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Local behaviour of tsunamis

  • Kinjiro Kajiura
Part II — Tsunami Generation and Propagation
Part of the Lecture Notes in Physics book series (LNP, volume 64)

Abstract

Scale parameters of large tsunamis suggest that non-linearity of waves is important only within a short distance of about a half wavelength from the shoreline.The Carrier-Greenspan transformation of the non-linear shallow-water equations on a uniformly sloping beach is elucidated to give a set of linear equations analogous to the linearized equations of the original non-linear equations, and an explicit form of the wave-breaking criterion is given.Although a weak bore (or an undular bore) may be formed close to shore if the head wave of a tsunami is a positive wave, there may be no bore formation at all if the negative wave forms the front.The maximum run-up of a tsunami is caused mostly by the non-breaking wave enhanced by the effect of bay resonance.

Keywords

Bottom Slope Wave Steepness Progressive Wave Shallow Water Wave Negative Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • Kinjiro Kajiura
    • 1
  1. 1.Earthquake Research InstituteUniversity of TokyoTokyoJapan

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