A one-dimensional time-dependent model of the magnetized ionosphere of Venus

Details A one-dimensional time-dependent model of the magnetized ionosphere of Venus A one-dimensional time-dependent model of the magnetized ionosphere of Venus

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7317s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7317-7330.

Physics

35

Atmospheric Models, Magnetic Field Configurations, Planetary Ionospheres, Planetary Magnetic Fields, Venus Atmosphere, Atmospheric Circulation, Daytime, Electromagnetic Interactions, Plasma Density, Time Dependence, Venus, Time Dependency, Models, Magnetization, Ionosphere, Evolution, Magnetic Fields, Plasma, Dayside, Calculations, Comparisons, Decay, Structure, Solar Wind, Interaction, Pressure, Convection, Altitude, Time Scale, Diffusion, Density, Parameters, Chemistry, Boundaries, Numerical Methods, Velo

Scientific paper

The behavior and time evolution of the large-scale magnetic fields and ionospheric plasma of the dayside Venus ionosphere were studied using a one-dimensional model. The coupled continuity, momentum, and Maxwell's equations were solved simultaneously for three ions (O+, O2+, H+) and the magnetic field. The CO2+ ion was included photochemically. The calculated magnetic field profiles are in good agreement with observations made by the Pioneer Venus orbiter magnetometer. Good agreement was also obtained between the calculated and observed plasma densities for altitudes below 250 km including the electron density "ledge" near 190 km in magnetized ionospheres. However, the significant disagreement between the calculated and observed plasma densities at high altitudes suggests that under magnetized conditions, horizontal transport processes become important in removing the plasma and/or the magnetic field even in the subsolar region.

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