1998 Fiscal Year Final Research Report Summary
| Project/Area Number |
08408013
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | IWATE PREFECTURAL UNIVERSITY (1998)
Tohoku University (1996-1997) |
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Principal Investigator |
SHUTO Nobuo IWATE PREFECTURAL UNIVERSITY, PROF., 総合政策学部, 教授 (90055137)
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| Co-Investigator(Kenkyū-buntansha) |
IMAMURA Fumihiko TOHOKU UNIVERSITY, ASSOC. PROF., 大学院・工学研究科, 助教授 (40213243)
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| Project Period (FY) |
1996 – 1998
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| Keywords | Sand movement / historical tsunami / earthquake tsunami / Topography change model / The 1954 Ansei Tkai earthquake and tsunami |
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| Research Abstract |
The numerical model to simulate a sand movement due to tsunami by taking bed and suspended loads into account is developed, in which the parameters such as maximum concentration of suspended load (Cs) and a vertical diffusion coefficient are important. In this case of Iruma, Izu, for the 1854 Ansei Tokai earthquake tsunami, effect of a vertical diffusion coefficient is small whereas those of maximum concentration of suspended load (Cs) is significant. The Cs is estimated through test cases in one-dimensional problem on a slope. The large mount of sand deposit at Iruma, Izu due to the 1854 Ansei Tokai tsunami is simulated by the numerical model. The result shows that the total sand movement could be reproduced by the numerical model but the simulated profile of sane deposit on the land does not show good correspondent to the measured one.
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