2002 Fiscal Year Final Research Report Summary
Establishment of the scaling rule for explosive eruption and its application to the estimation of hazard distribution
| Project/Area Number |
13480117
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Natural disaster science
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
TANIGUCHI Hiromitsu Tohoku University, Center for Northeast Asian Studies, Professor, 東北アジア研究センター, 教授 (70125251)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAMOTO Tsuyoshi Tohoku University, Center for Northeast Asian Studies, Research Associate, 東北アジア研究センター, 助手 (90292309)
GOTO Akio Tohoku University, Center for Northeast Asian Studies, Research Associate, 東北アジア研究センター, 助手 (80312685)
NISHIMURA Takeshi Tohoku University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (40222187)
OSHIMA Hiromitsu Hokkaido University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (10213703)
HAYASHI Shintaro Akita University, Faculty of Education and Human Studies, Professor, 教育文化学部, 教授 (90180968)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Under water explosion experiment / Volcanic explosion / Scaling rule / Volcanic disaster / Hazard map / Explosion energy / Explosion depth / Hazard prediction |
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| Research Abstract |
This research work intends to establish the scaling rule that relates the explosion energy and depth of volcanic explosion to the extension and strength of volcanic disaster such as volcanic blast wave, pyroclastic surge and ballistic fragment.
For this purpose, we made some field explosion experiments under both of the conditions on the dry ground and in water. These two years we have concentrated on the underwater experiment for getting the understanding of submarine eruption. The main points of observation accompanied to the experiments are as follows :
1.Observation of underwater pressure waves using blast-sensor and underwater microphone
2.Observation of shock wave in the air using blast sensor and high-speed video recorder
3.Observations of water-dome and ballistic fragment usnig visible and infra-red video recorders
4.Simultaneous recording of eqrthquake, air wave and visible image of the explosion
The weigh of explosives used (Kiri-dynamite) were ranged from 250g to 4000g, adn the scaled depth ranged from 0 to 2.15 m/g^1/3.
Based on these experiments, weconvinced that the scaling rule for underwater volcanic eruption could be also establishd as in the case on dry ground.
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[Publications] Y.Litasov, Hasenaka,T., Litasov,K., Yarmolyuk,V., Sugorakova,A., Lebedev,V., Sasaki,M. and Taniguchi,H.: "Petrologic characteristics of Cenozoic alkaline basalts from the Azas Plateau, Northeast Tuva (Russia)"Northeast Asian Studies. 6. 201-226 (2002)
Description
「研究成果報告書概要(欧文)」より
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