Fig. 5

Fault geometry models. View from northeast (top), looking up from southwest for Model S (middle) and for Model C (bottom). The major branch faults are, respectively, called Fault F located at the center, Faults B1 and B2 for the relatively lower and higher angle ones at the shallow depth of the northern segment. The inset highlights the locations of Faults B1 and B2 enclosed by the solid and dashed lines, respectively. The back-thrust faults called Faults H1 and H2 are also assumed at the northern part. The primary fault is connected to Fault B1 in Model C by filling the gap in Model S. The X-axis is directed to north