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Analysis of the OBS Data and Numerical Simulation for the 1990 Mariana Earthquake Tsunami

  • F. Imamura
  • N. Shuto
  • M. Okada
  • T. Nagai
  • H. Takenaka
Chapter
Part of the Advances in Natural and Technological Hazards Research book series (NTHR, volume 1)

Abstract

A method to reduce the noises in a OBS raw data by using the band-pass filter is presented. Tsunami records extracted from the raw data obtained in the deep ocean are compared with the computed results of the linear long wave theory. Although the computed and measured tsunami give the same maximum height of the order of 1cm, there are many differences between the two. Transformation of the tsunami on the continental slope determined from computed and observed data indicates that computed wave paths or directivity may be different from the observed one and that the physical dispersion is needed in the simulation to reproduce tsunami traveling along trenches and ridges.

Keywords

Tsunami Wave Deep Ocean Pressure Gauge Tsunami Height Fault Parameter 
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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References

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Copyright information

© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  • F. Imamura
    • 1
  • N. Shuto
    • 1
  • M. Okada
    • 2
  • T. Nagai
    • 3
  • H. Takenaka
    • 3
  1. 1.Disaster Control Research CenterTohoku Univ.Sendai 980Japan
  2. 2.Meteorological Research InstituteTsukubaJapan
  3. 3.Ohbayashi Corp.TokyoJapan

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