단일 지진관측소의 지반가속도 구간 누적값 및 최대값 파라미터를 이용한 실시간
지진규모 추정 연구

연관희^1)*

¹⁾한전 전력연구원

Real-time Estimation of the Earthquake Magnitude Using the Bracketed Cumulative and Peak Parameters of the Ground-motion Acceleration of a Single Station

Kwan Hee Yun^1)*

¹⁾KEPCO Korea Electric Power Research Institute

(Received 23 September 2013; Revised 26 October 2013; Accepted 30 October 2013)

Abstract

In industrial facilities sites, the conventional method determining the earthquake magnitude (M) using earthquake ground-motion recordsis generally not applicable due to the poor quality of data. Therefore, a new methodology is proposed for determining the earthquakemagnitude in real-time based on the amplitude measures of the ground-motion acceleration mostly from S-wave packets with the highersignal-to-ratios, given the Vs30 of the site. The amplitude measures include the bracketed cumulative parameters and peak groundacceleration (As). The cumulative parameter is either CAV (Cumulative Absolute Velocity) with 100 SPS (sampling per second) or BSPGA(Bracketed Summation of the PGAs) with 1 SPS. The arithmetic equations to determine the earthquake magnitude are derived from theCAV(BSPGA)-As-M relations. For the application to broad ranges of earthquake magnitude and distance, the multiple relations ofCAV(BSPGA)-As-M are derived based on worldwide earthquake records and successfully used to determine the earthquake magnitudewith a standard deviation of ±0.6M.

Key Words : Real-time earthquake magnitude determination,Bracketed summation,Peak ground acceleration per second,Cumulative absolute velocity,Single station

Reference

Journal Abbreviation J. Earthq. Eng. Soc. Korea
Frequency Bimonthly
Doi Prefix 10.5000/EESK
Year of Launching 1997
Publisher Earthquake Engineering Society of Korea

Indexed/Tracked/Covered By

Online Submission

submission.eesk-j.or.kr

EESK

Earthquake Engineering Society of Korea