2013 Fiscal Year Final Research Report
Studies on diffuse emission of volcanic volatiles in a monogenetic volcano area
| Project/Area Number |
23540569
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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 |
Geochemistry/Astrochemistry
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| Research Institution | Shizuoka University |
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Principal Investigator |
NOTSU Kenji 静岡大学, 防災総合センター, 客員教授 (80101103)
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| Co-Investigator(Kenkyū-buntansha) |
FUJII Naoyuki 静岡大学, 防災総合センター, 客員教授 (60011631)
MORI Toshiya 東京大学, 大学院・理学系研究科, 准教授 (40272463)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 火山噴火予知 / 単成火山 / 伊豆東部火山群 / 手石海丘 / 大室山 / 火山ガス拡散放出 / マグマ揮発性物質 / 炭素同位体比 |
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| Research Abstract |
Magmatic volatiles are released not only as plume efflux from summit craters or flank fumaroles but also as diffuse efflux from whole surface of volcanic body. This work tried to monitor the behavior of magma beneath monogenetic volcanoes of the Izu-Tobu volcanoes by means of diffuse degassing of magmatic volatiles. From the bottom of the summit crater of the Teishi Knoll, formed at the 1989 submarine eruption, extremely trace amounts of magmatic-hydrothermal CO2 and CH4 were detected, by means of precise chemical and isotopic analyses of seawater collected just on the crater bottom. No diffuse degassing of magmatic CO2 was observed at the land area of epicenter regions of recent earthquake swarms nor at the fissure eruption region formed 2700 years before. At Oh-muro-yama scoria cone formed 4000 years before, CO2 efflux was slightly higher in the summit crater, the total efflux was (22+2) ton/day.
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Research Products
(24 results)
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[Journal Article] Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan2014
Author(s)
Notsu K., Sohrin R., Wada H., Tsuboi T., Sumino H., Mori T., Tsunogai U., Hernandez P.A., Suzuki Y., Ikuta R., Oorui K., Koyama M., Masuda T. and Fujii N
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Journal Title
Journal of Volcanology and Geothermal Research
Volume: 270
Pages: 90-98
DOI
Peer Reviewed
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[Journal Article] A magmatic source for fumaroles and diffuse degassing from the summit crater of Teide volcano (Teneriffe, Canary Islands): a geochemical evidence for the 2004-2005 seismic-volcanic crisis2012
Author(s)
Melian G., Tassi F., Pérez N., Hernández P., Sortino F., Vaselli O., Padron E., Nolasco D., Barrancos J., Padilla G., Rodriguez F., Dionis S., Calvo D., Notsu K. and Sumino H
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Journal Title
Bull. Volcanol
Volume: 74
Pages: 1465-1483
DOI
Peer Reviewed
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[Journal Article] Diffuse volcanic degassing and thermal energy release from Hengill volcanic system2012
Author(s)
Hernández P.A., Pérez N.M., Fridriksson T., Egbert J., Ilyinskaya E., Tharhallsson A., Ivarsson G., Gislason G., Gunnarsson I., Jonsson B., Padrón E., Melian G., Mori T. and Notsu K
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Journal Title
Iceland. Bull. Volcanol
Volume: 74
Pages: 2435-2448
DOI
Peer Reviewed
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[Journal Article] Global CO_2 emission from volcanic lakes2011
Author(s)
Perez N.M., Hernandez P.A., Padilla G., Nolasco D., Barrancos J., Melian G., Padron E., Dionis S., Calvo D., Rodriguez F., Notsu K., Mori T., Kusakabe M., Arpa M.C., Reniva P. and Ibarra M
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Journal Title
Geology
Volume: 39
Pages: 235-238
DOI
Peer Reviewed
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[Presentation] Volatile leakage from the crater bottom of Teishi Knoll of Izu-Tobu Volcanoes2013
Author(s)
Notsu K., Sohrin R., Wada H., Tsuboi T., Sumino H., Mori T., Tsunogai U., Hernandez P. A., Suzuki Y., Ikuta R., Oorui K., Koyama M., Masuda T. and Fujii N
Organizer
Japan, 23 years after the 1989 submarine eruption. IAVCEI 2013 Scientific Assembly
Place of Presentation
Kagoshima(Japan)
Year and Date
20130720-24
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[Presentation] Volatile leakage from the crater bottom of Teishi Knoll2012
Author(s)
Notsu K., Sohrin R., Wada H., Tsuboi T., Sumino H., Mori T., Tsunogai U., Hernandez P. A., Suzuki Y., Ikuta R., Oorui K., Koyama M., Masuda T. and Fujii N
Organizer
Japan, formed by a submarine eruption in 1989. 1st Anniversary International Conference Commemorating the 2011-2012 El Hierro Submarine Eruption
Place of Presentation
El Hierro, Canary Islands (Spain)
Year and Date
20121010-15
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