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2008 Fiscal Year Final Research Report

Investigation of micro-physical and chemical processes in polar ice sheet using high-resolution laser techniques

Research Project

  • PDF
Project/Area Number 16104006
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionNagaoka University of Technology

Principal Investigator

AZUMA Nobuhiko  Nagaoka University of Technology, 工学部, 教授 (70182996)

Co-Investigator(Kenkyū-buntansha) ITO Yoshiro  長岡技術科学大学, 工学部, 教授 (60176378)
AKETAGAWA Masato  長岡技術科学大学, 工学部, 准教授 (10231854)
TAKATA Morimasa  長岡技術科学大学, 工学部, 助教 (50377222)
SATO Kazuhide  長岡工業高等専門学校, 教授 (80113398)
Co-Investigator(Renkei-kenkyūsha) ILKA Hamann  Alfred Wegener Institute, Ph.D.
SEPP Kipfstuhl  Alfred Wegener Institute, Senior researcher
Project Period (FY) 2004 – 2008
Keywords環境変動 / 極地 / 超精密計測 / 結晶物性
Research Abstract

氷床中のミクロ物理化学プロセス解明のため, 精密計測技術を応用し, 以下の成果を得た. 氷床中と同等な極低速な氷試料のクリープ変形速度を計測するため, ナノメートルオーダーの変位計測が可能なレーザー干渉計を開発した. 氷中の不純物濃度分布を測定するため, レーザーアブレーション質量分析装置を構築した. また, 氷床コアの詳細な測定および人工試料の実験から, 結晶粒成長について新たな知見を得た.

  • Research Products

    (12 results)

All 2009 2008 2007 2006 Other

All Journal Article (4 results) Presentation (8 results)

  • [Journal Article] Evolution of ice crystal microstructure during creep experiments2007

    • Author(s)
      Hamann, I., C. Weikusat, N. Azuma and S. Kipfstuhl
    • Journal Title

      J. Glaciol 53(182)

      Pages: 479-489

  • [Journal Article] Evidence of dynamic recrystallization in polar firn

    • Author(s)
      S. Kipfstuhl, S. H. Faria, N. Azuma, and 6 others
    • Journal Title

      JGR-Solid Earth (in press)

  • [Journal Article] Sub-grain boundaries in EPICA Dronning Maudland (EDML) deep ice core

    • Author(s)
      Hamann, I., S. Kipfstuhl, S. H. Faria, and N. Azuma
    • Journal Title

      J. Glaciol (in press)

  • [Journal Article] The multiscale structure of the Antarctic ice sheet. Part I : inland ice, Physics of Ice Core Records

    • Author(s)
      Faria, S. H., S. Kipfstuhl, N. Azuma, J. Freitag, I. Hamann, M. M. Murshed, W. F. Kuhs
    • Journal Title

      volume 2, Hokkaido Univ. Press (in press)

  • [Presentation] レーザーアブレーション質量分析による氷中不純物分布の測定法の開発2009

    • Author(s)
      高田守昌, 伊藤義郎, 東信彦, 大場勝行
    • Organizer
      第57回質量分析総合討論会
    • Place of Presentation
      大阪
    • Year and Date
      20090000
  • [Presentation] Is grain growth in polar ice sheets normal grain growth-Differences between ice core studies and laboratory experiments2008

    • Author(s)
      Azuma, N.
    • Organizer
      ESF Exploratory Workshop, Modeling and Interpretation of Ice Microstructures
    • Place of Presentation
      Goettingen, Germany
    • Year and Date
      20080000
  • [Presentation] 極地氷床氷のレオロジー2008

    • Author(s)
      東信彦
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      幕張
    • Year and Date
      20080000
  • [Presentation] Mechanical properties of dust and ice mixtures expected in the Martian polar caps and permafrost2007

    • Author(s)
      N. Azuma, Y. Ohba, T. Maeda and T. Ishii
    • Organizer
      European Geosciences Union general assembly
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      20070000
  • [Presentation] レーザー干渉測長法による氷の微小変位計測技術の開発 III2007

    • Author(s)
      大庭泰治, 明田川正人, 木暮貴博, 菅原亮太, 安濃一樹, 石下雅史, 高田守昌, 東信彦
    • Organizer
      2007年度日本雪氷学会全国大会講演予稿集
    • Place of Presentation
      富山(55)
    • Year and Date
      20070000
  • [Presentation] Effect of impurities on grain growth of ice2006

    • Author(s)
      N. Azuma, K. Nishimura, S. Yokoyama and M. Takata
    • Organizer
      11th International Conference on the Physics and Chemistry of Ice
    • Place of Presentation
      Bremerhaven, Germany
    • Year and Date
      20060000
  • [Presentation] Optical Scattering Analysis of Dome Fuji Ice Core, Antarctica. European Geosciences Union general Optical Scattering Analysis of Dome Fuji Ice Core, Antarctica2006

    • Author(s)
      M. Takata, T. Hondoh, Y. Fujii, N. Azuma
    • Organizer
      European Geosciences Union general assembly
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      20060000
  • [Presentation] 極地氷床氷の歪速度の精密干渉計による計測(第1報 : 装置の基本構想と常温での性能確認)2006

    • Author(s)
      明田川正人, 高田守昌, 東信彦, 安濃一樹, 木暮貴博
    • Organizer
      2006年度精密工学会春季大会学術講演会講演予稿集
    • Place of Presentation
      東京理科大学野田校舎(N06)
    • Year and Date
      20060000

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Published: 2010-06-10   Modified: 2016-04-21  

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