Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p33a1433p&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #P33A-1433
Physics
2736 Magnetosphere/Ionosphere Interactions (2431), 2772 Plasma Waves And Instabilities (2471), 2780 Solar Wind Interactions With Unmagnetized Bodies, 5421 Interactions With Particles And Fields, 5443 Magnetospheres (2756)
Scientific paper
The solar wind interacts directly with the ionosphere of Venus. This is due to the lack of an intrinsic planetary magnetic field. This is significantly different to the terrestrial case where the ionosphere is protected by the Earth's magnetic field. The shear velocity profile at the boundary between the solar wind and Venusian ionosphere can lead to the formation of nonlinear waves along the boundary. High temporal resolution (32Hz) magnetic field data collected by Venus Express is used to analyse the structure, location and rate of occurrence of nonlinear waves on the ionopause. The implications of these observations, with respect to mass loading of the solar wind with ionospheric material and the redistribution of dayside ionospheric plasma to maintain the nightside ionosphere are discussed.
Balikhin Michael A.
Dimmock A.
Pope S. A.
Walker Stephen
Zhang Tian-Ling
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