density and temperature profiles.

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