Eruption conditions of Pele volcano on Io inferred from chemistry of its volcanic plume

Mikhail Zolotov, Jr Fegley B.

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We use thermodynamic models and published 1996 Hubble Space Telescope (HST) observations of SO2, SO, and monatomic sulfur gas in the Pele volcanic plume on Jupiter's moon Io to evaluate the temperature (1440 K) and oxidation state (3.3 log fO2 units below the Ni-NiO buffer) of Pele's magma and exsolved volcanic gas. Combination of these results with 1999 HST data on the SO2/S2 ratio in the Pele plume allows us to calculate pressures (10-4.7-10-5.4 bar) in the vicinity of volcanic vent and to present a detailed chemical model for the plume. Our model indicates that the Pele plume represents volcanic gas, which last equilibrated at magmatic temperature and was not significantly altered in the plume. Finally, the redox state of Pele plume indicates that Io is differentiated and has an oxidized, Fe-metal free mantle.

Original languageEnglish (US)
Pages (from-to)2789-2792
Number of pages4
JournalGeophysical Research Letters
Volume27
Issue number17
DOIs
StatePublished - 2000
Externally publishedYes

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Io
volcanoes
volcanic eruptions
plumes
volcanology
volcano
volcanic eruption
plume
chemistry
volcanic gas
Hubble Space Telescope
gases
vents
natural satellites
Jupiter (planet)
Jupiter
magma
Moon
Earth mantle
sulfur

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Eruption conditions of Pele volcano on Io inferred from chemistry of its volcanic plume. / Zolotov, Mikhail; Fegley B., Jr.

In: Geophysical Research Letters, Vol. 27, No. 17, 2000, p. 2789-2792.

Research output: Contribution to journalArticle

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