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Pure and Applied Geophysics

, Volume 165, Issue 11–12, pp 2045–2058 | Cite as

Evaluating Tsunami Hazard in the Northwestern Indian Ocean

  • Mohammad HeidarzadehEmail author
  • Moharram D. Pirooz
  • Nasser H. Zaker
  • Costas E. Synolakis
Article

Abstract

We evaluate here the tsunami hazard in the northwestern Indian Ocean. The maximum regional earthquake calculated from seismic hazard analysis, was used as the characteristic earthquake for our tsunami hazard assessment. This earthquake, with a moment magnitude of M w 8.3 and a return period of about 1000 years, was moved along the Makran subduction zone (MSZ) and its possible tsunami wave height along various coasts was calculated via numerical simulation. Both seismic hazard analysis and numerical modeling of the tsunami were validated using historical observations of the Makran earthquake and tsunami of the 1945. Results showed that the possible tsunami may reach a maximum height of 9.6 m in the region. The distribution of tsunami wave height along various coasts is presented. We recommend the development of a tsunami warning system in the region, and emphasize the value of education as a measure to mitigate the death toll of a possible tsunami in this region.

Keywords

Northwestern Indian Ocean Makran subduction zone (MSZ) deterministic tsunami hazard assessment (DTHA) maximum regional earthquake near-field effects numerical modeling 

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Copyright information

© Birkhaueser 2008

Authors and Affiliations

  • Mohammad Heidarzadeh
    • 1
    Email author
  • Moharram D. Pirooz
    • 1
  • Nasser H. Zaker
    • 2
  • Costas E. Synolakis
    • 3
  1. 1.School of Civil Engineering, College of EngineeringUniversity of TehranTehranIran
  2. 2.Graduate Faculty of EnvironmentUniversity of TehranTehranIran
  3. 3.Department of Civil EngineeringUniversity of Southern CaliforniaLos AngelesU.S.A.

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