Fig. 3.

Plan views of ΔCFF for target events with a normal-fault mechanism in the shallow crust (left) and for target events with a DDE mechanism within the subducted Pacific plate (right). The average of ΔCFF for the eastward and westward dipping faults is shown for the target events with a normal-fault mechanism (left), and the average for the six different faults is shown for the target events with a DDE mechanism (right) (see text for details). Mechanism diagrams shown at several selected points are those of eastward dipping faults (left) and westward dipping faults (right), respectively. Line A—B indicates the location of the profile in Fig. 4. The contour lines show the depth of the upper plate interface of the subducted Pacific plate every 20 km. The rectangles indicate the distribution of fault segments.