Mathematics – Logic
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.9055g&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E5, p. 9055-9064.
Mathematics
Logic
17
Ion Distribution, Ionospheric Ion Density, Planetary Ionospheres, Venus (Planet), Ion Temperature, Mass Spectrometers, Planetary Magnetic Fields, Solar Planetary Interactions, Venus, Ions, Dayside, Ionosheath, Ionopause, Spacecraft Observations, Pvo Mission, Oims Instrument, Oxygen, Abundance, Intensity, Plasma, Flow, Energy, Thermal Properties, Position (Location), Boundaries, Flux, Magnetic Field, Spectrometry, Origin, Source
Scientific paper
Results of a comprehensive morphological analysis of the dayside superthermal ion presence in the dayside ionopause region of Venus made using the Orbiter Ion Mass Spectrometer measurements are presented. There is a strong inbound-outbound difference in both the number and intensity of the superthermal ions with most events detected on the inbound crossing of the ionopause. The ambient energy of the detected ions is comparable to the ram energy of cold ions relative to the moving spacecraft. A comparison of the locations of the superthermal O(+) ion occurrences with respect to other parameters shows that the superthermals are a characteristic of the ionopause transition separating the essentially stationary ionosphere plasma from the flowing ionosheath plasma as deduced by Taylor et al. (1980) from individual examples.
Grebowsky Joseph M.
Hartle Richard E.
Kasprzak Wayne T.
Mahajan K. K.
Wagner C. G. T.
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