A SIMPLE METHOD FOR EVALUATING THE DENSITY OF TSUNAMI INUNDATION WATER

• MATSUTOMI Hideo

  秋田大学

Bibliographic Information

Other Title

• 津波氾濫水密度の簡易評価法

Abstract

 A simple method for evaluating the density of tsunami inundation water is developed for the advancement of the tsunami load and historical tsunami scale evaluations, which is characterized by the point discussing in the cross-sectional average concentration of sediment contained in the inundation water and the total sediment without dividing into the bed load and the suspended load. In the development process of the method, the frictional resistance law for the inundation flow (unsteady flow) under the movable bed condition is discussed and an evaluation example of the frictional resistance coefficient for the inundation flow is shown, using the data obtained by the previously reported experiments. The frictional resistance coefficient is about two times on average, compared with that for the steady flow under the movable bed condition. The proposed method could be applied to other inundation flows such as a river inundation flow if the experiment (or field survey) to measure (or estimate) the cross-sectional average concentration of sediment (∝ the denshity of inundation water) is carried out.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75 (2), I_385-I_390, 2019

  Japan Society of Civil Engineers

Keywords

• density of inundation water
• tsunami
• simple method
• experiment

Details

• CRID: 1390845702300492032
• NII Article ID: 130007730250
• DOI: 10.2208/kaigan.75.i_385
• ISSN: 18838944
• ISSN: 18842399
• Web Site: https://www.jstage.jst.go.jp/article/kaigan/75/2/75_I_385/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed