华南地震2017，Vol.37Issue(2)：1-9,9.DOI:10.13512/j.hndz.2017.02.001
地震异常ECRS分析方法在北京地区的应用和检验
Application and Test of ECRS Earthquake Anomaly Analysis Method in Beijing Area
摘要
Abstract
ECRS (earthquake corresponding relevancy spectrum)method is one of concerned recognition methods of seismic anomalies in recent years. This paper analyzes the single and multi-parameter sliding extreme average relevancy spectrum of Beijing area by using ECRS method. The effectiveness of this method is evaluated preliminarily through the example analysis, extrapolation and comparing with the actual occurrence of earthquake. The results show that for the target earthquake with M≥4, when the inspection period is 12 months, single-parameter corresponding relevancy spectrum such as of b value, lack of earthquake has a certain ability to recognize seismic precursory anomaly of Beijing area; multi -parameter earthquake corresponding relevancy spectrum can identify earthquakes comprehensive precursory anomalies better in Beijing area comparing with single-parameter. The anomalies corresponding proportion and earthquake corresponding proportion are 7/8 and 9/11 respectively with the high abnormal reliability; taking high probability of 0.5 times the standard deviation of the mean value as the anomaly threshold, it can identify earthquake precursory comprehensive anomaly better, but will be affected in a certain extent by human factors.关键词
ECRS方法/地震异常/b值/缺震/北京地区Key words
ECRS method/Precursory anomaly/b value/Lack of earthquake/Beijing area分类
天文与地球科学引用本文复制引用
李红,邓志辉,邢成起,朱红彬,岳晓媛,武敏捷..地震异常ECRS分析方法在北京地区的应用和检验[J].华南地震,2017,37(2):1-9,9.基金项目
北京市地震局青年科技专项(QN03)、中国地震局三结合课题(160101)、中国地震局震情跟踪定向任务(2016010113)共同资助. （QN03）
