Fig. 2

(a) Schematic view of the model of a convergent-transform fault boundary. The dimension of the region is 1000 km (r-direction) × 9°(θ-direction) × 27°(φ-direction). The velocities and are imposed on the plates A and B, respectively. A detailed view of the boundary region where velocity is imposed is shown in Fig. 1. The dimension of the boundary region is 100 km (r-direction) × 4.5°(θ-direction) × 0.9° (φ-direction). (b) Schematic view of the model around a plate junction. The dimension of the region is 1000 km (r-direction) × 10.8° (θ-direction) × 18° (φ-direction).