Reliability assessment on earthquake early warning: A case study from Taiwan

Yun Xu, J. P. Wang, Yih Min Wu, Hao Kuo-Chen

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Earthquake early warning (EEW) has been implemented in several regions around the world. However, because of natural randomness and uncertainty, false alarm and missed alarm can be expected in EEW. The key scope of this study is to evaluate the reliability of an on-site EEW in Taiwan, by testing the system's algorithm with 17,836 earthquake data from 1999 to 2013. The analysis shows that the on-site EEW system, empirically speaking, should have a false-alarm probability of 2.5%, and a missed-alarm probability of 14.1%. Considering missed alarm should be more critical to EEW, a new algorithm that could reduce the system's missed-alarm occurrences to 6% is also discussed in this paper.

Original languageEnglish
Pages (from-to)397-407
Number of pages11
JournalSoil Dynamics and Earthquake Engineering
StatePublished - 1 Jan 2017


  • Earthquake early warning
  • False alarm
  • Missed alarm
  • Taiwan


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