The spatiotemporal variation of the b-value and its tectonic implications in North China

查看全文 作　　者：Yujie [1]Zheng;Shiyong [1]Zhou

机构地区：[1]School of Earth and Space Sciences,Peking University

出　　处：《Earthquake Science》索引2014年第27卷第3期,共10页

基　　金：jointly funded by the National Natural Science Foundation of China (Grant No.41274052);the Seismological Research Project of China (Grant No.201208009);financially supported by Peking University President’s Research Funding for undergraduate students (2012–2013) 摘　　要：In this study,we adopt an improved Bayesian approach based on free-knot B-spline bases to study the spatial and temporal distribution of the b-value.Synthetic tests show that the improved Bayesian approach has a superior performance compared to the Bayesian approach as well as the widely used maximum likelihood estimation(MLE) method in fitting the real variation of b-values.We then apply the improved Bayesian approach to North China and find that the b-value has a clear relevance to seismicity.Temporal changes of b-values are also investigated in two specific areas of North China.We interpret sharp decreases in the b-values as useful messages in earthquake hazard analysis. 关键词：中国北方 B值构造意义时空变化地震危险性分析贝叶斯方法最大似然估计时空分布

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The spatiotemporal variation of the b-value and its tectonic implications in North China

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