A number of accelerograms obtained in small and moderate earthquakes can be used for the " blind prediction " studies 已经获取的一批中小地震近场记录可以用来进行盲测研究。
Now the diffuse earthquake has been used in the earthquake hazard analysis for the nuclear power plant . so we collect some records from the small - moderate earthquakes with magnitude between 4 . 0 - 6 . 5 and distance from the source less than 70 km . then we develop the attenuation laws of these earthquakes expecting to reflect the attenuation laws of the diffuse earthquakes 通常为近源中小地震的弥散地震影响是核工程安全性评价中的重要内容,为满足核工程地震安全性评价工作的需要,本文选取了一些震级介于4 . 0 ? 6 . 5之间,距离小于70km的中小地震的近场记录,对这些地震的衰减规律进行了研究。