摘要
以1975年以来中国大陆6.0级以上地震震例作为研究对象,在一定的扫描时段和扫描半径下选择了10种物理意义明确、独立性较强的测震学指标,对大陆西南、华北、西北3个研究区进行了强震前震中区附近地震学参数中期震兆标志研究。结果发现,西南研究区15个震例异常的平均对应率为0.8,华北研究区10个震例的异常的平均对应率为0.7,西北研究区18个震例异常的平均对应率为0.7,可作为中国大陆强震测震学指标分区预测标志。
Based on the data of M≥6.0 earthquakes in Chinese mainland from 1975,in a certain scan time and scan radius from the epicenters,10 seismic parameters with clear physical significance and independence are choosed as objects to research the precursor symbol of the seismic parameters near epicenter area before strong earthquake.The result shows that the average corresponding ratio of precursor anomalies in 15 events in southwestern China is 0.77,the ratio in 10 events in northern China is 0.70 and in 18 events in northwestern China is 0.69.So this three numbers can be used as the precursor symbol of seismic parameters in each above rigions.
出处
《西北地震学报》
CSCD
北大核心
2004年第4期347-352,共6页
Northwestern Seismological Journal
关键词
震中区
地震学
参数
震兆标志
Epicenter area
Seismic parameter
Precursor symbol
