The azimuthal extremum of shear-waves is changed.But the azimuth of compressional velocity minima can still provide an excellent indicator of the direction of maximum far-field tectonic stress.

• 横波波速空间分布的方位极值规律发生变化，但纵波波速空间分布的方位极值规律不变，仍能提供最大远场构造应力施加的方向。