Computer Science
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983kosis..21..619k&link_type=abstract
Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 21, July-Aug. 1983, p. 619-632. In Russian.
Computer Science
1
Atmospheric Electricity, Satellite Observation, Venus Atmosphere, Atmospheric Stratification, Night Sky, Pioneer Venus Spacecraft, Planetary Ionospheres, Planetary Magnetic Fields, Spaceborne Experiments
Scientific paper
Probe studies of the electrical activity of the Venus atmosphere are examined with particular attention given to the Pioneer-Venus OEFD experiment. Electromagnetic-radiation measurements demonstrate the presence of numerous electric discharges in the atmosphere, the pulse succession frequency from a single source being 20 and more per second. Owing to the presence of trapped magnetic fields in layers of the nocturnal ionosphere above the electron maximum, the most low-frequency components of the atmospherics (100-300 Hz) propagate in the whistler mode and are recorded by orbiting spacecraft above the night side of the planet. Low electron density was observed on the day side of the planet up to heights of about 115 km, where the collisional damping of LF waves occurs. The sources of EM emission (the discharges) may be located significantly below the cloud layer, and the mechanism for the accumulation of space charge can differ from the terrestrial mechanism.
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