Reliability research of earthquake early warning information
Zhang Hongcai
Jin Xing
Abstract：The earthquake early warning system (EEWs)has highly require-ments for information’s timeliness and accuracy.In this paper,we proposed an information reliability test method for EEWs.Based on the EEWs’application features,this paper proposed four information reliability tests,which are signal to noise ratio (SNR)test,characteristic parameters (such asτc and Pd )compat-ibility test,characteristic parameters coordination test and EEW location relia-bility test.For each test,a quantitative calculation formula is defined,and then the reliability of the entire information can be calculated.4 737 three-component acceleration records of 444 seismic events from KiK-net in Japan were used in order to test and verify the applicability of our method.The results show that, by taking the reliability tests method proposed in this paper,the accuracy and reliability of the EEW information are improved,and then “missed alarms”or“false alarms”are reduced.
Keywords：earthquake early warningsignal to noise ratiocompatibilitycoor-dination
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：16( 615-630 )