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Io’s Volcanos: Latest Results from Galileo and from the Earth

Published online by Cambridge University Press:  30 March 2016

John Spencer
John Spencer*
Affiliation:
Lowell Observatory, 1400 W. Mars Hill Rd., Flagstaff AZ 86001, USA

Abstract

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Three recent close flybys of Io by the Galileo spacecraft, and new observations from the Hubble Space Telescope and ground-based telescopes, have greatly advanced our understanding of Jupiter’s volcanic moon Io. Io’s volcanos are much hotter than previously suspected, perhaps requiring exotic silicate magma compositions. Despite much new data, Io’s largest volcano, Loki, is still poorly understood. New data on Io’s plumes suggest the existence of two types of plumes: primary plumes, relatively rich in S2 gas, which are emitted where magma first reaches the surface, and secondary plumes, more SO2 rich, which result from interaction of lava flows with a volatile-rich substrate.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 611 - 613
Copyright
Copyright © Astronomical Society of Pacific 2002

References

Blaney, D., Johnson, T.V., Matson, D.L., & Veeder, G.L. 1985, Icarus, 113, 220 CrossRefGoogle Scholar
Carr, M. 1986, JGR, 91, 3521 Google Scholar
Davies, A.G. 1996, Icarus, 124, 45 Google Scholar
Howell, R.R. 1997, Icarus, 127, 394 CrossRefGoogle Scholar
Howell, R.R. et al. 2000, JGR, submittedGoogle Scholar
Johnson, T.V., et al. 1988, Science, 242, 1280 Google Scholar
Keszthelyi, L., & McEwen, A.S. 1997, GRL, 24, 2463 Google Scholar
Lopes-Gautier, R. et al. 2000, Science, 288, 1201 Google Scholar
McEwen, A.S. & Soderblom, L. 1983, Icarus, 55, 191 Google Scholar
McEwen, A.S., et al. 1998a, Science, 281, 87 Google Scholar
McEwen, A.S., et al. 1998b, Icarus, 135, 181 Google Scholar
McEwen, A.S. et al. 2000, Science, 288, 1193 Google Scholar
McGrath, M.A., Belton, M.J.S., & Spencer, J.R. 2000, Icarus, 146, 476 Google Scholar
Spencer, J.R. et al. 1997, GRL, 24, 2451 Google Scholar
Spencer, J.R. et al. 2000a, Science, 288, 1198 Google Scholar
Spencer, J.R., Jessup, K., McGrath, M.A., Ballester, G.E., & Yelle, R.V. 2000b, Science, 288, 1208 Google Scholar
Stansberry, J.A., Spencer, J.R., Howell, R.R., Dumas, C., & Vakil, D. 1997, JGR, 24, 2455 Google Scholar
Veeder, G.L., Matson, D.L., Johnson, T.V., Blaney, D.L., & Goguen, J.D. 1994, JGR, 99, 17095 Google Scholar