计算结果表明，在地表断层出露的周围地区，断层下盘地表地震动放大效应较大，断层上盘地表地震动放大作用有明显的降低。
Calculated results indicate that amplification effect is obvious in the area near surface fault, especially on the site that is in the downside fault.
软土对高频地微动信号有滤波作用，对低频信号起放大作用，而硬土层则相反。
Soft soil can filter high frequency signals, but can amplify low frequency signals.
算例表明，地层对地震运动加速度有一定的放大作用，在地下结构抗震计算中应以实际基岩地震运动加速度作为地震动输入。
The example shows that the ground has some amplifying action to seismic acceleration and the real seismic acceleration of the sole rock …
算例表明，地层对地震运动加速度有一定的放大作用，在地下结构抗震计算中应以实际基岩地震运动加速度作为地震动输入。
The example shows that the ground has some amplifying action to seismic acceleration and the real seismic acceleration of the sole rock …
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