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2011 Fiscal Year Final Research Report

Rheology of ice-rock mixtures : New approach from neutron diffraction experiments

Research Project

  • PDF
Project/Area Number 22840049
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Solid earth and planetary physics
Research InstitutionKobe University (2011)
Japan Atomic Energy Agency (2010)

Principal Investigator

YASUI Minami  神戸大学, 自然科学系先端融合研究環, 助教 (30583843)

Project Period (FY) 2010 – 2011
Keywords氷衛星 / 熱進化 / 流動則 / 変形機構 / 中性子回折 / 氷粒子粒径依存性 / 岩石粒子粒径依存性
Research Abstract

To construct a rheological model used for thermal evolution of icy satellites, neutron diffraction experiments were carried out to study a time variation of crystal properties for D2O ice, and deformation experiments were also carried out to determine a flow law of ice-rock mixtures depending on the ice and rock particle sizes. From neutron diffraction experiments, the crystal properties were found not to change with time. From deformation experiments, the deformation strength was found to change significantly with a rock particle size at high rock fractions : the strength of ice-rock mixtures with a rock particle size smaller than 50μm was larger than that for pure ice while the strength with a rock particle size larger than 1 mm was smaller than that for pure ice.

  • Research Products

    (10 results)

All 2011 2010 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (6 results) Remarks (1 results)

  • [Journal Article] Flow law of ice-silica mixtures and the effects of silica content and porosity, Physics and Chemistry of Ice2011

    • Author(s)
      Minami Yasui, Masahiko Arakawa
    • Journal Title

      Hokkaido University Press

      Volume: 2011 Pages: 387-395

    • Peer Reviewed
  • [Journal Article] Rate-dependent strength of porous ice-silica mixtures and its implications for the shape of small to middle-sized icy satellites2010

    • Author(s)
      Minami Yasui, Masahiko Arakawa
    • Journal Title

      Icarus

      Volume: 210 Pages: 956-967

    • Peer Reviewed
  • [Journal Article] 氷・シリカ微粒子混合物の流動則に対する空隙の効果:氷衛星の地形緩和への応用2010

    • Author(s)
      保井みなみ, 荒川政彦
    • Journal Title

      日本惑星科学会学会誌「遊星人」

      Volume: vol.19, no.2 Pages: 136-147

    • Peer Reviewed
  • [Presentation] 火星凍土を模擬した氷・固体粒子混合物のレオロジーに関する実験的研究2011

    • Author(s)
      保井みなみ, 荒川政彦
    • Organizer
      日本惑星科学会2011年度秋季講演会
    • Place of Presentation
      神奈川・相模原
    • Year and Date
      20111000
  • [Presentation] 氷・岩石混合物の流動則に対する岩石粒子のサイズと形状の効果2011

    • Author(s)
      保井みなみ, 荒川政彦
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉・幕張
    • Year and Date
      20110500
  • [Presentation] 圧子圧入試験による氷・岩石混合物の局所的変形強度の測定2010

    • Author(s)
      保井みなみ, 荒川政彦
    • Organizer
      日本惑星科学会2010年度秋季講演会
    • Place of Presentation
      名古屋
    • Year and Date
      20101000
  • [Presentation] Flow law of ice-silica mixtures and the effects of silica content and porosity2010

    • Author(s)
      Minami Yasui, Masahiko Arakawa
    • Organizer
      12^<th> International Conference on the Physics and Chemistry of Ice
    • Place of Presentation
      Sapporo, Hokkaido
    • Year and Date
      20100900
  • [Presentation] 圧子圧入法を用いた氷物質の変形実験:局所的な変形強度を調べる新しい手法の確立2010

    • Author(s)
      保井みなみ, 荒川政彦
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      千葉・幕張
    • Year and Date
      20100500
  • [Presentation] マクスウェル粘弾性モデルを用いた小・中氷衛星の地形緩和条件の推定2010

    • Author(s)
      保井みなみ, 荒川政彦
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      千葉・幕張
    • Year and Date
      20100500
  • [Remarks] 神戸大学・実験惑星科学グループホームページ

    • URL

      http://www.edu.kobe-u.ac.jp/fsci-epsl/

URL: 

Published: 2013-07-31  

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