Hydraulic experiments and numerical model of two-layer for a landslide-induced tsunami

Yoshirori Shigihara, Daichi Goto, Fumihiko Imamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Generating and propagation of a landslide-induced tsunami is clarified by carrying out the hydraulic and numerical experiments in the open-channel. The effect of the interactive force between layers of the debris flow and the water is important to generate a tsunami, controlling the amplitude and wave period. The numerical simulation using the model of two-layer with shear stress models on the bottom and interface is applied to the present experiments and is compared with its results. Selecting the appropriate coefficients of them, calculated the debris flow agrees with the measured results, and ensures the process of rushing into the water. And the wave frequency dispersion effect in upper-layer is essential to simulate the propagation and discuss the numerical methods to introduce the effect. The method of the mixed explicit and implicit schemes in two steps enables to simulate the tsunami propagation as long as the initial profile of tsunami is given as boundary.

Original languageEnglish
Title of host publicationAsian and Pacific Coasts, 2003 - Proceedings of the 2nd International Conference
EditorsYoshimi Goda, Kazuo Nadaolta, Wataru Kiolta
Publisher[publishername] World Scientific
ISBN (Print)9789812703040
DOIs
Publication statusPublished - 2004 Jan 1
Event2nd International Conference on Asian and Pacific Coasts, APAC (WITH CD-ROM) 2003 - Chiba, Japan
Duration: 2004 Feb 292004 Mar 4

Publication series

NameAsian and Pacific Coasts, 2003 - Proceedings of the 2nd International Conference

Conference

Conference2nd International Conference on Asian and Pacific Coasts, APAC (WITH CD-ROM) 2003
CountryJapan
CityChiba
Period04/2/2904/3/4

Keywords

  • Hydraulic experiment
  • Landslide
  • Numerical model of two-layer
  • Tsunami

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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