ABSTRACT

The Campbell Plateau is a dominating bathymetric feature of New Zealand’s subantarctic region, strongly influencing the dynamics of both the Subtropical Front (STF) to the north and the Subantarctic Front (SAF) to the south. We present a consistent survey across New Zealand’s subantarctic of the relationships between front positions, bathymetry and water masses. The northwest side of the Campbell Plateau is comparatively warm due to a southward extension of the STF over the plateau. The SAF is steered south and east by the combined effect of the plateau and Macquarie Ridge, with waters originating in the SAF also found north of the plateau. Formation of Subantarctic Mode Water (SAMW) is confirmed, with a deep reservoir of SAMW persisting nearly a year after formation. Antarctic Intermediate Water (AAIW) is observed around the edges of the plateau, but not present on the plateau, confirming that the waters on the plateau are isolated from deeper Southern Ocean.

摘要

坎贝尔高原是新西兰亚南极地区的主要测深特征，它强烈影响着北部的亚热带锋面（STF）和南部的亚南极锋（SAF）的动力。我们对新西兰的南极洲前线位置，测深仪和水团之间的关系进行了一致的调查。由于STF在高原上向南延伸，坎贝尔高原的西北侧比较温暖。高原和麦格理岭的共同作用使南部非洲武装部队向南和向东行驶，源自南部非洲武装部队的水也位于高原北部。确认形成了亚南极模式水（SAMW），并且SAMW的深层储层在形成后将持续一年左右。在高原边缘周围观察到南极中间水（AAIW），