Estimating the 2004 Indian Ocean tsunami wave height and period from boulders’ distribution at Pakarang Cape, Thailand

Kazuhisa Goto, Kiyohiro Okada, Fumihiko Imamura

研究成果: Chapter

1 被引用数 (Scopus)

抄録

We propose a numerical method to estimate the local wave height and period of a tsunami from the distributions of boulders. The method was applied to boulders (<23 t) at Pakarang Cape, Thailand that were displaced from the reef slope onto the tidal bench by the 2004 Indian Ocean tsunami. They were deposited characteristically below the high-tide line, irrespective of size and no boulders were deposited on land. These features were used as the constraint of the calculation. We conducted over 10,000 cross-sectional calculations to satisfy above mentioned constraints, showing that the wave height and period at the shoreline were calculated to be 4–6 m and 18–37 min, respectively, which well concur with observed values. The input parameters for this calculation are the sizes and initial positions of boulders with seaward/landward limits, which are obtainable through the geological survey for historical and pre-historical tsunamis. This method is useful to estimate the local wave height and period of historical and pre-historical tsunamis from boulders reported throughout the world.

本文言語English
ホスト出版物のタイトルAdvances in Natural and Technological Hazards Research
出版社Springer Netherlands
ページ215-223
ページ数9
DOI
出版ステータスPublished - 2014 1 1

出版物シリーズ

名前Advances in Natural and Technological Hazards Research
35
ISSN(印刷版)1878-9897
ISSN(電子版)2213-6959

ASJC Scopus subject areas

  • Global and Planetary Change
  • Geography, Planning and Development
  • Economic Geology
  • Computers in Earth Sciences
  • Management, Monitoring, Policy and Law

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