Model calculations of the dayside ionosphere of Venus at solar minimum

Details Model calculations of the dayside ionosphere of Venus at solar minimum Model calculations of the dayside ionosphere of Venus at solar minimum

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2743s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 23, p. 2743-2746

Physics

Electron Density Profiles, Electron Energy, Magnetohydrodynamics, Planetary Ionospheres, Solar Planetary Interactions, Solar Wind, Venus Atmosphere, Continuity Equation, Magnetic Fields, Mathematical Models, Pioneer Venus 1 Spacecraft

Scientific paper

The dayside ionosphere of Venus at solar minimum was studied using one-dimensional MHD model. The observed electron density profiles were reproduced reasonably well, assuming that the ionosphere of Venus at solar minimum is magnetized by the solar wind. A bump or a ledge structure of the electron density profile at the altitude range 170-200 km observed by the Pioneer Venus radio occultation measurements were also reproduced under magnetized conditions. It was found that the bump structure is more apparent and more realistic for lower electron temperatures, suggesting that electron temperatures at low altitudes (less than 200 km) significantly decrease from a solar maximum period to a solar minimum period.

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