Relationship between spring water and slope failures occurred in a volcanic hillslope terrain under heavy rainfall
| Project/Area Number |
23651175
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
OGAWA Yasuhiro 独立行政法人森林総合研究所, 水土保全研究領域, 主任研究員 (50353628)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 火山災害 / 大規模崩壊 / 雲仙普賢岳 / 土石流 / 地下水湧出 / 崩壊 |
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| Research Abstract |
In order to clarify a relationship between spring water generated by heavy rainfall and large-scale collapse in the hillslope of post-eruption Unzen volcano, we took remote and close-up picture of spring water with a digital interval camera. A consequence was that severe gully erosion (2 or 5m in depth) at spring points occurred in the torrential rain of June 24, 2012. The observation result suggests slope stability of the volcano should be unstable under heavy rainfall.
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Report
(3 results)
Research Products
(3 results)
