Observational Constraints on Theoretical Models of Plasma Entry for Northward IMF

Details Observational Constraints on Theoretical Models of Plasma Entry for Northward IMF Observational Constraints on Theoretical Models of Plasma Entry for Northward IMF

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh33c..01j&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH33C-01

Physics

2724 Magnetopause And Boundary Layers, 2728 Magnetosheath, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 7827 Kinetic And Mhd Theory, 7859 Transport Processes

Scientific paper

Several observational constraints for plasma entry have been recently reported [Wing et al., J. Geophys. Res., A08205, 2005]. In situ GEOTAIL particle observations and remote observations of plasma along the magnetotail flanks inferred using DMSP indicate that during prolonged periods of northward IMF a dawn-dusk asymmetry in the global density and temperature profiles develops in the plasma sheet. Plasma filling rates can also be estimated from both in situ and remote observations. We discuss the time scale for the filling of the plasma sheet as well as possible causes for the dawn-dusk asymmetries in the context of particle entry mechanisms such as cusp reconnection, Kelvin-Helmholtz instabilities, and kinetic Alfvén waves.

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