Figure 4: Comparison of the model with kinematic modeling from northern New Zealand. A: Basic solution from Beanland and Haines [1998] showing clockwise motion of the Hikurangi forearc with respect to the Australian plate. B: Surface velocity vectors from the model of oblique convergence with a weak subduction interface in the north and a strong interface in the south. The heavy dashed line denotes the boundary between the two regions. Boundary conditions are shown as bold arrows on the subducting Pacific plate and model results as light arrows on the Australian plate. The region of extension developed in the north is outlined.