HR: 0800h
AN: SM51B-0529    [Abstracts]
TI: On the Earth's Magnetospheric Nonequilibrium Dynamics and the Fluctuation theorem
AU: De Michelis, P
EM: demichelis@ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, Roma, 00143, Italy
AU: * Consolini, G
EM: giuseppe.consolini@ifsi-roma.inaf.it
AF: Ist. Fisica Spazio Interplanetario, INAF, Via del Fosso del Cavaliere, 100, Roma, 00133, Italy
AB: The Earth's magnetosphere evolves as an out-of-equilibrium system due to the continuous coupling with the solar wind and the Earth's ionosphere. Here, we test the Fluctuation Theorem for the magnetospheric dynamics by investigating the long time evolution of the Earth's magnetospheric ring-current, as monitored by the geomagnetic Dst-index. We find that the symmetries implied by the Fluctuation Theorem are all verified, thus providing a proof of the existence of a steady-state far-from-equilibrium for the Earth's magnetosphere.
DE: 2740 Magnetospheric configuration and dynamics
DE: 2788 Magnetic storms and substorms (7954)
DE: 4430 Complex systems
DE: 4475 Scaling: spatial and temporal (1872, 3270, 4277)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting