Physics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.6506s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, June 1, 1989, p. 6506-6516.
Physics
90
Daytime, Magnetohydrodynamics, Mars Atmosphere, Planetary Ionospheres, Planetary Magnetic Fields, Solar Planetary Interactions, Convection, Field Strength, Ion Temperature, Ionospheric Ion Density, Oxygen, Mars, Ionosphere, Models, Dayside, Magnetohydrodynamics, Solar Wind, Magnetic Fields, Ions, Density, Pressure, Plasma, Parameters, Velocity, Calculations, Boundaries, Altitude, Comparisons, Spacecraft Observations, Oxygen, Viking Missions
Scientific paper
A one-dimensional multispecies magnetohydrodynamic model of the Martian ionosphere is developed using methods similar to those used by Shinagawa and Cravens (1988) for Venus, and is used to examine the nature of the solar wind interaction with the Martian ionosphere. The four ion species included in the model are CO2(+), O2(+), O(+), and H(+). Scenarios with and without a small intrinsic field are modeled for the Viking conditions (solar minimum). It was found that the inclusion of an intrinsic magnetic field does not improve the agreement between the calculated ion density profiles and the measured ones. The results also indicate that large horizontal plasma motions must be present at high altitudes, indicating that the dynamics of the upper ionosphere of Mars is controlled by the solar wind.
Cravens Thomas E.
Shinagawa Hiroyuki
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