Magnetic fields in the ionosphere of Venus

Details Magnetic fields in the ionosphere of Venus Magnetic fields in the ionosphere of Venus

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ssrv...55..201l&link_type=abstract

Space Science Reviews (ISSN 0038-6308), vol. 55, Jan.-Feb. 1991, p. 201-274.

Computer Science

73

Atmospheric Models, Planetary Ionospheres, Planetary Magnetic Fields, Solar Planetary Interactions, Venus Atmosphere, Diurnal Variations, Magnetic Field Configurations, Magnetohydrodynamics, Solar Wind, Venus, Ionosphere, Magnetic Field, Spacecraft Observations, Pvo Mission, Models, Magnetohydrodynamics, Nightside, Origin, Formation, Flux Tube, Calculations, Diffusion, Convection, Magnetic Properties, Description, Mag Instrument, Ionopause, Plasma, Solar Wind, Pressure, Interaction, Thermal Effects, Altitud

Scientific paper

Pioneer Venus Orbiter measurements of magnetic fields in the Venusian ionosphere are reviewed, and theoretical models developed to explain them are discussed. Data on the large- and small-scale magnetic-field structures in the dayside and nightside ionosphere, for both low and high solar-wind dynamic pressure, are presented graphically and characterized in detail. For the MHD models, the derivations of the continuity, momentum, one-fluid momentum, and magnetic induction equations and a generalized formulation of Ohm's law are outlined, and model predictions are compared with the measurements in extensive graphs and diagrams. It is shown that one-dimensional multifluid MHD models are successful in reproducing the observed large-scale features of the subsolar region, at least under certain prescribed conditions, whereas the nightside and small-scale features are only poorly predicted.

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