The surface rupture of PGF is concentrated in the region between the intersection of PGF and XYDF and HW, with mainly dip slip
. Since the length of the subfault of our model is 5 km, more than one observed surface offset may exist in one subfault, we averaged the measured surface slip along the 5 km length of each subfault and assigned that value to the shallowest subfault element.
The position of the X, Y, and Z axes of the instrument corresponds respectively to: (X) the direction perpendicular to the fault or fault-normal motion, (Y) direction parallel to fault strike or the strike slip motion along the fault surface and (Z) vertical direction or the dip slip
component of motion.