摘要
运用形变速率累加法对青藏决体东北缘积累近30年的6个跨断层流动水准场地观测资料进行了分析,讨论了异常信息提取的经验和方法,搜集并分析了各场地周围400 km范围内的震例,获得了形变速率累加法的应用经验与前兆异常特征:①异常累加图比原始曲线图在异常的识别上更加突出和直观;②该方法只对超出控制限较连续的异常点残差进行累加,发生间隔较长的异常点则不进行累加计算;③从异常开始到发生地震的时间上得知,该方法可作为地震中期预报指标。
Six cross - fault leveling data of thirty years in northeastern margins of Qinghai - Tibet block withthe method of Deformation Rate Accumulation are analyzed, and the experience and method for extracting a- nomaly information are discussed, the relevant earthquake cases within 400 km are gathered and analyzed, the experience and characteristics of deformation rate accumulation show： ①Anomaly accumulation chart is moreprominent and intuitive than primary curve; ②Only out -of- range and continuous anomaly data is cumula- ted, and discontinuous anomaly data isn＇ t cumulated ; ③From the time that beginning of anomaly to the earth- quakes, this method can be the medium - term indicator of the earthquake prediction.
出处
《高原地震》
2012年第2期15-19,共5页
Plateau Earthquake Research
关键词
速率累加
跨断层水准
异常分析
地震预报
Rate accumulation
Cross -Fault leveling
Anomaly analysis
Earthquake prediction
