• Title/Summary/Keyword: ${\tau}_c$ : Pd 현장경보

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Advanced and Application of Onsite EEW Technology in Korea (국내에서의 지진현장경보 기술 고도화 및 적용)

  • Lee, Ho Jun;Jeon, Inchan;Seo, Jeong Beom;Lee, Jin Koo
    • Journal of the Society of Disaster Information
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    • v.16 no.4
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    • pp.670-681
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    • 2020
  • Purpose: This study aims to derive a PGV prediction equation and to enhance the application of the Onsite EEW technology which has developed through previous studies. Method: The prediction equation for the Onsite EEW derived from earthquake data M≥3.0 and MMI≥II over the past four years. Local seismic risk is estimated using M and PGV deduced from P wave properties. Result: The improved PGV prediction equation estimated the MMI with an average accuracy of 94.8% and the 𝜏c : Pd method also showed valid performance for alerting local seismic risks. Conclusion: Onsite EEW technology is successfully applied to Korea, and becomes to reduce the blind zone to about 14km.