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Combined model of conduit flow and eruption cloud for prediction of transition of eruption style

Research Project

Project/Area Number 21340123
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

KOYAGUCHI Takehiro  東京大学, 地震研究所, 教授 (80178384)

Co-Investigator(Renkei-kenkyūsha) SUZUKI Yujiro  東京大学, 地震研究所, 助教 (30392939)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2011: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2010: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords火山現象 / 火山 / 流体 / 計算物理 / 噴火推移予測 / 減災 / 火山物理 / マグマ上昇 / 数値計算 / 火山噴煙
Research Abstract

We have developed a 1-dimensional(1D) 2-phase conduit flow model and analyzed the stability of steady lava dome eruptions. Through this analysis, we have revealed the transition conditions from lava dome eruptions to explosive eruptions in response to pressure change at magma chamber. We have also investigated how the eruption conditions(pressure and velocity) at the vent depend on the crater shape during explosive eruptions on the basis of the quasi-1D conduit flow model. These results of eruption conditions at the vent based on the quasi-1D conduit flow model have been used as the vent conditions for the 3-dimensional eruption cloud model. As a result we have succeeded in predicting the condition for pyroclastic flow to generate(i. e., column collapse condition) during explosive eruptions.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (54 results)

All 2012 2011 2010 2009

All Journal Article (14 results) (of which Peer Reviewed: 10 results) Presentation (40 results)

  • [Journal Article] 3-D numerical simulations of eruption column collapse : Effects of vent size on pressure-balanced jet/plumes2012

    • Author(s)
      Y. J. Suzuki and T. Koyaguchi
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: vol.221-222 Pages: 1-13

    • DOI

      10.1016/j.jvolgeores.2012.01.013

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] 火山噴火のダイナミクス2011

    • Author(s)
      小屋口剛博・鈴木雄治郎・小園誠史
    • Journal Title

      ながれ

      Volume: vol.30 Pages: 317-324

    • NAID

      110008722921

    • Related Report
      2011 Final Research Report
  • [Journal Article] 火山噴火のダイナミクス2011

    • Author(s)
      小屋口剛博, 鈴木雄治郎, 小園誠史
    • Journal Title

      ながれ

      Volume: 30 Pages: 317-324

    • NAID

      110008722921

    • Related Report
      2011 Annual Research Report
  • [Journal Article] Effects of the crater on eruption column dynamics2010

    • Author(s)
      T. Koyaguchi, Y. J. Suzuki and T. Kozono
    • Journal Title

      Journal of Geophysical Research

      Volume: vol.115 Issue: B7

    • DOI

      10.1029/2009jb007146

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Numerical determination of the efficiency of entrainment in volcanic eruption columns2010

    • Author(s)
      Y. J. Suzuki and T. Koyaguchi
    • Journal Title

      Geophysical Research Letters

      Volume: vol.37 Issue: 5

    • DOI

      10.1029/2009gl042159

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] A simple formula for calculating porosity of magma in volcanic conduits during dome-forming eruptions2010

    • Author(s)
      T. Kozono and T. Koyaguchi
    • Journal Title

      Earth Planets Space

      Volume: 62 Pages: 483-488

    • NAID

      10029016714

    • URL

      http://www.terrapub.co.jp/journals/EPS/pdf/free/2010/62050483.pdf

    • Related Report
      2011 Final Research Report 2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ミューオグラフィーにおける巨大物体の密度分布可視化およびその火山噴火における火道内気液二相流解析への応用2010

    • Author(s)
      小園誠史・田中宏幸・小屋口剛博
    • Journal Title

      混相流体力学会誌

      Volume: vol.24, No.1 Pages: 45-56

    • URL

      http://ci.nii.ac.jp/naid/1002613106

    • Related Report
      2011 Final Research Report
  • [Journal Article] Numerical determination of the efficiency of entrainment in volcaniceruption columns2010

    • Author(s)
      Y.J.Suzuki, T.Koyaguchi
    • Journal Title

      Geophysical Research Letters

      Volume: 37

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of the crater on eruption column dynamics2010

    • Author(s)
      T.Koyaguchi, Y.J.Suzuki, T.Kozono
    • Journal Title

      Journal of Geophysical Research

      Volume: 115

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ミューオグラフィーにおける巨大物体の密度分布可視化およびその火山噴火における火道内気液二相流解析への応用2010

    • Author(s)
      小園誠史・田中宏幸・握言剛博
    • Journal Title

      混相流体力学会誌

      Volume: 24 Pages: 45-56

    • Related Report
      2010 Annual Research Report
  • [Journal Article] A three-dimensional numerical simulation of spreading umbrella clouds2009

    • Author(s)
      Y.J.Suzuki, T.Koyaguchi
    • Journal Title

      Journal of Geophysical Research

      Volume: 114

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The effect of intensity of turbulence in umbrella cloud on tephra Dispersion during explosive volcanic eruptions : Experimental and numerical approaches.2009

    • Author(s)
      T.Koyaguchi, K.Ochiai, Y.J.Suzuki
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 186

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of relative motion between gas and liquid on 1-dimensional steady flow in silicic volcanic conduits : 1. An analytical method2009

    • Author(s)
      T.Kozono, T.Koyaguchi
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 180 Pages: 21-36

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of relative motion between gas and liquid on 1-dimensional steady flow in silicic volcanic conduits : 2. Origin of diversity of eruption styles2009

    • Author(s)
      T.Kozono, T.Koyaguchi
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 180 Pages: 37-49

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 脱ガスと結晶化が溶岩ドームから爆発的噴火への遷移過程に与える影響2012

    • Author(s)
      小園誠史・小屋口剛博
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2012-05-20
    • Related Report
      2011 Final Research Report
  • [Presentation] 火道・噴煙統合モデルの構築に向けて(その4) 3次元数値計算による噴煙の内部構造の解析2012

    • Author(s)
      小屋口剛博・鈴木雄治郎
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2012-05-20
    • Related Report
      2011 Final Research Report
  • [Presentation] 火山噴煙の3次元数値シミュレーション:周囲の風が噴煙高度に与える影響2012

    • Author(s)
      鈴木雄治郎・小屋口剛博
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2012-05-20
    • Related Report
      2011 Final Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds : Effects of the environmental wind on the turbulent mixing2011

    • Author(s)
      Y. J. Suzuki, and T. Koyaguchi
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2011-12-08
    • Related Report
      2011 Final Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds: Effects of the environmental wind on the turbulent mixing2011

    • Author(s)
      Suzuki, Y.J., T.Koyaguchi
    • Organizer
      AGU Fall Meeting
    • Place of Presentation
      San Francisco, USA(招待講演)
    • Year and Date
      2011-12-08
    • Related Report
      2011 Annual Research Report
  • [Presentation] 霧島山新燃岳における火山噴煙のPIV解析2011

    • Author(s)
      小園誠史・瀧本浩史・鵜川元雄・藤田英輔・實渕哲也・小屋口剛博・石峯康浩
    • Organizer
      日本火山学会2011年秋季大会
    • Place of Presentation
      北海道旭川市(大雪クリスタルホール)
    • Year and Date
      2011-10-02
    • Related Report
      2011 Annual Research Report
  • [Presentation] Effects of lateral gas escape on transitions from lava dome eruptions to explosive eruptions2011

    • Author(s)
      T. Kozono and T. Koyaguchi
    • Organizer
      International Union of Geodesy and Geophysics General Assembly
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2011-07-06
    • Related Report
      2011 Final Research Report
  • [Presentation] Effects of lateral gas escape on transitions from lava dome eruptions to explosive eruptions2011

    • Author(s)
      T.Kozono, T.Koyaguchi
    • Organizer
      IUGG General Assembly
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2011-07-06
    • Related Report
      2011 Annual Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds : The critical condition for column collapse2011

    • Author(s)
      Y. J. Suzuki and T. Koyaguchi
    • Organizer
      International Union of Geodesy and Geophysics sGeneral Assembly
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2011-07-05
    • Related Report
      2011 Final Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds : The critical condition for column collapse2011

    • Author(s)
      Suzuki, Y.J., T.Koyaguchi
    • Organizer
      IUGG General Assembly
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2011-07-05
    • Related Report
      2011 Annual Research Report
  • [Presentation] 火道・噴煙統合モデルの構築に向けて(その3) 3次元噴煙モデルによる数値シミュレーション2011

    • Author(s)
      小屋口剛博・鈴木雄治郎
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2011-05-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 3次元数値シミュレーションによる噴煙柱崩壊条件の解析2011

    • Author(s)
      鈴木雄治郎・小屋口剛博
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2011-05-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 横方向脱ガスが溶岩ドーム噴火から爆発的噴火への遷移過程に与える効果2011

    • Author(s)
      小園誠史・小屋口剛博
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2011-05-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 3次元数値シミュレーションによる噴煙柱崩壊条件の解析2011

    • Author(s)
      鈴木雄治郎・小屋口剛博
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] 火道・噴煙統合モデルの構築に向けて(その3)3次元噴煙モデルによる数値シミュレーション2011

    • Author(s)
      小屋口剛博・鈴木雄治郎
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] 横方向脱ガスが溶岩ドーム噴火から爆発的噴火への遷移過程に与える効果2011

    • Author(s)
      小園誠史・小屋口剛博
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] 霧島山新燃岳の噴煙放出における噴出条件と噴煙高度の関係2011

    • Author(s)
      鈴木雄治郎・小屋口剛博・武尾実・大湊隆雄・市原美恵・中田節也・鈴木由希・金子隆之
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 新燃岳における衝撃波伝播の数値計算2011

    • Author(s)
      畠中和明・安田章悟・齋藤務・市原美恵・鈴木雄治郎・小屋口剛博
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 傾斜変動データに基づく2011年新燃岳噴火におけるマグマ噴出率の見積もり2011

    • Author(s)
      小園誠史・上田英樹・小澤拓・小屋口剛博・藤田英輔・鵜川元雄・棚田俊收
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉市(幕張メッセ)
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] Effects of gas exsolution and microlite crystallization on the complexity of conduit flow dynamics during lava dome eruptions2010

    • Author(s)
      T. Koyaguchi, and T. Kozono
    • Organizer
      American Geophysical Union Fall meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-16
    • Related Report
      2011 Final Research Report
  • [Presentation] Effects of gas exsolution and microlite crystallization on the complexity of conduit flow dynamics2010

    • Author(s)
      T.Koyaguchi, T.Kozono
    • Organizer
      AGU 2010 Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Coupling gravity current and advection-diffusion models in tephrasedimentation analysis2010

    • Author(s)
      A.C.M.Volentik, T.Koyaguchi, Y.J.Suzuki, B.F.Houghton
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Coupled effects of vertical and lateral gas escapes on conduit flow dynamics and chemistry of volcanic gas during lava dome eruptions2010

    • Author(s)
      T. Kozono, and T. Koyaguchi
    • Organizer
      American Geophysical Union Fall meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-15
    • Related Report
      2011 Final Research Report
  • [Presentation] Coupled effects of vertical and lateral gas escapes on conduit flow dynamics and chemistry of volcanic gas during lava dome eruptions2010

    • Author(s)
      T.Kozono, T.Koyaguchi
    • Organizer
      AGU 2010 Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Effects of vertical and lateral gas escapes on volatile compositions, magma porosity and pressure in volcanic conduits during dome-forming eruptions2010

    • Author(s)
      T. Kozono and T. Koyaguchi
    • Organizer
      City on Volcanoes 6th meeting
    • Place of Presentation
      Tenerife, Spain
    • Year and Date
      2010-05-31
    • Related Report
      2011 Final Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds : flow regimes at the column collapse condition2010

    • Author(s)
      Y. J. Suzuki and T. Koyaguchi
    • Organizer
      City on Volcanoes 6th meeting
    • Place of Presentation
      Tenerife, Spain
    • Year and Date
      2010-05-31
    • Related Report
      2011 Final Research Report
  • [Presentation] 3-D numerical simulations of eruption clouds : flow regimes at the column collapse condition2010

    • Author(s)
      Y.J.Suzuki, T.Koyaguchi
    • Organizer
      Cities on Volnocanoes 6^<th>
    • Place of Presentation
      Tenerife, Spain
    • Year and Date
      2010-05-31
    • Related Report
      2010 Annual Research Report
  • [Presentation] 縦方向・横方向の脱ガス過程が溶岩ドーム噴火における火道内の揮発成分組成・マグマ空隙率・圧力の分布に与える効果2010

    • Author(s)
      小園誠史・小屋口剛博
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2010-05-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 縦方向・横方向の脱ガス過程が溶岩ドーム噴火における火道内の揮発成分組成・マグマ空隙率・圧力の分布に与える効果2010

    • Author(s)
      小園誠史, 小屋口剛博
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ・千葉
    • Year and Date
      2010-05-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] Compaction of silicic gas-rich magma during lava dome eruptions2010

    • Author(s)
      T. Koyaguchi and T. Kozono
    • Organizer
      European Geosciences Union General Assembly
    • Place of Presentation
      Viena, Austria
    • Year and Date
      2010-05-04
    • Related Report
      2011 Final Research Report
  • [Presentation] Compaction of silicic gas-rich magma during lava domeeruptions2010

    • Author(s)
      T.Koyaguchi, T.Kozono
    • Organizer
      EGU General Assembly 2010
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      2010-05-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] Numerical determination of the efficiency of entrainment in volcanic eruption columns2009

    • Author(s)
      Y. J. Suzuki and T. Koyaguchi
    • Organizer
      American Geophysical Union Fall meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2009-12-16
    • Related Report
      2011 Final Research Report
  • [Presentation] Numerical determination of the efficiency of entrainment in volcanic eruption columns2009

    • Author(s)
      Y.J.Suzuki, T.Koyaguchi
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2009-12-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] The diversity of flow pattern during eruption column collapse2009

    • Author(s)
      T. Koyaguchi, Y. J. Suzuki and T. Kozono
    • Organizer
      IAVCEI Commission on Explosive Volcanism Workshop
    • Place of Presentation
      Clermont-Ferrand, France
    • Year and Date
      2009-10-27
    • Related Report
      2011 Final Research Report 2009 Annual Research Report
  • [Presentation] 縦方向脱ガスが溶岩ドーム噴火における火道中のマグマ空隙率分布に与える効果2009

    • Author(s)
      小園誠史・小屋口剛博
    • Organizer
      日本火山学会秋季大会
    • Place of Presentation
      神奈川県生命の星・地球博物館
    • Year and Date
      2009-10-11
    • Related Report
      2011 Final Research Report
  • [Presentation] High-Resolution 3-D Numerical Simulations of Volcanic Eruption Clouds2009

    • Author(s)
      T. Koyaguchi and Y. J. Suzuki
    • Organizer
      ASME Fluids Engineering Division Summer Meeting
    • Place of Presentation
      Vail, USA
    • Year and Date
      2009-08-05
    • Related Report
      2011 Final Research Report 2009 Annual Research Report
  • [Presentation] 薩摩硫苗島火山硫黄岳の火道浅部密度構造解析:3.火道流モデルに基づく解析2009

    • Author(s)
      小園誠史, 小屋口剛博, 田中宏幸, 平秀昭
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      幕張メシセ・千葉
    • Year and Date
      2009-05-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] 火道・噴煙統合モデルの構築に向けて(その2)火砕流の発生条件に対する火口形状の影響2009

    • Author(s)
      小屋口剛博, 小園誠史, 鈴木雄治郎
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      幕張メッセ・千葉
    • Year and Date
      2009-05-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] マグマの流量と粘性が溶岩ドーム噴火における火道中のマグマ空隙率変化に与える効果2009

    • Author(s)
      小園誠史, 小屋口剛博
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      幕張メッセ・千葉
    • Year and Date
      2009-05-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] 中規模火山噴煙の数値シミュレーション:噴煙の内部構造と乱流混合2009

    • Author(s)
      鈴木雄治郎, 小屋口剛博
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      幕張メッセ・千葉
    • Year and Date
      2009-05-17
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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