Structural Features of Megathrust beneath the North Island, New Zealand

在新西兰北岛进行的有源地震实验揭示了Hikurangi高原的详细俯冲构造和上覆澳大利亚板块的构造变形。俯冲板块在北岛下方的倾角有明显的变化，海洋物质在其周围堆积形成了一个显著的低速体。从这一异常构造向东发育了一系列分支断裂，如Wairapapa断裂。

Active source seismic experiment conducted in the North Island, New Zealand revealed detailed subduction structure of the Hikurangi Plateau and the structural deformation of the overlying Australian plate. The subducted slab show a clear change in its dip beneath the North Island, around which oceanic materials are stacked to form a remarkable low velocity body. A series of branch faults such as the Wairapapa fault are developed eastward from this anomalous structure.