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Geodetic network measures Earth movements

A radar corner reflector installed near Cecil Plains, in the Darling Downs region of south-east QueenslandAustralia: A new geodetic network installed in the Surat Basin, Queensland, can now measure movement of the Earth's surface more accurately. The regional network, built by Geoscience Australia as part of the AuScope Australian Geophysical Observing System project, comprises a system of geodetic survey marks and co-located radar corner reflectors.

The network measures surface deformation patterns of the Earth's crust across the Surat Basin with millimetre-level precision and centimetre-level accuracy, supported by the combination of two measurement techniques: the Interferometric Synthetic Aperture Radar (InSAR) and GNSS. It is believed that the combination of the InSAR and GNSS geodetic techniques will significantly improve the spatial resolution of surface deformation estimates in the region, enabling mapping of localised surface deformation of the Earth's crust.

Source: GA Gov