AuScope GNSS reference stations
Global Navigation Satellite System (GNSS) Continuously Operating Reference Stations (CORS) are installed across Australia as part of the AuScope initiative established under the National Collaboration Research Infrastructure Strategy (NCRIS).
The specific purpose of AuScope is to monitor the geodynamic behaviour of the Earth, such as tectonic plate deformation and sea level change, and to significantly improve the accuracy and precision of Australia's geodetic datum.
The GNSS component of the AuScope initiative focuses on increasing the density of GNSS CORS across the country, which includes the installation of 10 reference stations in Victoria. These stations contribute to the Australian Regional GNSS Network (ARGN) operated by Geoscience Australia, which serves as the national foundation for all positioning applications in Australia.
Prior to the AuScope project there was one ARGN GNSS CORS station located at the Melbourne Observatory. This site continues to operate and contribute data to the ARGN.
There are 10 operational AusScope sites in Victoria. The sites are located in Bairnsdale, Beechworth, Nhill, Bald Rock, Mt Emu, Stony Point, Portland, Marengo, Yanakie and Gabo Island.
The Portland and Stony Point reference stations are located adjacent to two of three fundamental tide gauges in Victoria. These sites are directly linked to a tide gauge to assist in national sea level monitoring studies. The Portland site is a 13-metre-deep pile driven into the sea floor. The Nhill, Stony Point, Marengo and Yanakie reference stations are reinforced pillars connected to eight-metre-deep concrete bored piles. The Mt Emu, Bald Rock, Beechworth, Bairnsdale and Gabo Island sites are extremely stable pillar monuments built on stable granite rock outcrops.