The effects of variable speeds of a submarine block slide on near-field tsunami amplitudes


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Hayir A.

OCEAN ENGINEERING, vol.30, no.18, pp.2329-2342, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 18
  • Publication Date: 2003
  • Doi Number: 10.1016/s0029-8018(03)00109-4
  • Title of Journal : OCEAN ENGINEERING
  • Page Numbers: pp.2329-2342
  • Keywords: tsunami, near-field tsunami amplitudes, wave focusing, submarine block slide, water waves, SLUMPS

Abstract

In this study, the motion of a submarine block slide, with variable velocities, and its effects on the near-field tsunami amplitudes are investigated. The numerical results show that the amplitudes generated by the slide are almost the same as those created by its average velocity when (c) over bar /c(T) > 5, where (c) over bar is average velocity of the slide and c(T) = rootgh is the long period tsunami velocity in ocean of constant depth h. In contrast, the kinematic model of the slide must take into account time variations in the moving velocity, if (c) over bar /c(T) less than or equal to 5, especially when (c) over bar /c(T) similar to 1. (C) 2003 Elsevier Ltd. All rights reserved.