Journal
JOURNAL OF DISASTER RESEARCH
Volume 4, Issue 6, Pages 435-440Publisher
FUJI TECHNOLOGY PRESS LTD
DOI: 10.20965/jdr.2009.p0435
Keywords
driftwood collision force; probability of occurrence; inundation flow; tsunami
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Funding
- Japan Society for the Promotion of Science [19510181]
- north Tohoku university of Akita
- north Tohoku university of Hirosaki
- north Tohoku university of Iwate
- Grants-in-Aid for Scientific Research [19510181] Funding Source: KAKEN
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A practical method for estimating maximum superposed force due to simultaneous or near-simultaneous collision of pieces of driftwood accompanying tsunami inundation flow and its probability of occurrence is presented by examining inundation flow velocity (congruent to collision velocity), acceleration distance within which the driftwood velocity becomes almost the same as inundation flow velocity, collision force, collision force duration, rise time from start to peak collision force, driftwood collision probability and by systematically integrating examination results.
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