中强地震前地震群集度C_V值的异常特征及其在地震预报中的应用  

ANOMALOUS FEATURE OF EARTHQUAKE SWARMDEGREE VALUE C_V AND ITS APPLICATIONTO EARTHQUAKE PREDICTION

作　　者：郭德科[1] 赵卫红[2] 

机构地区：[1]河南濮阳市地震台,河南濮阳457000 [2]中原油田总调度室,河南濮阳457000

出　　处：《内陆地震》2002年第4期331-336,共6页Inland Earthquake

摘　　要：利用地震活动群集度指标 CV值对华北地区 1 6次中强地震前 CV值与地震活动的关系进行了分析和研究 ,发现在中强震前 1— 3年 CV 值显示高值异常。把 CV值的这种特征应用于河南及其邻区 ML≥ 5.0地震的预报研究中 ,再根据制定的预报规则 ,进行预测内符检验和预报评分。结果表明 ,该方法是一种有效的中期地震预报方法 ,具有推广应用价值。The relation is analyzed and studied between earthquake swarm degree value C-V and seismic activity before 16 moderate and strong earthquakes in North China, and it is found that the value C-V showed high-value anomaly 1-3 years before the moderate and strong earthquakes. The authors applied this feature to the prediction of M-L≥5.0 earthquakes in Henan province and vicinity, and made the internal agreeable check and prediction marking. The result shows this method is effective in medium-term earthquake prediction, worth popularizing and applying.

关 键 词：中强地震 地震活动群集度 地震预报 震级 余震 

分 类 号：P315.75[天文地球—地震学]