Shore-based, high frequency (HF) radar systems measure the speed and direction of ocean surface currents in near real time.
As ocean currents transport material (e.g. nutrients, sediment, plastics, etc.), they provide important information for oceanographers. The data are also used for search and rescue operations and mitigation of oil spills. The group hosts the Ocean Radar facility as part of Australia's Integrated Marine Observing System (IMOS) and operates two types of ocean surface radars: phased array (WERA) and direction finding (SeaSonde) at six locations around Australia.