If the relative movement of hanging wall and footwall is parallel to the strike of faultplane it is a strike slip fault.
如果断层上盘和下盘的岩石相对位移运动是平行断层面走向的，这种断层称为走滑断层。
2
If a fault has a vertical faultplane. How do we determine its hanging wall and footwall?
若一断层的断层面是直立的，我们怎么去确定它的上盘和下盘呢？
3
The aftershocks were distributed on (or near) the faultplane and were triggered by the stress redistribution in the medium in the nearby region of the faultplane.