Volcano sector collapse: Effect on its magmatic plumbing and eruption style
| Project/Area Number |
17K05686
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Ishizuka Osamu 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 主任研究員 (90356444)
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| Co-Investigator(Kenkyū-buntansha) |
片岡 香子 新潟大学, 災害・復興科学研究所, 准教授 (00378548)
前野 深 東京大学, 地震研究所, 准教授 (20444078)
田村 芳彦 国立研究開発法人海洋研究開発機構, 海域地震火山部門, 専門部長 (40293336)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 山体崩壊 / マグマ化学組成 / ペレ火山 / 浅間山火山 / 渡島大島火山 / 浅間山 / 島弧火山 / コア / マグマ組成 |
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| Outline of Final Research Achievements |
Loading and unloading of the lithosphere in volcanic settings affects the dynamics of magma generation, storage and eruption. It is critical to improve our understanding of the feedback mechanisms between change in external force to the volcanoes and eruptive activity in order to interpret past volcanic histories and prepare for future hazards at active volcanoes. The purpose of this study is to investigate how the behaviour of magmatic systems is affected by sector collapse of the volcanoes.
We investigated geochemical composition as well as radiogenic isotope composition of recent volcanic products of Mt. Pelee, Asamayama and Oshimaoshima volcanoes especially focused the period including large-scale flank collapse. Our study for the first time has revealed systematic temporal geochemical variation of magma of each volcano, which could have possible causal link to the large-scale flank collapse.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，火山体の崩壊を繰り返す活動的な火山において，山体の崩壊がその火山のマグマ供給系にどのような影響を及ぼすのか，を高時間分解能で明らかにした．これにより火山体の崩壊イベントに直接関連した変化を正確に抽出，その特徴と変化の原因は何か，解明への糸口がつけられた．国内外の大規模山体崩壊を起こす火山との比較，研究により，火山体崩壊のマグマ，噴火活動に関する理解，それに基づく近い将来の火山活動の推移予測，噴火発生時の噴火推移予測が飛躍的に進み，その高度化に大きく貢献できると考える.
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Report
(4 results)
Research Products
(62 results)
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[Journal Article] Isotopic characteristics of Neogene‐Quaternary tephra from IODP Site U1438: A record of explosive volcanic activity in the Kyushu‐Ryukyu arc2019
Author(s)
McCarthy, A., Yogodzinski, G., Tepley, F. J., III, Bizimis, M., Arculus, R., Ishizuka, O.
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Journal Title
Geochemistry, Geophysics, Geosystems
Volume: 20
Issue: 5
Pages: 2318-2333
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Age of Izu-Bonin-Mariana arc basement2018
Author(s)
Ishizuka Osamu、Hickey-Vargas Rosemary、Arculus Richard J.、Yogodzinski Gene M.、Savov Ivan P.、Kusano Yuki、McCarthy Anders、Brandl Philipp A.、Sudo Masafumi
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Journal Title
Earth and Planetary Science Letters
Volume: 481
Pages: 80-90
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Temporal geochemical variation of Mt. Pelee magma -link to flank collapse?-2019
Author(s)
Ishizuka, O., Villemant, B., Caron, B., Maeno, F., Le Friant, A., Kataoka, K.S.
Organizer
ANR-CARIB
Related Report
Int'l Joint Research / Invited
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[Presentation] Initiation and maturation of island arcs2019
Author(s)
Ribeiro, J., Ishizuka, O., Lee, C-T. A. Martinez, F., Girard, G., Ohara, Y.
Organizer
Goldschmidt 2019
Related Report
Int'l Joint Research
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[Presentation] Tectonic setting leading to subduction initiation of Izu-Bonin-Mariana arc -new implications from the Philippine Sea basins-2018
Author(s)
Ishizuka Osamu, Tani Kenichiro, Harigane Yumiko, Shimoda Gen, Sato Taichi, Umino Susumu, Sakamoto Izumi, Ohara Yasuhiko, Yokoyama Yuka, Perez Americus, Conway Edward Christopher, Sekimoto Shun
Organizer
AGU fall meeting
Related Report
Int'l Joint Research
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[Presentation] Tectonic and Magmatic Evolution at Subduction Initiation- the Case of Izu-Bonin- Mariana-2017
Author(s)
Ishizuka, O., Tani,K., Harigane, Y., Hickey-Vargas, R., Yogodzinski, G.M., Kusano,Y., Savov, I.P., Arculus, R.J., Reagan, M.K., Stern, R.J.
Organizer
Goldschmidt 2017
Related Report
Int'l Joint Research / Invited
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[Presentation] Emplacement of lava flows in the sea and creation of a new volcanic island at Nishinoshima, Ogasawara, Japan, revealed from first landing and survey2017
Author(s)
Maeno, F., Nakano, S., Yoshimoto, M., Ohminato, T., Watanabe, A., Yasuda, A., Kaneko, T., Nakada, S., Takeo, M
Organizer
IAVCEI 2017 Scientific Assembly
Related Report
Int'l Joint Research
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