HR: 1340h
AN: SA13A-1113    [Abstracts]
TI: 3D multi-fluid simulations of the ionospheric loss rates at Mars from nominal solar wind conditions to magnetic cloud events
AU: * Harnett, E M
EM: eharnett@ess.washington.edu
AF: University of Washington, Dept. of Earth and Space Sciences Box 351310, Seattle, WA 98195-1310 United States
AU: Winglee, R M
EM: winglee@ess.washington.edu
AF: University of Washington, Dept. of Earth and Space Sciences Box 351310, Seattle, WA 98195-1310 United States
AB: 3D multi-fluid simulations are used to investigate the behavior of solar wind protons, and ionospheric oxygen ions for a variety of solar wind conditions, ranging from quiet to storm-like conditions. Ion loss rates and solar wind precipitation rates are calculated for four different anomalous magnetic field orientations. Storms conditions are shown to produce nearly an order of magnitude increase in the outflow rate. Comparison of loss rates for different orientations of the magnetic anomalies relative to the incident solar wind direction show that the anomalies have little effect on loss rates for quiet magnetospheric conditions. But some solar wind conditions lead to dynamic reconnection of the IMF to the anomalous magnetic field, which in turn, can drive additional solar wind precipitation and ionospheric loss.
DE: 6225 Mars
DE: 2431 Ionosphere/magnetosphere interactions (2736)
DE: 2753 Numerical modeling
DE: 2756 Planetary magnetospheres (5443, 5737, 6030)
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting