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Volcanic eruptions on Io - Implications for surface evolution and mass lossActive volcanism on Io results in a continual resurfacing of the satellite. Analysis of required burial rates to erase impact craters, the mass production in the observed plumes, and the energy requirements for the volcanic activity suggest resurfacing rates of 0.001 to 10 cm/yr in recent geologic time. If this rate is typical of the last 4.5 Gyr, then extensive recycling of the upper crust and mantle must have occurred. The currently estimated loss rate of S, O, and Na from Io into the magnetosphere corresponds to only a small fraction of the resurfacing rate and should not have resulted in either extensive erosion or total depletion of any of the escaping species.
Document ID
19830035024
Document Type
Other - Collected Works
Authors
Johnson, T. V. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Soderblom, L. A. (U.S. Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-08395
CONTRACT_GRANT: NAS7-100
CONTRACT_GRANT: NASA ORDER W-13709
PROJECT: PROJECT VOYAGER
Distribution Limits
Public
Copyright
Other