Tests and consequences of ballooning in the RCM-E

Details Tests and consequences of ballooning in the RCM-E Tests and consequences of ballooning in the RCM-E

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm13a1113t&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM13A-1113

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Computation

2730 Magnetosphere: Inner, 2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2760 Plasma Convection (2463)

Scientific paper

The Rice Convection Model - Equilibrium (RCM-E) combines the drift physics and magnetosphere-ionosphere coupling computational machinery of the RCM with a model of equilibrium magnetic field that computes the magnetic field that is in static force balance with the RCM-computed pressures. RCM-E simulations of a growth phase frequently exhibit growing ripples associated with the highly stretched magnetic-field configurations. We have applied the Fast-MHD stability analysis algorithm [Crabtree et al., 2003] to RCM-E computed configurations with the result that suggests the system is MHD ballooning unstable. If one assumes that in the magnetosphere, the occurrence of ballooning would result in the modification of the specific entropy of the plasma this would result not only in the injection of plasma into the inner magnetosphere, but also the reconfiguration of the system to a more stable state. We will use the RCM-E to model the consequences on the overall stability of the system when a depleted channel is put in the model and the code was then allowed to evolve in a similar fashion similar to that described by Lemon et al [2004].

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