Deployments

The Polynya Array monitors the current and water properties of Antarctic Bottom Water formation in the Mertz and Totten coastal polynyas located on the Antarctic continental shelf. The Mertz Polynya Array was deployed in January 2011 from the Aurora Australis. Heavy sea ice near the Mertz Polynya mooring site in January 2013 prevented the recovery or redeployment of the array.  In February 2014 a second set of Polynya moorings were deployed in a new location near the Totten Glacier. In January 2015 five of the six moorings deployed at Mertz and Totten were recovered. The final mooring was located but was in a position that was too dangerous for the ship to recover it.  

The Indonesian Throughflow (ITF) Array was first deployed from the RV Solander in June 2011. The array consists of one mooring in the Ombai Strait (3225 m) and two moorings in the Timor Passage – the Timor North (1635 m) and the Timor Sill (3301 m). First turnaround of the moorings was completed in September 2012. The mooring is turned around on a roughly annual to 18- month basis.  This array is linked with the Northern Australian Joseph Bonaparte Gulf (JBG) Array which was deployed in June 2010. The JBG array extends across the continental shelf to the 400m isobar (see Queensland and Northern Australia Mooring pages for more details). All moorings in the Timor Passage are located along a high precision swath line of the TOPEX/Jason satellite altimeter missions.

Map of Indonesian Throughflow moorings

The East Australian Current (EAC) Array consists of five deep water moorings that provide a time series of current, temperature and salinity. The Array was first deployed in April 2012 on the continental slope and abyssal waters near Brisbane. In August 2013 EAC mooring array was recovered for the first time. The EAC Array (6 mooring) was redeployed in May 2015 after an eighteen month hiatus. This mooring array is located near the existing long term XBT transect, satellite altimetry and glider tracks and was complemented by the South East Queensland array located in the continental shelf region (see Queensland and Northern Australia Mooring pages for more details) over the first deployment period. The second deployment of the EAC Array was redesigned to incorporate parts of the continental shelf that was previously collected by the SEQ array.

Map of EAC 2015 mooring locations