Journal ArticleDOI
High-Temperature Silicate Volcanism on Jupiter's Moon Io
Alfred S. McEwen,L. Keszthelyi,J. R. Spencer,Gerald Schubert,D. L. Matson,R. Lopes-Gautier,K. P. Klaasen,T. V. Johnson,James W. Head,P. Geissler,Sarah A. Fagents,Ashley Davies,M. H. Carr,H. H. Breneman,M. J. S. Belton +14 more
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Infrared wavelength observations of Io by the Galileo spacecraft show that at least 12 different vents are erupting lavas that are probably hotter than the highest temperature basaltic eruptions on Earth today.Abstract:
Infrared wavelength observations of Io by the Galileo spacecraft show that at least 12 different vents are erupting lavas that are probably hotter than the highest temperature basaltic eruptions on Earth today. In at least one case, the eruption near Pillan Patera, two independent instruments on Galileo show that the lava temperature must have exceeded 1700 kelvin and may have reached 2000 kelvin. The most likely explanation is that these lavas are ultramafic (magnesium-rich) silicates, and this idea is supported by the tentative identification of magnesium-rich orthopyroxene in lava flows associated with these high-temperature hot spots.read more
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Emergence of a Habitable Planet
Kevin Zahnle,Nick Arndt,Charles S. Cockell,Alex N. Halliday,Euan G. Nisbet,Franck Selsis,Norman H. Sleep +6 more
TL;DR: The first several hundred million years of Earth's history was studied in this article, where the Moon-forming impact left Earth enveloped in a hot silicate atmosphere that cooled and condensed over ∼1,000 yrs.
Journal ArticleDOI
Implications from Galileo Observations on the Interior Structure and Chemistry of the Galilean Satellites
TL;DR: In this article, data from the recent gravity measurements by the Galileo mission are used to construct a wide range of interior structure and composition models for the Galilean satellites of Jupiter, showing that mantle densities of Io and Europa are consistent with an olivine-dominated mineralogy with the ratios of Mg to Fe components depending on mantle temperature for Io and on ice shell thickness.
Journal ArticleDOI
Discovery of gaseous S2 in Io's Pele plume.
TL;DR: Spectroscopy of Io's Pele plume against Jupiter by the Hubble Space Telescope in October 1999 revealed absorption due to S2 gas, and probably also SO(2) gas with a column density of 7 +/- 3 x 10(16) per square centimeter.
Interior composition, structure and dynamics of the Galilean satellites
TL;DR: In this article, thermal considerations in the maintenance of intra-ice oceans on the icy Galilean satellites were discussed, including melting relations, energy balances and equilibrium models, the probability of oceans and their thicknesses.
Journal ArticleDOI
Active Volcanism on Io as Seen by Galileo SSI
Alfred S. McEwen,Laszlo P. Keszthelyi,Paul Geissler,Damon P. Simonelli,Michael H. Carr,Torrence V. Johnson,Kenneth P. Klaasen,H. Herbert Breneman,Todd J. Jones,James M. Kaufman,K. Magee,David A. Senske,M. J. S. Belton,Gerald Schubert +13 more
TL;DR: Io has been monitored during the nominal Galileo satellite tour from mid 1996 through late 1997 by the Solid State Imaging (SSI) experiment, which was able to observe many manifestations of active volcanism, including changes in the color and albedo of the surface, active airborne plumes, and glowing vents seen in eclipse as discussed by the authors.
References
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Journal ArticleDOI
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TL;DR: The cameras aboard Voyager 1 have provided a closeup view of the Jupiter system, revealing heretofore unknown characteristics and phenomena associated with the planet's atmosphere and the surfaces of its five major satellites.
Journal ArticleDOI
Visible and near-infrared diffuse reflectance spectra of pyroxenes as applied to remote sensing of solid objects in the solar system
TL;DR: In this article, the spin-allowed Fe2+ absorption bands occur in the visible and near-infrared diffuse reflectance spectra of most pyroxenes and the wavelengths of the bands centered near 1 μm and 2 μm vary as functions of pyroxene composition, making possible mineralogical and chemical deductions based on spectral reflectance curves.
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Lunar mare volcanism: Stratigraphy, eruption conditions, and the evolution of secondary crusts
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Galileo at Io: results from high-resolution imaging.
Alfred S. McEwen,Michael J. S. Belton,H. Herbert Breneman,Sarah A. Fagents,Paul Geissler,Ronald Greeley,James W. Head,Gregory V. Hoppa,Windy L. Jaeger,Torrence V. Johnson,Laszlo P. Keszthelyi,Kenneth P. Klaasen,R. Lopes-Gautier,K. Magee,M. P. Milazzo,Jeffrey M. Moore,Robert T. Pappalardo,Cynthia B. Phillips,Jani Radebaugh,Gerald Schubert,P. Schuster,Damon P. Simonelli,Ryan C. Sullivan,Peter C. Thomas,Elizabeth P. Turtle,David A. Williams +25 more