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Evidence for lightning on Venus (1979)

Taylor, W. W. L. ; Scarf, F. L. ; Brace, L. H. ; [et al.]

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Publication Date: 2011-08-17

Description: Evidence for lightning on Venus obtained by the Pioneer Venus 1 Orbiter is presented. The first indications of lightning were detected by the electric field detector on board the Orbiter when the spacecraft periapsis, which is well within the ionosphere, moved into the night side of the planet. Impulsive wave signals were primarily detected at altitudes less than 25 km, and were found to be strongest at frequencies corresponding to propagation in the whistler mode, occurring at an average rate of about 0.5/sec. The signals were often observed during intervals of low and variable electron densities. It is tentatively concluded on the basis of the above observations that the impulsive events were caused by Venusian lightning.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Nature; 279; June 14

Format: text

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