It is usually accepted that the path effect and the soft rock siteeffect determined from small-moderate earthquakes are fit for strong earthquakes in the same region.
大家知道，在同一地区，用中小地震确定的传播路径影响和软基岩场地效应，同样适用于强震。
2
The Fourier amplitude spectrum used in a seismological model can be expressed as a product of source spectrum, propagation path factor and siteeffect in frequency domain.
在频域内，场地的地震动傅立叶幅值谱，可以表示为震源谱、传播路径影响因子和场地效应的乘积。
3
The results indicate that the vertical bending moment of girders, especially the girders of middle span, are influenced more obviously by coherence effect than by local siteeffect.