Using lidar, photogrammetry and field studies, we investigate the structure and kinematics of the Hope, Kelly, and Alpine faults where they converge and intersect along the Australian-Pacific plate boundary in New Zealand. Approximately 50% of the reverse-dextral slip rate of the Alpine fault in the west transfers to the dextral central Hope Fault in the east via a horsetail splay zone of distributed oblique dextral-normal shear forming the Hope-Kelly fault system. The westernmost portion of the Hope fault is misoriented for dextral slip and is likely an extensional fault that accommodates the Alpine fault slip rate change across the intersection zone. As it transitions to an extensional fault, most of the strike-slip of the Hope fault is transferred southward onto Kelly fault strands via incipient, linking fault domains of coeval NE-SW and EW-striking dextral faults. The transition from the narrow zone defining the central Hope Fault to dispersed horsetail splays of the Hope-Kelly fault system is located immediately above the eastward down-dip projection of the Alpine Fault at the base of the seismogenic zone. This suggests that structural interactions among these faults within seismogenic depths control surface rupture geometries and kinematics. Coeval intermingling of surface rupture traces transecting latest Pleistocene to Holocene landforms indicates ongoing structural interactions in active faulting at the intersection of the Hope-Kelly fault splays with the Alpine fault. The transition from dextral to dextral normal kinematics on the horsetail splay accommodates differential orogenic growth through geometrically and kinematically efficient faulting that allows extension of the Alpine fault hanging wall parallel to strike, enabling the slip rate change between the central and northern Alpine fault sections.

使用激光雷达，摄影测量和野外研究，我们研究了希望，凯利和高山断层的结构和运动学，它们沿着新西兰的澳大利亚太平洋板块边界汇聚和相交。西部高寒断层的右旋右旋滑移率的大约50％经由分布在右旋正向剪切力上的马尾张开带转移到东部的右旋中部霍普断裂，形成了Hope-Kelly断裂系统。霍普断裂的最西端部分的右旋滑移方向不正确，很可能是伸展断裂，它适应了整个交叉带上阿尔卑斯断裂滑移率的变化。当它过渡到伸展断层时，霍普断层的大部分走滑都通过初始阶段向南转移到凯利断层上，链接同时代的NE-SW和EW引起的右旋断层的故障域。从限定中央希望断层的狭窄区域到希望-凯利断层系统的分散马尾状径迹的过渡位于成地震带底部高山断层的东下倾投影的上方。这表明在地震发生深度内这些断层之间的结构相互作用控制着表面破裂的几何形状和运动学特征。从最新更新世到全新世地貌的地表破裂痕迹的同时混合表明在希望断裂与阿尔卑斯断裂的交汇处的活动断层中正在进行的结构相互作用。