地壳由半无限大的基岩上一层厚度为H的表土层组成，入射地震波为垂直的SH波，产生水平地面运动。
The crust is constituted by the rock and a surface layer of soil with depth H over it. The incident seismic wave is a vertical SH shear wave to cause horizontal ground motion.
文中还从现今地壳运动角度，讨论了活动地块运动速率与强地震活动水平之间的可能联系。
Based on present crustal movement, the potential correlation between active crustal-block movement velocity and strong earthquake activity has been discussed.
两个板块的运动被认为是由碰撞-滑动断裂引起的，两部分地壳正在以水平移动的方式向着相反的方向碾压运动。
The motions of these plates create what are known as strike-slip faults, where two sections of Earth's crust are grinding past each other in opposite directions.
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