Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm41b0811n&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM41B-0811
Physics
2411 Electric Fields (2712), 2431 Ionosphere/Magnetosphere Interactions (2736), 2704 Auroral Phenomena (2407), 7835 Magnetic Reconnection, 7843 Numerical Simulation Studies
Scientific paper
The magnetospheric boundary is of central importance for the transport of mass, energy, and momentum into magnetosphere. However, for northward IMF the transport of mass into the magnetosphere is not well understood. In particular for strongly parallel magnetic fields on the two sides of the magnetopause, magnetic reconnection does not operate or is inefficient for the mass transport. For largely parallel fields the Kelvin-Helmholtz (KH) mode is unstable for k vectors largely perpendicular to the magnetic field. Although the KH mode is an ideal instability the deformation of the the boundary magnetic field through the KH can generate strong current layers and force magnetic reconnection within the KH vortex motion. We have recently evaluated this plasma transport in the framework of two-dimensional MHD simulation. Here we investigate the role of Hall dynamics using Hall MHD simulations. Of particular interest are the physics of the secondary reconnection processes and the rate of the plasma transport.
Nykyri Katariina
Otto Andreas
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