IMOS - ABOS Deepwater Arrays (DA) Sub-facility, East Australian deep water array, East Australian Current 2 Mooring (EAC2) Platform

The EAC2 deepwater mooring was deployed in April 2012 at (-27.30 S, 154.03 E) off the Queensland coast, near Brisbane, Australia. The mooring was recovered in August 2013 and the array decommissioned, and a newly configured array (with new moorings) was redeployed in May 2015. \n\nInstrumentation on the mooring includes Acoustic Doppler Current Profilers (ADCPs): Long Ranger, Sentinel 300 and Quartermaster, Seabird SBE37SMPs, temperature loggers (Star Oddi, Starmon Mini) and discrete current meters (Aquadopp 6000).\n\nThe mooring will collect a time series of full-depth profiles of water velocity and discrete temperature and salinity measurements. \n\nThe array will consist of 9 current meter and property moorings extending eastward from the Queensland Coastal Node shelf mooring array near Brisbane to the deep ocean. The moorings will be at 500-600 m intervals across the Continental Slope and increasing to 800-1000 m in the deep ocean. \n\nThe East Australian Current (EAC) is the major western boundary current of the south Pacific Ocean. It plays a critical role in the ocean re-distribution of global heat from the equator to the midand- high latitudes. The EAC is relatively stable north of Brisbane, but as the current moves south\n2-3 large eddies are pinched off every year. These eddies frequently move onto the continental shelf and close inshore and influence the local circulation patterns. At prominent coastal features the EAC moves away from the coast, driving upwelling which draws nutrient-rich water from a depth of 200-m or more.

EAC2深水锚系于2012年4月部署在澳大利亚昆士兰州布里斯班附近外海的(-27.30°S, 154.03°E)海域。该锚系于2013年8月回收并完成阵列退役拆除，2015年5月重新部署了全新配置的锚系阵列。

该锚系搭载的观测仪器包括声学多普勒流速剖面仪（Acoustic Doppler Current Profilers，ADCPs）：Long Ranger、Sentinel 300及Quartermaster型号，Seabird SBE37SMP，以及温度记录仪（Star Oddi、Starmon Mini型号）与离散式海流计（Aquadopp 6000）。

该锚系将获取全水深流速剖面的时间序列数据，以及离散的温度与盐度观测值。

本次观测阵列包含9套海流与水文要素观测锚系，从布里斯班附近的昆士兰海岸陆架锚系阵列向东延伸至深海海域。跨大陆坡的锚系布设间距为500~600米，深海区域的间距则增至800~1000米。

东澳大利亚海流（East Australian Current，EAC）是南太平洋的主要西边界流，在全球热量从赤道向中高纬度的海洋再分配过程中发挥关键作用。该海流在布里斯班以北海域相对稳定，但向南流动期间每年会形成2~3个大型涡旋。这些涡旋常会侵入大陆架并在近岸区域闭合，进而对局地环流格局产生影响。在具有显著海岸地形的区域，东澳大利亚海流会偏离海岸，引发上升流，将200米以深的富营养海水抽吸至上层水体。