A two-dimensional model of the ionosphere of Venus
作者： T. E. Cravens , S. L. Crawford , A. F. Nagy , T. I. Gombosi
关键词: Solar wind 、 Dynamic pressure 、 Venus 、 Atmosphere of Venus 、 Ionosphere 、 Orbiter 、 Geophysics 、 Physics 、 Atmospheric models 、 Electron precipitation 、 Earth-Surface Processes 、 Ecology (disciplines) 、 Earth and Planetary Sciences (miscellaneous) 、 Space and Planetary Science 、 Palaeontology 、 Forestry 、 Aquatic science 、 Atmospheric Science 、 Soil science 、 Geochemistry and Petrology 、 Oceanography 、 Water Science and Technology
摘要: A substantial nightside ionosphere has been observed on Venus during most orbits of the Pioneer Orbiter. However, some which solar wind dynamic pressure was large, seems to have almost disappeared, existing only as irregular patches low-density plasma. We interpret these observational results using a two-dimensional theoretical model in empirical horizontal velocities are adopted. show that degree transport ions from day night can maintain depends two parameters: (1) flow and (2) ionopause height at terminator. also investigate role electron precipitation supporting ionosphere. Our provides indirect evidence for an enhanced deuterium hydrogen ratio Venus.
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