Datasets

National Vegetation Baseline

Native vegetation is a key element contributing to Australia's biodiversity. Across Australia, 23 major native vegetation groups have been identified, which collectively comprise 'tens of thousands of plant species, thousands of vegetation communities and assemblages, and provide habitat to myriads of microorganisms and animal species' (NLWRA 2002b). In general, the extent and distribution of native vegetation across Australia is determined by climatic variation and the physical landscape (i.e. landform, geology and soils).

Catchment Scale Land Use of Australia - currency shapefile package (Esri shapefile)

This dataset is the national compilation of catchment scale land use data for Australia (CLUM), as at December 2020. It is a seamless raster dataset that combines land use data for all state and territory jurisdictions, compiled at a resolution of 50 metres by 50 metres. It has been compiled from vector land use datasets collected as part of state and territory mapping programs through the Australian Collaborative Land Use and Management Program (ACLUMP).

Catchment Scale Land Use of Australia - raster package (gridded data and supporting files)

This dataset is a national compilation of catchment scale land use data for Australia (CLUM). It is a seamless raster dataset that combines land use data for all state and territory jurisdictions, compiled at a resolution of 50 metres by 50 metres. It has been compiled from vector land use datasets collected as part of state and territory mapping programs through the Australian Collaborative Land Use and Management Program (ACLUMP).

AUSPOS - Online GPS Processing Service

AUSPOS is a free online GPS data processing facility provided by Geoscience Australia AUSPOS takes advantage of both The IGS Stations Network and the IGS product range AUSPOS works with data collected anywhere on Earth Users submit their dual frequency geodetic quality GPS RINEX data observed in a 'static' mode to the GPS data processing system An AUSPOS report will be emailed to you (often in less than 5 mins) containing Geocentric Datum of Australia 1994 (GDA94) and International Terrestrial Reference Frame (ITRF) coordinates

Data and Site Logs

Geoscience Australia collects and provides Global Navigation Satellite System (GNSS) data from the Australian Regional GPS Network (ARGN), South Pacific Regional GNSS Network (SPRGN) and the AuScope Network. The GNSS data collected at these sites are made available to the public in the Receiver Independent Exchange (RINEX) and RTCM format. Geoscience Australia also provides navigation data, meteorological data (where available) and site logs. The Geoscience Australia GNSS data archive contains data from 1992 until present.

Regulation 13 Certificates

Regulation 13 Certificates are a legal document which display a station coordinate and the uncertainty of that coordinate. The certificates are generally requested by Continuously Operating Reference Stations (CORS) operators as a means of providing their users with an accurate connection to the Australian Datum - the Geocentric Datum of Australia 1994 (GDA94). Geoscience Australia is appointed as a legal metrology authority under the National Measurement Act, 1960, to provide this legal chain of traceability.

Station Coordinates and Maps

Geoscience Australia routinely computes the station coordinates of sites within the Australian Regional GNSS (Global Navigation Satellite System) Network (ARGN), South Pacific Regional GNSS Network (SPRGN), AuScope Network and the Asia-Pacific Reference Frame (APREF). Weekly station coordinates from these sites can be found on the Geoscience Australia anonymous FTP server in SINEX and PDF format along with a summary file. These weekly solutions are based on a combination of the 7 daily solutions and are aligned to the IGS08 reference frame which is the IGS realization of ITRF2008.

Geodetic Gravity

Geoscience Australia and the Australian National University jointly undertake the geodetic gravity component of the AuScope program, aiming at improving the understanding of the temporal gravity changes across the Australian continent. The geodetic gravity program has two separate outcomes, they are to: use absolute gravimetry as an independent measure for vertical movements of the crust and/or other long-term gravity signals of interest.

Very Long Baseline Interferometry

Geodetic Very Long Baseline Interferometry (VLBI) observations provided the first direct confirmation of tectonic plate motion at the end of the 1980s. Now VLBI observations measure the motions of stations with accuracy better than 1mm/year together with other space geodetic techniques such as Global Positioning System (GPS) and Satellite Laser Ranging (SLR) analysis. VLBI observations to stable distant quasars are an important component for the establishment of a reference system of coordinates in the sky - defining the Celestial Reference Frame.

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