Tsunami disaster assessment in the southwestern Pacific countries due to giant earthquakes near Japan

T. Takahashi, S. Koshimura, K. Harada, S. Suzuki, Y. Okumura, Y. Kawata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The southwestern Pacific Ocean is prone to significant tsunami risk due to giant earthquakes generated near Japan. In this study, two huge tsunamis in the Japan Trench and the Nankai Trough were assumed. They have been called the Sanriku Earthquake Tsunami and the Tonankai-Nankai Earthquake Tsunami. To check the uncertainty of the tsunami model, four more models that intensify the dislocations of half of the tsunami sources were assessed. The computed tsunami energy distributions show that the Sanriku Tsunami propagates mainly toward the central Pacific Ocean and has little effect on the southwestern Pacific countries. On the other hand, the tsunami in the Nankai Trough propagates mainly toward the southwestern Pacific Ocean because of the Mariana Trench. In many cities, the water level exceeds 50 cm. Further, there are some observation stations along the path of the tsunami propagation and they might be useful for a far field tsunami warning system in this region.

Original languageEnglish
Title of host publicationSafety and Security Engineering III
Pages495-506
Number of pages12
DOIs
Publication statusPublished - 2009
Event3rd International Conference on Safety and Security Engineering, SAFE 2009 - Rome, Italy
Duration: 2009 Jul 12009 Jul 3

Publication series

NameWIT Transactions on the Built Environment
Volume108
ISSN (Print)1743-3509

Other

Other3rd International Conference on Safety and Security Engineering, SAFE 2009
CountryItaly
CityRome
Period09/7/109/7/3

Keywords

  • DART
  • Far field tsunami warning
  • Japan Trench
  • Nankai Trough
  • Tide gauge

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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  • Cite this

    Takahashi, T., Koshimura, S., Harada, K., Suzuki, S., Okumura, Y., & Kawata, Y. (2009). Tsunami disaster assessment in the southwestern Pacific countries due to giant earthquakes near Japan. In Safety and Security Engineering III (pp. 495-506). (WIT Transactions on the Built Environment; Vol. 108). https://doi.org/10.2495/SAFE090461