Application of Pd-τc compatibility criterion to distinguishing triggered events
Zhang Hongcai
Jin Xing
Li Jun
Chen Zhiyong
Abstract：Combining the operation status of the earthquake early warning (EEW) system in Fujian Province,this paper discusses the feasibility of the Pd-τc compatibility criterion in discrimination of triggered events,based on seis-mic records of KiK-net in Japan and seismic monitoring networks of Fujian Province,in which both spontaneous earthquakes and artificial explosion events are included.The results show that,for large local earthquakes and false trig-gering events,Pd-τc criterion is quite reliable with less error.Also,teleseismic earthquake events may be roughly judged by the criterion.But artificial explosions and/or small magnitude local earthquakes cannot be effectively dis-tinguished only by this criterion.Furthermore,based on the Pd-τc compatibility test results,this paper sets an intensity test standard by the parameter Pd =10-3 cm,by which those destructive earthquakes can be identified more accu-rately.The present method will help to improve the reliability of triggered events discrimination,promote processing efficiency of the whole EEW system,eventually generate more accurate seismic alert message.
Keywords：earthquake early warningPd-τc compatibility criteriontriggered events discrimination
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 102-110 )