Far-field effects of large tsunamis produced by the Makran subduction zone

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

The 2004 Indian Ocean tsunami which exported death and destruction to far distant shores, once more emphasized the tsunami hazards associated with transoceanic tsunamis. Historical records of tsunamis in the Makran subduction zone (MSZ) reveal mat Makran tsunamis are capable of producing large waves in the far-field. The Makran tsunami of 1945 produced by an Mw8.1 earthquake was reported to cause farfield effects in the Indian Ocean and reached a height of about 30 cm in the Seychelles, at the distance of about 3500 km from the MSZ. Here, we assess historical observations of this event and perform numerical modeling of mis tsunami with emphasis on its far-field effects. Our numerical modeling successfully reproduces most feathers of the historical observations including its far-field effects. Southward propagation of Makran large tsunamis is investigated and their possible effects on Maldives and Seychelles islands are discussed. This study will help to better understand tsunami hazard associated with the MSZ, especially its far-field hazard.

Original languageEnglish
Title of host publicationProceedings of the 28th International Conference on Ocean, Offshore and Arctic Engineering 2009, OMAE2009
Pages225-231
Number of pages7
EditionPART A
DOIs
Publication statusPublished - 31 Dec 2009
Event28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2009 - Honolulu, HI, USA United States
Duration: 31 May 20095 Jun 2009

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
NumberPART A
Volume4

Conference

Conference28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2009
Country/TerritoryUSA United States
CityHonolulu, HI
Period31/05/095/06/09

Keywords

  • 1945 tsunami
  • Far-field effects
  • Historical observations
  • Makran subduction zone
  • Numerical modeling

ASJC Scopus subject areas

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

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