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Slow dust in Enceladus' plume from condensation and wall collisions in tiger stripe fractures

Author

Listed:
  • Jürgen Schmidt

    (Nichtlineare Dynamik, Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany)

  • Nikolai Brilliantov

    (Nichtlineare Dynamik, Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
    University of Leicester
    Moscow State University)

  • Frank Spahn

    (Nichtlineare Dynamik, Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany)

  • Sascha Kempf

    (Max Planck Institut für Kernphysik
    IGEP, Technische Universität Braunschweig)

Abstract

Two-paced plume The Cassini mission discovered a spectacular plume of water vapour and icy dust particles spewing from ice volcanoes near the south pole of Saturn's moon Enceladus. The plume has a puzzling property that has yet to be explained: the grains are moving more slowly than the vapour. Schmidt et al. present a quantitative model for the condensation of icy grains in the geysers of Enceladus that offers a possible explanation. The speed difference arises whilst the gas and dust are below the surface, where repeated wall collisions of grains combine with re-acceleration by the gas to cause friction that in turn reduces grain velocity.

Suggested Citation

  • Jürgen Schmidt & Nikolai Brilliantov & Frank Spahn & Sascha Kempf, 2008. "Slow dust in Enceladus' plume from condensation and wall collisions in tiger stripe fractures," Nature, Nature, vol. 451(7179), pages 685-688, February.
    • Handle: RePEc:nat:nature:v:451:y:2008:i:7179:d:10.1038_nature06491
    DOI: 10.1038/nature06491
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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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