Amirani (volcano)

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Galileo color mosaic of Amirani and its flow field

Amirani is an active volcano on Jupiter's moon Io. It is located on Io's leading hemisphere at 24°28′N 114°41′W / 24.46°N 114.68°W / 24.46; -114.68 (Amirani).[1]

The volcano is responsible for the largest active lava flow in the entire Solar System, with recent flows dwarfing those of even other volcanos on Io.[2]

Amirani consists of a half-circle shaped, 37 kilometres (23 mi)-wide volcanic pit, which is connected to a 330 kilometres (210 mi)-long compound lava flow by a narrow channel. The southern half of the Amirani flow field is surrounded by a circular, bright sulfur dioxide diffuse deposit, created by a sulfur-rich volcanic plume.[3] The volcano was first observed in images acquired by the Voyager 1 spacecraft in March 1979.[4] Later that year, the International Astronomical Union named this feature after an Georgian fire god, Amirani.


  1. ^ "Amirani". Gazetteer of Planetary Nomenclature. International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN). 2009-04-09. Retrieved 2014-06-27. 
  2. ^
  3. ^ Davies, A. (2007). "Prometheus and Amirani: effusive activity and insulated flows". Volcanism on Io: A Comparison with Earth. Cambridge University Press. pp. 208–216. ISBN 0-521-85003-7. 
  4. ^ Smith, B. A.; et al. (1979). "The Jupiter system through the eyes of Voyager 1". Science 204 (4396): 951–972. Bibcode:1979Sci...204..951S. doi:10.1126/science.204.4396.951. PMID 17800430. 

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