针对陡坎地形，采用数值模拟方法，探讨了陡坎地形在P波斜入射时，入射角度 、坡角 和入射方向变化等参数对地震波传播的影响。结果表明：（1）从陡坎底部到陡坎顶部，放大系数逐渐增大，而入射角度、坡角和入射方向没有影响。（2）入射角度 一定时，无论地震波顺着陡坎方向（左）入射还是逆着陡坎方向（右）入射，陡坎上侧的放大系数大于陡坎下侧的放大系数。同时，放大系数随着坡角 的增大而增大。（3）坡角 不变，地震波顺着陡坎方向（左）入射时，x 分量的放大系数随着入射角的增大而增大，z分量的放大系数则随着入射角的增大而减小。（4）地震波逆着陡坎方向（右）入射时，放大系数最大值基本在陡坎上侧边缘。地震波顺着陡坎方向（左）入射时，放大系数最大值并没出现在陡坎上侧边缘，坡角越大，偏离越大。（5）地震波顺着陡坎方向（左）入射时， x分量的放大系数比地震波逆着陡坎方向（右）入射时的大，z分量变化不大。

In this study, the seismic ground motion of the scarp topography under inclined P waves was analyzed using numerical simulation method. The effects of the incident degree, the slope angle, and the incident direction of seismic ground motion were discussed as well. It is found that from the bottom of scarp to the top, the amplification factor increased gradually, whereas it had no influence on the incident degree, the slope angle and the incident direction. When the incident degree was constant, the amplification factor of the scarp upside region was greater than that of the scarp downside region, regardless of the incident directions. At the same time, the amplification factor at the crest of the slope increased with the increase of the slope angle. When the slope angle was constant and the waves travelled away from the slope, the amplification factor of x component increased, while the amplification factor of z component decreased with the increase of incident angle. The results show that for waves travelling into the slope, the maximum amplification factor is generally found around the crest of the slope. For waves travelling away from the slope, the maximum amplification factor shifted from the slope crest. Moreover, the larger the slope angle, the farther the departure. The amplification factor of x component was larger for waves travelling away from the slope as compared to waves travelling into the slope, but the amplification factor of z component had no obvious change with the incident direction.