Run-up characterstics of symmetrical solitary tsunami waves of unknown shapes

Details Run-up characterstics of symmetrical solitary tsunami waves of unknown shapes Run-up characterstics of symmetrical solitary tsunami waves of unknown shapes

2008-05-05

arxiv.org/abs/0805.0526v1

Physics

Atmospheric and Oceanic Physics

Submitted to PAGEOPH

Scientific paper

10.1007/s00024-008-0425-6

The problem of tsunami wave run-up on a beach is discussed in the framework of the rigorous solutions of the nonlinear shallow-water theory. We present an analysis of the run-up characteristics for various shapes of the incoming symmetrical solitary tsunami waves. It will be demonstrated that the extreme (maximal) wave characteristics on a beach (run-up and draw-down heights, run-up and draw-down velocities and breaking parameter) are weakly dependent on the shape of incident wave if the definition of the significant wave length determined on the 2/3 level of the maximum height is used. The universal analytical expressions for the extreme wave characteristics are derived for the run-up of the solitary pulses. They can be directly applicable for tsunami warning because in many case the shape of the incident tsunami wave is unknown.

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