垂直入射
Axial Direction Diffracted Field Analysis of Circular Aperture with Vertical Incidence of Spherical Wave
球面波垂直入射下圆形口径面的轴向绕射场分析
The primary cause is the morning sun oblique incidence earth, noon vertical incident solar rays earth.
主要起因是早晨太阳倾斜发生地球, 中午垂直的事件太阳光芒地球.
For the vertical incidence of the waves, the obvious amplification of the surface displacements appears on the top of the hill in the quite low frequency range as the rigidity of hilly region decreases;
当波垂直传播时,地表位移放大出现在隆起顶部,频率随隆起区变软,明显向低频移动,可出现在很低频段内,且随隆起区变软放大更为显著;
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