New South Wales Integrated Marine Observing System (NSW-IMOS)
The broad geographical reach of the East Australian Current (EAC) influences the climate and marine economies of nearly half the Australian population, from Brisbane to Sydney, Melbourne, and Hobart. The poleward flowing EAC brings warm water down the New South Wales (NSW) coast modulating the region’s climate as well as the composition, organisation and function of marine ecosystems.
The EAC and the eddy field it produces dominate the marine environment on the narrow, NSW continental shelf. NSW-IMOS’ focus on processes north and south of the separation zone off Coffs Harbour (30ºS) and Sydney (34ºS), with observations at Maria Island (South East Australia IMOS), and at the full depth EAC monitoring mooring off Stradbroke Island (Queensland's IMOS) and Bluewater and Climate IMOS observations also contributing to the understanding of these processes.
The key research aims pertinent to NSW-IMOS are:
- To contribute to national observations of decadal changes and climate variability of the EAC using common platforms and metrics.
- To investigate the EAC, its separation from the coast and the resultant eddy field along the coast of SE Australia.
- To quantify oceanographic processes on the continental shelf and slope off eastern Australia south of the Great Barrier Reef.
- To integrate the ecosystem response with oceanographic processes.
Radar observations prove to be a useful tool for examining frontal eddies along the East Australian Current
A recent paper has used more than a year of high-resolution (1.5 km, hourly) surface velocity measurements from the IMOS HF radar at Coffs Harbour to quantify the propagation of frontal eddies and meanders along the eastern coast...
Marine heatwaves – Surface temperature doesn’t tell the whole story
Marine heatwaves (MHWs) deﬁned as ‘discrete prolonged anomalously warm water events’ and associated mass mortality and habitat shifts are becoming more common with record events occurring around the world. However, little is...
NSW-IMOS announces leadership change
Following a meeting on 11 January, the New South Wales node of IMOS (NSW-IMOS) announced that Justin Seymour, from the University of Technology Sydney (UTS) will take over leadership of the node. Tim Ingleton from the NSW Office...
Glider data provides unprecedented high resolution observations of the continental shelf waters of southeastern Australia
A comprehensive data set collected by IMOS ocean gliders has been published in the Nature journal Scientific Data.
Wobbegongs have more complex social lives than we thought
IMOS Animal tracking observations reveal that groupings of spotted wobbegong sharks, once thought to be chance occurrences, are now believed to reflect far more complex social relationships.
The EAC Array – Revealing the Boundary Current
Data from an IMOS East Australian Current (AEC) array of moorings provide a significant advance in our understanding of the system and begin to expose its complexity.