Journal ArticleDOI
Io on the eve of the galileo mission
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TLDR
Io, the innermost of Jupiter's large moons, is one of the most unusual objects in the Solar System as discussed by the authors, which produces a global heat flux 40 times the terrestrial value, producing intense volcanic activity and a global resurfacing rate averaging perhaps 1 cm yr−1.Abstract:
▪ Abstract Io, innermost of Jupiter's large moons, is one of the most unusual objects in the Solar System. Tidal heating of the interior produces a global heat flux 40 times the terrestrial value, producing intense volcanic activity and a global resurfacing rate averaging perhaps 1 cm yr−1. The volcanoes may erupt mostly silicate lavas, but the uppermost surface is dominated by sulfur compounds including SO2 frost. The volcanoes and frost support a thin, patchy SO2 atmosphere with peak pressure near 10−8 bars. Self-sustaining bombardment of the surface and atmosphere by Io-derived plasma trapped in Jupiter's magnetosphere causes escape of material from Io (predominantly sulfur, oxygen, and sodium atoms, ions, and molecules) at a rate of about 103 kg s−1. The resulting Jupiter-encircling torus of ionized sulfur and oxygen dominates the Jovian magnetosphere and, together with an extended cloud of neutral sodium, is readily observable from Earth.read more
Citations
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Surface Changes on Io during the Galileo Mission
TL;DR: A careful survey of the Galileo SSI global monitoring images revealed more than 80 apparent surface changes that took place on Io during the 5-year period of observation, ranging from giant plume deposits to subtle changes in the color or albedo of patera surfaces.
Journal ArticleDOI
A novel technology for measuring the eruption temperature of silicate lavas with remote sensing: Application to Io and other planets
Ashley Davies,Sarath D. Gunapala,Alexander Soibel,David Z. Ting,Sir B. Rafol,Megan Blackwell,Paul O. Hayne,Michael W. Kelly +7 more
TL;DR: In this article, the HOT-BIRD detector and a novel, advanced digital readout circuit (D-ROIC) were used to image lava on Io without saturating.
Global Color Variations on Io
Paul Geissler,Alfred S. McEwen,Damon P. Simonelli,R. Lopes-Gautier,Ashley Davies,J. Granahan,Tilmann Denk,Galileo Imaging Team +7 more
TL;DR: Galileo multispectral imaging of Io augments existing Voyager color data by extending the sensitivity to near-infrared wavelengths as discussed by the authors, at resolutions ranging from 10 to 23 km/pixel and phase angles from 4 to 55 degrees.
Book ChapterDOI
Hot Super-Earth Atmospheres
TL;DR: In this article, the authors present the main characteristics of hot rocky super-Earths, with a focus on the potential atmospheric composition obtained by assuming different types of planetary composition and using corresponding model calculations.
25 - The Dynamics of the Jovian magnetosphere
Norbert Krupp,Vytenis M. Vasyliūnas,Joachim Woch,Andreas Lagg,K. K. Khurana,M. G. Kivelson,B. H. Mauk,E. C. Roelof,D. J. Williams,S. M. Krimigis,W. S. Kurth,L. A. Frank,W. R. Paterson +12 more
TL;DR: In the last 30 years, seven spacecraft have visited the gas giant Jupiter and provided only snapshots, each lasting a few days or a week at most, of the state of the magnetosphere as discussed by the authors.
References
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Journal ArticleDOI
Extreme ultraviolet observations from Voyager 1 encounter with Jupiter
A. L. Broadfoot,M. J. S. Belton,P. Z. Takacs,Bill R. Sandel,Donald E. Shemansky,Jay B. Holberg,Joseph M. Ajello,Sushil K. Atreya,Thomas M. Donahue,H. W. Moos,Jean-Loup Bertaux,J. E. Blamont,Darrell F. Strobel,John C. McConnell,Alexander Dalgarno,Richard Goody,Michael B. McElroy +16 more
TL;DR: The observed resonance scattering of solar hydrogen Lyman α by the atmosphere of Jupiter and the solar occultation experiment suggest a hot thermosphere (≥ 1000 K) wvith a large atomic hydrogen abundance.
Journal ArticleDOI
Melting of Io by Tidal Dissipation
TL;DR: The dissipation of tidal energy in Jupiter's satellite Io is likely to have melted a major fraction of the mass, and consequences of a largely molten interior may be evident in pictures of Io's surface returned by Voyager I.
Journal ArticleDOI
Inertial limit on corotation
TL;DR: In this article, the inertial corotation lag is calculated as a function of radial distance in the magnetosphere, the solution being parameterized in terms of the Pedersen conductivity of the atmosphere and the rate at which plasma mass is produced and transported outward.
Journal ArticleDOI
Physics of the Jovian Magnetosphere
TL;DR: In this paper, the authors considered the physics of magnetospheric radio emissions, plasma waves in the Jovian magnetosphere, theories of radio emissions and plasma waves, and magnetosphere models.