Effects of insoluble particles on grain growth in polycrystalline ice: Implications for rheology of ice shells of icy satellites

Tomoaki Kubo, Hiroyoshi Nakata, Takumi Kato

Research output: Contribution to journalLetter

4 Citations (Scopus)

Abstract

Effects of small volume fractions of insoluble particles on grain growth rates of polycrystalline ice were examined at 270 K. The presence of approximately 1 vol% of insoluble particles significantly inhibits the grain growth, and this inhibition effect strongly depends on the particle size. The observed grain growth behavior of ice can be reasonably interpreted on the basis of the Zener pinning effect. Our preliminary results suggest that low viscosities due to small grain sizes required for convective instability in ice shells of icy satellites are achieved by the presence of very small fractions of fine silicate dust particles.

Original languageEnglish
Pages (from-to)301-306
Number of pages6
JournalJournal of Mineralogical and Petrological Sciences
Volume104
Issue number5
DOIs
Publication statusPublished - Oct 1 2009

Fingerprint

icy satellites
rheology
ice
shell
viscosity
grain size
silicate
particle size
dust
silicates
particle
effect

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

Cite this

Effects of insoluble particles on grain growth in polycrystalline ice : Implications for rheology of ice shells of icy satellites. / Kubo, Tomoaki; Nakata, Hiroyoshi; Kato, Takumi.

In: Journal of Mineralogical and Petrological Sciences, Vol. 104, No. 5, 01.10.2009, p. 301-306.

Research output: Contribution to journalLetter

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AB - Effects of small volume fractions of insoluble particles on grain growth rates of polycrystalline ice were examined at 270 K. The presence of approximately 1 vol% of insoluble particles significantly inhibits the grain growth, and this inhibition effect strongly depends on the particle size. The observed grain growth behavior of ice can be reasonably interpreted on the basis of the Zener pinning effect. Our preliminary results suggest that low viscosities due to small grain sizes required for convective instability in ice shells of icy satellites are achieved by the presence of very small fractions of fine silicate dust particles.

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