Soil will absorb the high frequency of seismic wave;
②土体对地震波高频成分具有过滤作用；
Numerical results show that under the influence of horizontal seismic action, resonance will occur when the seismic wave frequency is identical to the second-order natural frequency of slope.
数值分析结果表明：在水平地震作用下，地震波频率与边坡的第二阶固有频率一致时，才会发生共振。
The high frequency part of seismic wave propagation in subsurface is easy to be absorbed or attenuated.
地震波在地下介质中传播时，高频成分易被吸收。
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