华北地区断层形变与地震的关系  

RELATIONSHIP BETWEEN FAULT DEFORMATION AND EARTHQUAKES IN NORTH CHINA

作　　者：郭良迁[1] 马青[1] 杜雪松[1] 孙东颖[1] 

机构地区：[1]中国地震局第一监测中心,天津300180

出　　处：《大地测量与地球动力学》2008年第3期14-20,共7页Journal of Geodesy and Geodynamics

基　　金："十一五"国家科技支撑课题(2006BAC01B02-02-03)

摘　　要：用线性拟合方法计算了华北地区1985—2006年断层背景活动速率,并对跨断层形变测量资料逐项扫描识别异常,分区带统计计算异常数量和异常频率。结果显示,在6级及以上地震发生前一年左右,异常频率开始增大,地震发生在异常高频延续过程中或者结束后。异常频率对5级地震也有一定的反映。The background deformation crustal velocity of North China in the period from 1985 to 2006 was calculated with the linear fitting method. Anomaly-distinguishing scanning was made one iterm after another and the data including cross-fault deformation observation anomaly amount and anomaly frequency were calculated according to the zones or areas. The results indicate that about one year before earthquakes of M≥6.0, anomaly frequency became larger and earthquake often occurred during or after the progress of high-frequency anomaly. There is also certain reflections of the anomaly frequency on earthquakes of M≥5. 0.

关 键 词：形变 断层活动 异常频率 前兆标志 地震 

分 类 号：P315.725[天文地球—地震学]