Deterministic seismic hazard assessments for Taiwan considering non-controlling seismic sources

J. P. Wang, Duruo Huang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The region around Taiwan is known for active seismicity, and a few studies have reported a high seismic hazard in this region, including a deterministic seismic hazard analysis (DSHA) study. Essentially, DSHA is to estimate earthquake ground motions considering the worst-case earthquake size and location, but without considering the seismic hazards from non-controlling sources. Understandably, when many non-controlling sources are present, the original DSHA framework could be insufficient. Therefore, using the extreme probability theory, this study introduces a new DSHA framework taking non-controlling seismic sources into account during DSHA calculations. The new method was applied to a seismic hazard assessment for Taiwan, showing that near the conjunctions of seismic source zones, the increase in seismic hazard could be substantial after considering a total of 19 non-controlling sources. More importantly, like other seismic hazard assessments for Taiwan, this study conveys the same alarming message that a high level of seismic hazard should be present around the region.

Original languageEnglish
Pages (from-to)635-641
Number of pages7
JournalBulletin of Engineering Geology and the Environment
Volume73
Issue number2
DOIs
StatePublished - May 2014

Keywords

  • Deterministic seismic hazard analysis
  • Extreme probability theory
  • Non-controlling seismic source
  • Taiwan

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