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2011 Fiscal Year Final Research Report

Mechanism of dike growth within a mechanically-heterogeneous host rock

Research Project

  • PDF
Project/Area Number 21710182
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Natural disaster science
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

GESHI Nobuo  独立行政法人産業技術総合研究所, 地質情報研究部門, 主任研究員 (70356955)

Project Period (FY) 2009 – 2011
Keywords火山 / 噴火 / マグマ / 噴火推移予測
Research Abstract

The shapes of dikes intruding the layered host rock of Miyakejima and Reunion Island are examined by the field observations. Structural difference between feeder and non-feeder dikes are revealed. Numerical FEM simulations indicate that the variation of dike thickness observed in Miyakejima and Piton de la Fournaise can be broadly explained in terms of layer-stiffness differences of one or two orders of magnitude. Based on the results, the effects of the dike propagation process controlled by the host rock structure on the location and process of fissure eruptions are evaluated.

  • Research Products

    (6 results)

All 2012 2011 2010

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (2 results)

  • [Journal Article] From structure-to erosion-controlled subsiding calderas : evidence thresholds and mechanics2012

    • Author(s)
      Geshi N.、Acocella V.、Ruch J.
    • Journal Title

      Bulletin of Volcanology.

      Volume: (印刷中)

    • DOI

      doi:10.1007/s00445-012-0617-x

    • Peer Reviewed
  • [Journal Article] Effects of mechanical layering of host rocks on dike growth and arrest2012

    • Author(s)
      Geshi N.、Kusumoto S.、Gudmundsson A.
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 223-224 Pages: 74-82

    • DOI

      doi:10.1016/j.jvolgeores.2012.02.004

    • Peer Reviewed
  • [Journal Article] Growth of phreatomagmatic explosion craters : a model inferred from Suoana crater in Miyakejma Volcano、Japan2011

    • Author(s)
      Geshi N.、Nemeth K.、Oikawa T.
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 201 Pages: 30-38

    • DOI

      doi:10.1016/j.jvolgeores.2010.11.012

    • Peer Reviewed
  • [Journal Article] Geometric difference between non-feeder and feeder dikes2010

    • Author(s)
      Geshi N.、Kusumoto S.、Gudmundsson A.
    • Journal Title

      Geology

      Volume: 38 Pages: 195-198

    • DOI

      doi:10.1130/G30350.1

    • Peer Reviewed
  • [Presentation] 母岩物性の不均質を反映したダイクの発達過程2010

    • Author(s)
      下司信夫、楠本成寿、A.ガドマドソン
    • Organizer
      日本地球惑星科学連合2010年大会幕張メッセ国際会議場
    • Place of Presentation
      千葉県千葉市
    • Year and Date
      2010-05-23
  • [Presentation] Dike thickness controlled by the layering of the host rock2010

    • Author(s)
      Nobuo Geshi、Shigekazu Kusumoto、Agust Gudmundsson、Agust Gudmundsson
    • Organizer
      European Geosciences Union General Assembly 2010
    • Place of Presentation
      Austria Center Vienna
    • Year and Date
      2010-05-05

URL: 

Published: 2013-07-31  

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