DOI: 10.1002/2014GL063002
论文题名: A P wave-based, on-site method for earthquake early warning
作者: Colombelli S. ; Caruso A. ; Zollo A. ; Festa G. ; Kanamori H.
刊名: Geophysical Research Letters
ISSN: 0094-8913
EISSN: 1944-8644
出版年: 2015
卷: 42, 期: 5 起始页码: 1390
结束页码: 1398
语种: 英语
英文关键词: early warning systems
; on-site method for earthquake early warning
; rapid ground shaking prediction
; real-time seismology
Scopus关键词: Alarm systems
; Earthquakes
; Real time systems
; Seismic waves
; Continuous measurements
; Dimensionless variables
; Early Warning System
; Earthquake early warning
; Earthquake early warning systems
; Ground-shaking
; Peak ground velocity
; Real-time seismology
; Forecasting
; amplitude
; early warning system
; P-wave
; real time
; strong motion
英文摘要: A new strategy for a P wave-based, on-site earthquake early warning system has been developed and tested on Japanese strong motion data. The key elements are the real-time, continuous measurement of three peak amplitude parameters and their empirical combination to predict the ensuing peak ground velocity. The observed parameters are compared to threshold values and converted into a single, dimensionless variable. A local alert level is issued as soon as the empirical combination exceeds a given threshold. The performance of the method has been evaluated by applying the approach to the catalog of Japanese earthquake records and counting the relative percentage of successful, missed, and false alarms. We show that the joint use of three peak amplitude parameters improves the performance of the system as compared to the use of a single parameter, with a relative increase of successful alarms of about 35%. The proposed methodology provides a more reliable prediction of the expected ground shaking and improves the robustness of a single-station, threshold-based earthquake early warning system. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925844065&doi=10.1002%2f2014GL063002&partnerID=40&md5=0621cf81e778b20e53cadb620cff1ea4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8529
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Physics, University of Naples Federico II, Naples, Italy
Recommended Citation:
Colombelli S.,Caruso A.,Zollo A.,et al. A P wave-based, on-site method for earthquake early warning[J]. Geophysical Research Letters,2015-01-01,42(5).