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IoA report on the continuing investigation of Io is presented. Gravitational resonance is discussed as the cause of Io's volcanism, and the volcanic activity is explained in terms of sulfur chemistry. Theories concerning the reasons for the two main types of volcanic eruptions on Io are advanced and correlated with geographical features of the satellite. The sulfur and silicate models of the calderas are presented, citing the strengths and weaknesses of each. Problems of the gravitational resonance theory of Io's heat source are then described. Finally, observations of Io planned for the Galileo mission are summarized.
Document ID
19840031406
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Johnson, T. V.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Soderblom, L. A.
(U.S. Geological Survey Reston, VA, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: Scientific American
Volume: 249
ISSN: 0036-8733
Subject Category
Lunar And Planetary Exploration
Accession Number
84A14193
Distribution Limits
Public
Copyright
Other

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