文章基本信息

标题：Real-time P-wave picking for earthquake early warning system using discrete wavelet transform
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作者：Ali G. Hafez ; Ahmed Abdel Azim ; M. Sami Soliman 等
期刊名称：NRIAG Journal of Astronomy and Geophysics
印刷版ISSN：2090-9977
电子版ISSN：2090-9985
出版年度：2020
卷号：9
期号：1
页码：1-6
DOI：10.1080/20909977.2019.1698144
语种：English
出版社：Elsevier
摘要：P-wave picking is one of the important steps for earthquake parameter determination. Although manual inspection of P-wave arrival timing is the most accurate method for detection but, using automated algorithm is a must in order to facilitate this continuous task. In this research article an automated real-time algorithm is introduced to determine P-wave arrival timing of multiple of stations in a sub-network of the Egyptian National Seismic Network (ENSN). This algorithm generates a daily report of all events recorded by this sub-network. The main advantage of this proposed algorithm is its small processing time to give accurate P-wave arrival timings. This merit had been invested to make a proposal for Earthquake Early Warning (EEW) system using this algorithm. Additionally, this algorithm can detect very small events starting from micro-earthquakes due to the use of multiresolution analysis (MRA) of discrete wavelet transform (DWT). Results show a high rate of successful detections of 94.6%with low false alarm rate.
关键词：Seismic network;real time analysis;EEW;P-wave arrivals;DWT and spectral analysis