2003-2004年吴忠、灵武地区地震活动性分析  

2003～2004 Seismicity Analysis of the Wuzhong and Lingwu Regions

作　　者：马禾青[1] 任雪梅[1] 金春华[1] 盛菊琴[1] 

机构地区：[1]宁夏回族自治区地震局,银川750001

出　　处：《地震研究》2006年第2期114-117,共4页Journal of Seismological Research

摘　　要：2003年12月至2004年8月,宁夏吴忠、灵武地区出现了一次地震活动增强过程,与已有震例震前的地震活动增强过程非常相似,因此导致了一次地震短临预测,但此次地震预测后来证实为虚报。从经验预报的角度来看此次地震短临预测的依据是充分的。但利用地震活动加速模型进行分析的结果表明,此次地震活动过程能量释放随时间的加速程度不够,不足以导致一次MS5.0以上地震的发生。因此认为,现阶段地震预报应结合物理预测方法来进行,以克服经验预报的局限性。An increasing process of seismic activity appeared in the Wuzhong and Lingwu regions of Ningxia between Dec. 2003 and Aug. 2004, which is very similar to the situations before existed earthquake examples. In this case, we proposed a short-impending earthquake prediction, but it is proved an false prediction later. From the angle of empirical prediction, the bases of this short-impending prediction are sufficient. However, the result from seismicity acceleration model shows that the degree of energy release accelerating with time during this seismicity process is not enough to cause an earthquake with Ms ≥5.0. So we think that, in present time, earthquake prediction should be done combining with physical prediction methods so as to overcome the limits of empirical prediction.

关 键 词：吴忠 灵武地区 地震活动过程 地震活动加速模型 

分 类 号：P315.5[天文地球—地震学]