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Recent process in Probabilistic Tsunami Hazard Analysis (PTHA) for mega thrust subduction earthquakes

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

Original languageEnglish
Title of host publicationThe 2011 Japan Earthquake and Tsunami: Reconstruction and Restoration
Subtitle of host publicationInsights and Assessment after 5 Years
Publisher or commissioning bodySpringer Netherlands
Pages469-485
Number of pages17
ISBN (Electronic)978-3-319-58691-5
DOIs
StatePublished - 1 Jan 2018

Publication series

NameAdvances in Natural and Technological Hazards Research
Volume47
ISSN (Print)1878-9897
ISSN (Electronic)2213-6959

Abstract

A review of the progress of Probabilistic Tsunami Hazard Analysis (PTHA) for mega thrust subduction earthquakes after the 2004 Indian Ocean tsunami is presented. PTHA is used to quantify the tsunami inundation characteristics probabilistically, analogous to Probabilistic Seismic Hazard Analysis (PSHA) popularized since the early 1970s. The process of PTHA is briefly presented from frequency-intensity modeling, geometric fault parameter modeling, and synthetic slip distribution modeling. There are mainly three different approaches, i.e. historical records, a logic tree and random phase, to generate different slip distributions in PTHA. PTHA is useful for risk assessment, when combined with fragility models for probabilistic damage assessment. Moreover, PTHA provides a consistent framework that allows it to be integrated with probabilistic seismic hazard analysis (PSHA) for multi-hazard damage assessment.

    Research areas

  • Inundation, Probabilistic modeling, Synthetic tsunami modeling, Tsunami hazard assessment

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