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Lava fountain heights at Pu'u 'O'o, Kilauea, Hawaii - Indicators of amount and variations of exsolved magma volatilesFactors most important in determining fountain height in Hawaiian-type basaltic eruptions were assessed on the basis of theoretical calculations and observations at Pu'u 'O'o vent, east rift zone of Kilauea, Hawaii. It is shown that fountain height is very sensitive to changes in exsolved gas content (and, thus, can be used to estimate variability in exsolved gas content) and relatively insensitive to large variations in volume flux. Volume flux was found to be the most important parameter determining the equilibrium vent diameter. The results of calculations also indicate that there was a general increase in magma gas content over the first 20 episodes of the Pu'u 'O'o eruption and that gas depletion took place in the conduit beneath the vent during repose periods.
Document ID
19880038444
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Head, James W., III
(Brown University Providence, RI, United States)
Wilson, Lionel
(Lancaster, University United Kingdom)
Date Acquired
August 13, 2013
Publication Date
December 10, 1987
Publication Information
Publication: Journal of Geophysical Research
Volume: 92
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
88A25671
Funding Number(s)
CONTRACT_GRANT: NGR-40-002-088
CONTRACT_GRANT: NAGW-713
Distribution Limits
Public
Copyright
Other

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