PROPAGATION AND AMPLIFICATION/ATTENUATION OF A STRONG BORE WITH TWO-DIMENSIONALITY IN PLANE SPACE
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- MATSUTOMI Hideo
- 中央大学 研究開発機構
Bibliographic Information
- Other Title
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- 平面二次元性を持つ強い段波の伝播と増幅・減衰
Abstract
<p> Aiming for the grasp of behavior characteristics of edge bore formed by tsunami, propagation and amplification/attenuation of an obliquely incident strong bore with two-dimensionality in plane space over a uniformly sloping beach are examined through the consideration and theoretical analysis of basic equations derived for the wave ray method for strong bores. As the results, it is indicated that 1) the bore propagation velocity depends on the static water depth h0fc in front of bore, ratio hfc/h0fc of the total water depth hfc of the bore front to h0fc, bottom slope tanβ in the direction perpendicular to the bore propagation direction and slope dΔ(y)/dy of the bore height distribution Δ(y), 2) the straight propagation property of strong bore is higher than that of water wave except for some conditions, 3) the amplification/attenuation factor dhfc/dt of hfc depeds on h0fc, hfc/h0fc, tanβ, bottom slope tanγ and water surface slope tanδ in the bore propagation direction and dΔ(y)/dy, 4) in the case that dΔ/dy=0 and bore is strong, analytical solutions of hfc are derived and the larger tanγ and tanδ are the higher amplification height of hfc becomes, and so on.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 77 (2), I_1189-I_1194, 2021
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390572590023274624
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- NII Article ID
- 130008160002
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- ISSN
- 2185467X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed