乌鲁木齐附近地区小爆破识别判据的研究  

STUDY ON IDENTIFICATION CRITERION OF SMALL EXPLOSION IN URUMQI'S NEIGHBOURING AREA

作　　者：杨成荣[1] 王桂岭[1] 敖雪明[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2001年第1期30-38,共9页Inland Earthquake

摘　　要：采用新疆乌鲁木齐地区多个地震台的位移仪及速度仪记录 ,探讨了人工小爆破记录与天然地震记录的差异及其识别判据。结果发现 ,爆破记录与地震记录在震相、P波垂直向初动符号分布、振幅衰减、振幅比 AS/ AP等方面具有不同的特征 ,据此我们制定出了识别爆破的单项判据和综合判据。Using records of displacement seismographs and velocity seismographs at a few of seismostations in Urumqi area, the difference between small artificial explosion records and natural earthquake records and the criterion to identify small explosions were analyzed. It is found that there are different features in phase, distribution of P wave first motion marks, amplitude attenuation,amplitude ratio A\-S/A\-P between explosion records and earthquake records. Based on these features, we gave the single criterions and comprehensive criterion to identify explosions.

关 键 词：小爆破 天然地震 特殊震相 乌鲁木齐 识别判据 振幅衰减 

分 类 号：P315.63[天文地球—地震学]