2015 Fiscal Year Final Research Report
Investigation of volcanic gas accumulation mechanism prior to Vulcanian explosion at Sakurajima volcano, Japan
| Project/Area Number |
26800241
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
KAZAHAYA Ryunosuke 国立研究開発法人産業技術総合研究所, 活断層・火山研究部門, 研究員 (50637379)
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| Research Collaborator |
SHINOHARA Hiroshi 独立行政法人産業技術総合研究所, 活断層・火山研究部門, 首席研究員 (80357194)
IGUCHI Masato 京都大学, 防災研究所, 教授 (60144391)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 火山学 / 火山ガス / 噴火活動推移予測 / ブルカノ式噴火 / 噴火準備過程 |
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| Outline of Final Research Achievements |
Volcanic gas observations were conducted to quantify the variation of volcanic gas flux prior to Vulcanian explosions. We analyzed the volcanic gas and geodetic data, and found a positive relationship between the decrease in the volcanic gas flux and increases in strain records. These results suggest that the inflations before the explosion were caused by a gas accumulation. We proposed the model of the Vulcanian explosions by sealing of the conduit and the gas accumulation.
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| Free Research Field |
火山学
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