Modeling Mars' Ionospheric Electrodynamics

Details Modeling Mars' Ionospheric Electrodynamics Modeling Mars' Ionospheric Electrodynamics

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p53e1561p&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P53E-1561

Physics

[2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2753] Magnetospheric Physics / Numerical Modeling, [5435] Planetary Sciences: Solid Surface Planets / Ionospheres, [6225] Planetary Sciences: Solar System Objects / Mars

Scientific paper

Mars provides a natural laboratory to study the interactions of plasma with an unmagnetized planet, and in this study we investigate the unique ionospheric electrodynamics of the Martian upper atmosphere. The presence of the Martian atmosphere along with localized regions of intense remanent magnetization enable us to examine the location, strength and direction of currents driven in the ionospheric dynamo for a range of boundary conditions from magnetically shielded to unmagnetized. The presented work covers the initial progress on the implementation and validation of significant modifications to an existing multi-fluid modeling scheme, which enable us to comprehensively account for atmospheric chemistry, ionization processes, thermospheric neutral winds, plasma-plasma interactions and plasma-neutral collisions in Mars’ upper atmosphere. We will examine three representative magnetic topologies; unmagnetized, shielded, and cusp-like with consistent neutral winds to study the role of remanent magnetic field in shaping currents in the dynamo region.

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