Fluvial response to an eruption: geomorphology and sedimentology of caldera lake breakouts and rain-triggered lahars
Project/Area Number |
24710200
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Natural disaster science
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Research Institution | Niigata University |
Principal Investigator |
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Keywords | ラハール / 洪水 / 地中レーダ / カルデラ / ダム湖 / 火山泥流 / 火山防災 / 土砂災害 / 火山 |
Outline of Final Research Achievements |
Lahars derived from caldera volcanoes tend to be large and hazardous. Sedimentary architectures, depositional patterns, and bedforms of the lahar deposits, therefore, are important to understand properties, processes and mechanisms of large-scale hazardous flows. The present study carried out a Ground Penetrating Radar (GPR) survey on lahar deposits with approaching from geomorphological and sedimentological analysis. The results shows that 1) the GPR survey successfully obtained GPR images even with the complicated grainsize distribution and component in the lahar deposits, and 2) volcanic breakout flood deposits caused by large water discharge and rain-triggered lahar deposits can be differentiated by patterns in GPR images.
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Report
(4 results)
Research Products
(34 results)
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[Journal Article] Luminescence dating of scoria fall and lahar deposits from Somma-Vesuvius, Italy2014
Author(s)
Tsukamoto, S., Kataoka, K.S., Oguchi, T., Murray, A.S., and Komatsu, G.
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Journal Title
Quaternary Geochronology
Volume: 20
Pages: 39-50
DOI
Related Report
Peer Reviewed
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[Presentation] Geomorphology and sedimentary features, and temporal component-change of lahar deposits at the northern foot of Chokai volcano, NE Japan.2014
Author(s)
Minami, Y., Ohba, T., Hayashi, S. and Kataoka, K.S.
Organizer
AGU Fall Meeting, San Francisco
Place of Presentation
Moscone Center(San Francisco, USA)
Year and Date
2014-12-15 – 2014-12-19
Related Report
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