SV波在自由面上的全反射

本文研究了SV波在自由面上全反射的一些特殊现象。首先,从波动方程出发讨论了散射P、SV波的相移和反射场中P波的质点运动;然后,应用功能原理,计算了自由面上非均匀P波的能流密度,得出非均匀P波平均能流为零的一般结论。本文所得到的结论,对于各种地震波、弹性波和电磁波在两种均匀介质界面上发生的全反射,均可适用。

TOTAL REFLECTION OF SV WAVES ON THE FREE SURFACE

This paper studies some special phenomena of the total reflection of SV waves on the free surface. Firstly, the phase shifts of scattered p, SV waves and the motion of the particles in the reflected field of p waves are discussed on the basis of wave equations. Secondly, applying the work-energy theorem, the flux density of inhomogeneous p waves on a free surface is calculated, and it has been reached a general conclusion that the mean flux of the inhomogeneous p waves is equal to zero. In this paper, the phase shifts of scattered waves under the total reflection condition of SV waves, the discussion of the instantaneous energy-flux and the mean energy-flux of inhomogeneeus plane waves are all valid in the case of total reflection of seismic waves, elastic waves and electromagnetic waves at the interface of the two homogeneous media.