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Mechanism and the eruption process of rhyolitic phreatomagmatic explosions

Research Project

Project/Area Number 16K05576
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Geology
Research InstitutionKobe University

Principal Investigator

Suzuki-Kamata Keiko  神戸大学, 海洋底探査センター, 教授 (20192544)

Co-Investigator(Kenkyū-buntansha) 山崎 和仁  神戸大学, 理学研究科, 講師 (20335417)
巽 好幸  神戸大学, 海洋底探査センター, 教授 (40171722)
中岡 礼奈  神戸大学, 海洋底探査センター, 特命助教 (40756673)
鹿野 和彦  鹿児島大学, その他部局等, 教授 (40356811)
Research Collaborator KANO Kazuhiko  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsマグマ水蒸気噴火 / 神津島天上山火山 / 姫島火山群 / スパイラクル / 伊豆諸島新島 / 段階熱消磁実験 / マグマ水蒸気爆発
Outline of Final Research Achievements

Mode of the rhyolitic phreatomagmatic eruptions in the different environment were researched at Mukaeyama volcano in Niijima Island, Tenjosan volcano in Kozusima Island and Hime-shima Island. Eruptive vent was located at the shallow sea area at Mukaeyama volcano in Niijima, shore area at Tenjosan volcano in Kozusima, and wet environment like a alluvial fan at Hime-shima. The amount of pyroclastics is correlated with the depth of vent location, deeper vent occurs the pyroclastics predominated eruption, and the shallower vent occur the lava predominated eruption. Phreatomagmatic eruptions can occur when high pressure fluids fracture and flow into magma and make contact with molten magma. Even if the direct contact of molten magma and water cannot occur, phreatomagmatic eruption of destruction of phase-equilibrium type may arise when the vapor reservoir with the equilibrium between vapor and water in the brecciated part of magma can form.

Academic Significance and Societal Importance of the Research Achievements

珪長質マグマのマグマ水蒸気噴火の典型的事例として,発生環境の異なる向山火山(東京都新島),姫島火山群(大分県姫島),天上山火山(東京都神津島)の流紋岩質火砕堆積物を取り上げた. 現地調査と試料分析で得られるデータに基づいて,噴火機構と火砕密度流の流動定置機構を検討した結果、それぞれの事例に共通するマグマ水蒸気噴火噴出物の特徴が火口の水深と深く関わることが明らかになった.日本には流紋岩質マグマをはじめとする珪長質マグマを噴出する火山島が多く存在するため、それらの地域の将来の噴火様式を予測する上に火山防災にも役立つような情報を提供することが出来た。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (24 results)

All 2018 2017 2016

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (19 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Formation Process of Lava Domes in Sanbe Volcano2018

    • Author(s)
      浅野一平、五井健登、清杉孝司、鈴木桂子、巽 好幸
    • Journal Title

      BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN

      Volume: 63 Issue: 2 Pages: 19-32

    • DOI

      10.18940/kazan.63.2_19

    • NAID

      130007403445

    • ISSN
      0453-4360, 2189-7182
    • Year and Date
      2018-06-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The origin of a coarse lithic breccia in the 34ka caldera-forming Sounkyo eruption, Taisetsu volcano group, central Hokkaido, Japan2018

    • Author(s)
      Yasuda,Y. and Suzuki-Kamata, K.
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 357 Pages: 287-305

    • DOI

      10.1016/j.jvolgeores.2018.04.017

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan2018

    • Author(s)
      Yoshiyuki Tatsumi, Keiko Suzuki-Kamata, Tetsuo Matsuno, Hiroshi Ichihara, Nobukazu Seama, Koji Kiyosugi, Reina Nakaoka, Kazuo Nakahigashi, Hideaki Takizawa, Kazuki Hayashi, Tatsuro Chiba, Satoshi Shimizu, Mamoru Sano, Hikaru Iwamaru
    • Journal Title

      Scientific Reports

      Volume: 2753 Issue: 1

    • DOI

      10.1038/s41598-018-21066-w

    • NAID

      120006394637

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The origin of a coarse lithic breccia in the 34 ka caldera-forming Sounkyo eruption, Taisetsu volcano group, central Hokkaido, Japan2018

    • Author(s)
      Y. Yasuda and K. Suzuki-Kamata
    • Journal Title

      J. Volcanol. Geotherm. Res.

      Volume: 357

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] The significance of the surface excavation in the Kikai caldera, southern Kyushu2018

    • Author(s)
      Keiko Suzuki-Kamata; Yoshiyuki Tatsusmi; Kouji Kiyosugi; Reina Nakaoka; Nobukazu Seama; Tetsuo Matsuno; Satoshi Shimizu; Mamoru Sano; Hikaru Iwamaru
    • Organizer
      Japan Geoscience Union Meeting 2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] The origin of a coarse lithic breccia and its implication for the formation of small calderas2018

    • Author(s)
      Yuki Yasuda; Keiko Suzuki-Kamata
    • Organizer
      日本惑星地球科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Integrated marine investigations of Kikai Caldera, SW Japan2018

    • Author(s)
      松野 哲男; 巽 好幸; 島 伸和; 鈴木 桂子; 市原 寛; 清杉 孝司; 中岡 礼奈; 清水 賢; 佐野 守; 井和丸 光; 両角 春寿; 杉岡 裕子; 中東 和夫; 山本 揚二朗; 林 和輝; 西村 公宏; 古川 優和; 堀内 美咲; 仲田 大地; 中村 崚登; 廣瀬 時; 瀬戸 康友; 大重 厚博; 滝沢 秀明; 千葉 達朗; 小平 秀一
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 破局的カルデラ形成噴火に対する地殻由来マグマの寄与-姶良火砕噴火で噴出した本質岩片における地球化学的特徴からの推定-2018

    • Author(s)
      西原 歩; 巽 好幸; 鈴木 桂子; 金子 克哉; 木村 純一; 常 青; 日向 宏伸
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Generation of voluminous felsic magma in 7.3ka Kikai-Akahoya eruption2018

    • Author(s)
      西村 公宏; 巽 好幸; 鈴木 桂子; 木村 純一; 常 青; 清杉 孝司; 中岡 礼奈; 林 和輝
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Depositional structure and emplacement temperature of the coarse-grain facies of Ata pyroclastic flow deposit2018

    • Author(s)
      里和 玲伊; 鈴木 桂子; 中岡 礼奈
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 伊豆諸島新島西暦886年向山火山の噴火推移と外来水の影響2018

    • Author(s)
      中岡 礼奈; 鈴木 桂子; 鹿野 和彦
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 火山ガラス組成から見る幸屋火砕流堆積物の流動様式の推移2018

    • Author(s)
      中岡 礼奈; 鈴木 桂子
    • Organizer
      日本火山学会2018 年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] カルデラ火山と巨大噴火2018

    • Author(s)
      鈴木 桂子
    • Organizer
      原子力学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 海の存在が幸屋火砕流の流動・堆積機構に与えた影響: 種子島に分布する堆積物に基づく考察2017

    • Author(s)
      山根 朋巳, 鈴木 桂子
    • Organizer
      日本地球惑星科学連合
    • Related Report
      2017 Research-status Report
  • [Presentation] 浅間火山火砕噴出物の含水量と水和2017

    • Author(s)
      小島 圭, 佐藤 博明, 鈴木 桂子, 佐藤 鋭一
    • Organizer
      日本地球惑星科学連合
    • Related Report
      2017 Research-status Report
  • [Presentation] 小型カルデラの陥没メカニズム:大雪山御鉢平カルデラの例2017

    • Author(s)
      安田 裕紀, 鈴木 桂子
    • Organizer
      日本地球惑星科学連合
    • Related Report
      2017 Research-status Report
  • [Presentation] 伊豆諸島新島、大峯火砕丘の形成過程2017

    • Author(s)
      中岡 礼奈, 鹿野 和彦, 鈴木 桂子
    • Organizer
      日本地球惑星科学連合
    • Related Report
      2017 Research-status Report
  • [Presentation] Collapse mechanism of small calderas: a case study of the Ohachidaira caldera, Hokkaido, Japan2017

    • Author(s)
      Yuki Yasuda, Keiko Suzuki-Kamata
    • Organizer
      IAVCEI
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cone-building process in the A.D. 886 eruption on the Niijima Island, Japan2017

    • Author(s)
      Reina Nakaoka, Kazuhiko Kano, Keiko Suzuki-Kamata
    • Organizer
      IAVCEI
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 幸屋火砕流の流動・堆積機構と給源カルデラ2017

    • Author(s)
      鈴木 桂子, 山根 朋己, 中岡 礼奈, 竹内 英彦
    • Organizer
      日本地質学会
    • Related Report
      2017 Research-status Report
  • [Presentation] The Ohachidaira caldera-forming eruption, Taisetsu volcano group, Hokkaido, Japan.2016

    • Author(s)
      Yasuda, Y, and Suzuki-Kamata, K.
    • Organizer
      The 6th Workshop on Collapse Caldera
    • Place of Presentation
      Hotel Yumoto-meisuitei (Hokkaido・Date)
    • Year and Date
      2016-09-04
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Ohachidaira caldera-forming eruption and associated deposits, Taisetsu volcano group, Japan.2016

    • Author(s)
      Yuki Yasuda, Keiko Suzuki-Kamata
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2016-05-22
    • Related Report
      2016 Research-status Report
  • [Presentation] 池田火砕流堆積物の基盤地形による岩相変化2016

    • Author(s)
      山本 望; 鈴木 桂子
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2016-05-22
    • Related Report
      2016 Research-status Report
  • [Book] 日本の火山ウォーキングガイド2016

    • Author(s)
      特定非営利活動法人火山防災推進機構(編)
    • Total Pages
      192
    • Publisher
      丸善出版(株)
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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