Sulfur Dioxide: Episodic Injection Shows Evidence for Active Venus Volcanism

  title={Sulfur Dioxide: Episodic Injection Shows Evidence for Active Venus Volcanism},
  author={Larry W. Esposito},
  pages={1072 - 1074}
  • L. Esposito
  • Published 9 March 1984
  • Environmental Science, Geology, Physics
  • Science
Pioneer Venus ultraviolet spectra from the first 5 years of operation show a decline (by more than a factor of 10) in sulfur dioxide abundance at the cloud tops and in the amount of submicron haze above the clouds. At the time of the Pioneer Venus encounter, the values for both parameters greatly exceeded earlier upper limits. However, Venus had a similar appearance in the late 1950's, implying the episodic injection of sulfur dioxide possibly caused by episodic volcanism. The amount of haze in… 
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