Sustained monitoring of the EAC: mass, heat and freshwater transports

Recovery and re-deployment of the East Australian Current (EAC) mooring array.
Voyage No


09 Sep, 2019


29 Sep, 2019




Chief Scientist

Dr Bernadette Sloyan



Voyage Summary

Research voyage from the continental slope to the abyssal waters off Brisbane to recover and re-deploy an array of six moorings in the East Australian Current (EAC). The EAC mooring array is a component of the Integrated Marine Observing System (IMOS). 

The East Australian Current (EAC), a southward flow off eastern Australia, is one of the major global western boundary currents. The EAC is the dominant mechanism for the redistribution of heat and freshwater between the ocean and atmosphere in the Australian region; it is a vital component of the eastern Australian coastal ecosystem.

The EAC mooring array monitors the mass, heat and freshwater transported by the EAC, which is central to our understanding of how climate signals are communicated through the ocean. Moorings are deployed in water depths from approximately 500 m to 5000 m.

The voyage also includes the following research project:

  • Dynamics of larval fish diversity for ocean observing off North Stradbroke Island (Prof Iain Suthers, UNSW): Plankton and larval fish will be surveyed to better understand biodiversity and factors that influence productivity in continental shelf waters.
  • Argo float deployments (Dr Peter Oke, CSIRO): Four Argo floats will be deployed during the voyage as part of the international Argo program.

The science team on this voyage includes 31 participants from four institutions. The voyage is part of a multi-year project in support of IMOS.

Voyage outcomes

Summary of voyage outcomes - as well as voyage image gallery - will be published approximately one month after completion of the voyage.