Your access to IMOS Deep Water Mooring data discovery and exploration is through the Australian Ocean Data Network (AODN) Portal.

The data streams available in delayed mode from each of the deep water arrays are velocity (hourly), temperature (5 to 30 minutes), salinity (30 minutes) and from the Polynya array oxygen (hourly). These provide accurate estimates of volume, temperature and salinity transport.

Mertz and Totten Polynya Arrays

The Totten glacier and Polynya moorings were only recovered in January 2015, data from these moorings are being analysed.

Indonesian Throughflow (ITF) Array

The Indonesian Throughflow (ITF) Array will provide long-term observations of the mass, heat and freshwater exchange between the Pacific and Indian Ocean. A better understanding of the ocean pathways from the Pacific to the Indian Ocean requires sustained and detailed observations of the ITF for a long period. Ultimately, seasonal prediction models will have to simulate the transmission reasonably well to get the most societal benefit. The ITF provides the mechanism by which variability associated with ENSO enters Australia’s coastal boundary and subsequently propagates around the western and southern shelves.

All moorings in the Timor Passage are located along a high precision swath line of the TOPEX/Jason satellite altimeter missions. These data will shed light on how best to exploit altimetric data over our shallow northern shelves, especially in data assimilating models.

ITF transport calculated from the ITF moorings

East Australian Current (EAC) Array

EAC - had an excellent data return from the mooring array from first 18 months of data. The initial analysis shows that the mooring design was appropriate and we are able to provide time-series observations of the EAC mass, heat and salt transport. For information on the data quality control please go to

The 18-month (2012-2013) EAC along-slope (a) mean velocity (m s-1) and (b) standard deviation (m s-1). Contour intervals are 0.05 m s-1. Also shown are the positions of the moorings (bold dashed line).