有记录以来最强烈的地震就发生在智利，时间为1960年，周六的地震是智利发生的第三次超过8.7级的强震。
Chile experienced the strongest earthquake on record in 1960, and Saturday's quake was the nation's third of over magnitude-8.7.
这些结果可为缺乏强震记录的地区的地震动估计提供参考。
These results can provide reference for the evaluation of the earthquake motion of region where the strong earthquake records is absent.
本文以4种场地土条件下40条强震记录为输入，对弹性单自由度（SDOF）系统的地震输入能量谱进行了研究。首先研究了SDOF系统参数和地面运动参数对弹性地震输入能量谱的影响。
The earthquake input energy spectrum of elastic single degree of freedom(SDOF) system under a world-wide ensemble of 40 earthquake records of different site types are studied.
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