震中拗陷与地震形变带提供了震源区大小的信息。活断层现代粘滑破裂段与破裂方向对潜在震源区的圈定非常要紧。壳内低速层是潜在震源区的背景层。按照地震活动的重复性,上述五点可作为潜在震源区的地质地貌标志。 Epicentral depression and seismic deformation zones provide information on the size of the source zone. It is very important for the delineation of potential source regions that the current stick-slip rupture and rupture directions of active faults are delineated. The low velocity layer in the shell is the background layer of the potential source region. According to the repeatability of seismic activity, the above five points can be used as a potential source area geomorphology landmarks.