Near-field amplitudes of Tsunami from submarine slumps and slides


TODOROVSKA M., Hayir A. , TRIFUNAC M.

NATO Advanced Research Workshop on Underwater Ground Failures on Tsunami Generation, Modeling, Risk and Mitigation, İstanbul, Turkey, 23 - 26 May 2001, vol.21, pp.59-68 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 21
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.59-68

Abstract

Tsunami generated by submarine slumps and slides are investigated in the near-field, using simple source models that consider the effects of source finiteness and directivity. Five simple two-dimensional kinematic models of submarine slumps and slides are described mathematically as combinations of spreading constant or sloping uplift functions. Tsunami waveforms for these models are computed using linearized shallow-water theory for constant water depth and transform method of solution (Lapace in time and Fourier in space). Results for tsunami waveforms and tsunami peak amplitudes are illustrated for selected model parameters, in the near-field, for a time window of the order of the source duration.