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Eruptions arising from tidally controlled periodic openings of rifts on Enceladus

Author

Listed:
  • T. A. Hurford

    (Planetary Geodynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA)

  • P. Helfenstein

    (CRSR, Cornell University, Ithaca, New York 14853, USA)

  • G. V. Hoppa

    (Raytheon, Woburn, Massachusetts 01801, USA)

  • R. Greenberg

    (Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA)

  • B. G. Bills

    (Planetary Geodynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
    Institute for Geophysics and Planetary Physics, Scripps Institution of Oceanography, La Jolla, California 92093, USA)

Abstract

High tide on Enceladus The Cassini flyby of 14 July 2005 revealed plumes of water vapour and ice associated with the 'tiger stripe' features on the surface of Saturn's icy moon Enceladus. Since then the challenge has been to explain the nature of the plumes and the forces driving them. Two papers this week offer an explanation that accounts for both the plume characteristics and the presence of hot spots without the need to assume the existence of near-surface liquid water, a requirement of some previous models. Nimmo et al. identify tidally driven lateral fault motions near the tiger stripes as the most likely drivers of heat and vapour production. And Hurford et al. show that as Enceladus orbits Saturn, the parent planet's tides make the satellite's ice flex. This may cause the tiger stripes to open and close periodically, exposing volatile gases and allowing them to be released.

Suggested Citation

  • T. A. Hurford & P. Helfenstein & G. V. Hoppa & R. Greenberg & B. G. Bills, 2007. "Eruptions arising from tidally controlled periodic openings of rifts on Enceladus," Nature, Nature, vol. 447(7142), pages 292-294, May.
    • Handle: RePEc:nat:nature:v:447:y:2007:i:7142:d:10.1038_nature05821
    DOI: 10.1038/nature05821
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    Cited by:

    1. Ondřej Souček & Marie Běhounková & Martin Lanzendörfer & Gabriel Tobie & Gaël Choblet, 2024. "Variations in plume activity reveal the dynamics of water-filled faults on Enceladus," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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