Journal of the Society of Disaster Information (한국재난정보학회 논문집)

The Korean Society of Disaster Information (한국재난정보학회)
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Advanced and Application of Onsite EEW Technology in Korea

국내에서의 지진현장경보 기술 고도화 및 적용

  • Received : 2020.07.31
  • Accepted : 2020.10.23
  • Published : 2020.12.31
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Abstract

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.

연구목적: 본 연구는 기존 지진현장경보 연구를 통해 단일 지진계에서 관측한 P파로부터 PGV 값을 예측하기 위한 예측식을 제시하고, 예측 결과를 현장경보에 이용하기 위한 기술적 접근 방안들을 도출하기 위한 것이다. 연구방법: 과거 4년간 규모 3,0 이상의 지진가운데 진도등급 II 이상의 데이터를 이용하여 P파로부터 PGV를 예측하기 위한 수식을 도출하고, 진원 정보 추정 없이 지진의 규모와 PGV의 크기를 상대적으로 비교하여 지진위험을 알려줄 수 있는 기술을 적용하였다. 연구결과: 개선한 PGV 예측식은 평균 94.8%의 정확도로 MMI를 추정하였고, 𝜏c : Pd 방법 역시 로컬 지진위험을 경보하기 위한 유효한 성과를 보여주었다. 결론: 현장경보기술을 국내에 성공적으로 적용하였으며, 경보공백역을 약 14km 까지 줄일 수 있는 방안을 제시하였다.

Keywords

Acknowledgement

본 연구는 한국기상산업기술원 기상지진 See-At기술개발사업의 연구비 지원(KMI2018-02210)에 의해 수행되었으며 지원에 감사드립니다.

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