Physics
Scientific paper
May 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..801n&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 18, May 1991, p. 801-804.
Physics
14
Atmospheric Models, Magnetohydrodynamics, Planetary Ionospheres, Shock Discontinuity, Venus Atmosphere, Continuity Equation, Heat Transmission, Solar Cycles, Two Dimensional Models
Scientific paper
A two-dimensional, time-dependent, shock capturing single-species (O+) hydrodynamic model of the Venus ionosphere, which solves the coupled continuity, momentum and energy equations for the altitude range of 150-500 km and the solar zenith angle range of 0 - 180 deg has been developed and is presented in this paper. It was again demonstrated that the introduction of topside heat inflows leads to calculated dayside electron and ion temperatures, which are consistent with the measured values. In order to reproduce the measured electron temperatures, which are roughly constant over all SZAs, the heating flows had to be reduced significantly over the nightside compared to the dayside values. The calculated transterminator ion flows are supersonic and relatively close to the observed average values. The model predicts a deceleration shock at an SZA of about 135 deg, consistent with the ion temperature and velocity observations.
Gombosi Tamas I.
Kim Jongsoo
Korosmezey A.
Nagy Andrew F.
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