IMOS - ABOS Deepwater Arrays (DA) Sub-facility, East Australian deep water array, East Australian Current 3 Mooring (EAC3) Platform

The EAC3 deepwater mooring was deployed in April 2012 at (-27.26 S, 154.29 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 2-3 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.

东澳大利亚海流3号（EAC3）深水锚系于2012年4月部署在澳大利亚昆士兰州海岸外布里斯班附近的(-27.26°S, 154.29°E)海域。该锚系于2013年8月被回收，整套阵列随即撤装，随后一套全新配置的锚系阵列（含全新锚系）于2015年5月重新部署。

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

该锚系将获取全水深海流速度剖面的时间序列，以及离散的温度与盐度测量数据。

该阵列将包含9套海流计与水文要素锚系，从布里斯班附近的昆士兰海岸节点陆架锚系阵列向东延伸至深海海域。锚系在大陆坡区域的布设间隔为500-600米，在深海区域则增至800-1000米。

东澳大利亚海流（East Australian Current，EAC）是南太平洋最主要的西边界流。其在全球热量从赤道向中高纬度的大洋再分配过程中发挥着关键作用。EAC在布里斯班以北海域相对稳定，但当海流向南流动时，每年会分离形成2-3个大型涡旋。这些涡旋常会侵入大陆架并近岸闭合，进而影响局地环流格局。在典型的海岸地形处，EAC会离岸流动，引发上升流，将200米及更深处富含营养盐的海水抽吸至表层。