%0 Journal Article %T 河北及邻区平均波速比变化特征分析 %T The average wave velocity ratio analysis of the characteristics in Hebei Province and its adjacent areas %A 王亚茹 %A 王想 %A 宫猛 %A 郭蕾 %A 刘晓丹 %A Wang Yaru %A Wang Xiang %A Gong Meng %A Guo Lei %A Liu Xiaodan %J 中国地震 %@ 1001-4683 %V 32 %N 4 %D 2016 %P 747-755 %K 波速比;异常;中等地震;预报效能 %K Wave velocity ratio;Abnormal reaction;Moderate earthquake;Prediction efficiency %X 用和达法计算河北及邻区地震波速比并按照不同震级不同窗口作滑动平均。通过对唐山地区波速比变化特征与中强地震对应关系的定性分析,发现ML ≥ 1.5地震波速比曲线与ML ≥ 4.0的地震对应较好,提出异常指标进行定量统计得到该区波速比异常与地震的对应关系和预报效能;按照同样的思路对河北另外3个地区进行分析,发现各分区波速比异常既有共性特征也有差异。 %X In this article we use the earthquake data in Hebei Province and its adjacent area to calculate the average wave velocity ratio,and scan the results with different window size and length. By analyzing the characteristics of the curve in different regions,we can find that there is a better corresponding relation between the curve of ML1.5 and moderate earthquake. So,we extract the abnormal index to calculate the prediction efficiency for the four areas. %R %U http://zgdz.eq-j.cn/zgdz/home %1 JIS Version 3.0.0