HR: 1340h
AN: SM33A-1249    [Abstracts]
TI: Nonlinear Interaction of Io's Disturbance System With the Inhomogenous Jovian Magnetosphere
AU: * Jacobsen, S
EM: jacobsen@geo.uni-koeln.de
AF: Institut f\"ur Geophysik u. Meteorologie, Universit\"at zu K\"oln, Albertus-Magnus-Platz, Cologne, 50923 Germany
AU: Neubauer, F M
EM: neubauer@geo.uni-koeln.de
AF: Institut f\"ur Geophysik u. Meteorologie, Universit\"at zu K\"oln, Albertus-Magnus-Platz, Cologne, 50923 Germany
AU: Backes, H
EM: backes@geo.uni-koeln.de
AF: Institut f\"ur Geophysik u. Meteorologie, Universit\"at zu K\"oln, Albertus-Magnus-Platz, Cologne, 50923 Germany
AU: Schilling, N
EM: schilli@geo.uni-koeln.de
AF: Institut f\"ur Geophysik u. Meteorologie, Universit\"at zu K\"oln, Albertus-Magnus-Platz, Cologne, 50923 Germany
AB: We present nonlinear, time-dependent, three-dimensional simulations of the magnetohydrodynamic interaction of Io's disturbance system with the inhomogeneous Jovian magnetosphere. We have expanded the well-known ZEUS-3D code to generate our model in idealized MHD. Since field and plasma in the vicinity of Io and its Alfven Wing are strongly disturbed according to observations, we focus on the nonlinear nature of the interaction and thereby extend previous work. Moreover, we discuss the transition from the linear to the strongly nonlinear case and observe profound differences. Of particular importance are multiple wave reflections at the torus boundaries and the Jovian ionosphere which have been treated only linearly in the past. Our magnetospheric model is idealized by assuming straight field lines in the initial condition. Io is implemented as a sphere of neutral gas. The Simulation is carried forward in time until a steady state is reached in Io's vicinity and its rest frame. The results are applicable to the Jovian and Saturnian system etc.
DE: 7839 Nonlinear phenomena
DE: 7843 Numerical simulation studies
DE: 7868 Wave/wave interactions
DE: 2732 Magnetosphere interactions with satellites and rings
DE: 2752 MHD waves and instabilities
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting