山东苍山5.2级地震活动背景及震前地震活动
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摘要
分析了山东苍山52级地震前的历史地震活动、现今中小地震活动的时空分布及地震活动的异常特征。表明,苍山52级地震强度和空间分布与历史地震活动强度和空间分布特征相一致,并具有某些大震的异常特征,震前出现了长达12a的背景空区,出现了“信号震”和孕震空区,出现了多种测震学指标异常等。
The historical seismicity,the timespace distribution of recent medium and small earthquakes,and the anomalous features of the seismicity before M52 Earthquake at Cangshan are analyzed,it is suggested that the earthquake intencity and the spatial distribution of the M52 earthquake at Cangshan coincided with the historical earthquake activity intencity and the spatial distribution features,and had some anomalous features of large earthquake,for instance,the background gap as long as 12 a,the gap of“signal earthquake"and the seismogenic gap,and the varied anomalies of seismology occurred before the earthquake
引文
1孟庆武沂沭断裂带及相邻区域地震活动特征及趋势性分析东北地震研究,1989,5(4):71~732国家地震局科技监测司地震现场工作大纲和震情分析指南北京:地震出版社,199057~623陆远忠,沈建文,宋俊高地震空区与“逼近地震”地震学报,1982,4(4):327~333

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