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

Kazuhisa Goto, Kiyohiro Okada, Fumihiko Imamura

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationAdvances in Natural and Technological Hazards Research
PublisherSpringer Netherlands
Pages215-223
Number of pages9
DOIs
Publication statusPublished - 2014 Jan 1

Publication series

NameAdvances in Natural and Technological Hazards Research
Volume35
ISSN (Print)1878-9897
ISSN (Electronic)2213-6959

Keywords

  • 2004 Indian Ocean tsunami
  • Boulder
  • Pakarang Cape
  • Tsunami

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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  • Cite this

    Goto, K., Okada, K., & Imamura, F. (2014). Estimating the 2004 Indian Ocean tsunami wave height and period from boulders’ distribution at Pakarang Cape, Thailand. In Advances in Natural and Technological Hazards Research (pp. 215-223). (Advances in Natural and Technological Hazards Research; Vol. 35). Springer Netherlands. https://doi.org/10.1007/978-94-007-7269-4_11