2017 Fiscal Year Final Research Report
Mechanism of pyroclastic flow at Sakurajima volcano
| Project/Area Number |
26350476
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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 |
Natural disaster / Disaster prevention science
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 桜島火山 / 火砕流 |
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| Outline of Final Research Achievements |
Eruptions at the Sakurajima volcano's Showa crater become active and are sometimes accompanied with small pyroclastic flows. It is important to understand the mechanism of generation of the pyroclastic flow for volcanic disaster prevention. We research patterns of inflation/deflation, precursory earthquakes, and air-shock of the eruptions accompanied with the pyroclastic flow.
In the case of occurrence of pyroclastic flow, ascent magma is longer stay in conduit and too much volcanic ejecta than normal eruption. The possibility of occurrence of the pyoroclasti flow is high when obserbed swarm of precursory earthquakes and suspension of inflation during eruptive stage in long term.
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| Free Research Field |
火山物理学
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