横波使地面水平晃动。

S-wave shaking the ground level.

瑞利波波速与横波波速极为接近。

The Rayleigh wave speed is very close to the shear wave speed.

一般地说横波速度大约是纵波速度的一半。

Normally the shear velocity is about half of the compressional velocity.

利用偶极横波测井计算地应力方向的公式法。

And the terrestrial stress direction also can be calculated by dipole wave data.