AndreaBozzo/ceres-open-data-index huggingface dataset:
Airborne geophysics in Australia: the government contribution

Airborne geophysical data sets provide important cost-effective information for resource exploration and land management.  Improved techniques, developed recently, now enable high-resolution aeromagnetic and gamma-ray surveys to be used extensively by the resource industries to improve the cost effectiveness of exploration and by governments to encourage resource development and sustainable management of natural resources.  Although airborne geophysical techniques have been used extensively and are now used almost routinely by mineral explorers, it is only in the last few years that governments have been involved as major players in the acquisition of data.  The exploration industry pioneered the imaging of high-resolution airborne geophysical data sets in the early 1980s and, at the same time, the Northern Territory Government started a modest program of flying the Northern Territory, at 500 m flight-line spacing, to attract mineral exploration.  After the start of the National Geoscience Mapping Accord in 1990, the then BMR and its Staterrerritory counterparts used the new high-resolution data as an essential ingredient to underpin mapping programs.  These new data sets proved so valuable that, starting in 1992/93, the annual expenditure by the Commonwealth and the States/Northern Territory increased from roughly $2m per year to a massive $10m per year.  The South Australian Exploration Initiative, which started in 1992, was the first major State initiative.  It was followed by similar programs in Victoria, New South Wales and Queensland.  These investments by governments, although unlikely to be permanently sustainable, have been made to encourage and expand exploration activity by providing new high-quality data sets to industry at very low cost.  There are now approximately 11 million line-km of airborne geophysical data available in databases held by the Commonwealth, States and Northern Territory.  The results so far have seen a significant increase in exploration activity in States that have embarked on this course (e.g. South Australia and Victoria), and the information provided from these surveys is proving crucial to understanding the geology of the continent and for land management issues.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sk50-15)

AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.

Tags: AU, AUSGeoid98, Geodesy, Geodetic Data, Published_External, dataset, geodesy
Organization: Geoscience Australia Data
RETIRED - Sentinel-2 Multispectral Instrument - Nadir BRDF Adjusted Reflectance + Terrain Illumination Correction

This record was retired 02/03/2023 with approval from M. Wilson as it has been superseded by eCat 146552 &amp;  eCat 146551
The Surface Reflectance product has been corrected to account for variations caused by atmospheric properties, sun position and sensor view angle at time of image capture. These corrections have been applied to all satellite imagery in the Sentinel-2 archive. This is undertaken to allow comparison of imagery acquired at different times,in different seasons and in different geographic locations. These products also indicate where the imagery has been affected by cloud or cloud shadow, contains missing data or has been affected in other ways. The Surface Reflectance products are useful as a fundamental starting point for any further analysis, and underpinall other optical derivedDigital Earth Australiaproducts.

Tags: DEA, EGD, NEMO, Published_External
Organization: Geoscience Australia Data
Witchelina, Farina, Tom Hill Detailed Gravity (P198164), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 This Witchelina, Farina, Tom Hill Detailed Gravity (P198164) contains a total of 1128 point data values acquired at a spacing of 450 metres. The data is located in SA and were acquired in 1981, under project No. 198164 for Department of Mines and Energy South Australia (SADME).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, SA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 198164
Organization: Geoscience Australia Data
Byam Martin Island 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Paterson Central, WA, 2005 (P1092), radiometric line data, AWAGS levelled

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 This Paterson Central, WA, 2005 (P1092), radiometric line data, AWAGS levelled were acquired in 2005 by the WA Government, and consisted of 94391 line-kilometres of data at 400m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, Published_External, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 1092, thorium, uranium, vector
Organization: Geoscience Australia Data
Corona Fowlers Gap uranium grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
This radiometric uranium grid has a cell size of 0.00021 degrees (approximately 21m) and shows uranium element concentration of the Fowler's Gap, Corona, NSW, Broken Hill Exploration Init., 1995 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1995 by the NSW Government, and consisted of 47943 line-kilometres of data at a line spacing between 100m and 200m, and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, NSW, Published_External, U, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 642, uranium
Organization: Geoscience Australia Data
Kalkah 1:100 000 topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

Tags: 100K scale, AU-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Five regional field magnetic data sets for Australia

This record describes the set of recent vector magnetic observations available from Project MAGNET flights in the Australian region. It details the derivation from this of a set of 1-min (11 km) averaged values over ocean areas and 6-s (1.1 km) averaged values over land areas which is suitable for use in regional field modelling. Project MAGNET, an aeromagnetic survey of all accessible ocean areas of the world, was commenced by the U.S. Naval Oceanographic Office in 1953 and is still running. Its purpose is to maintain an up-to-dateset of high-altitude (6-10 kin) vector observations for use in geomagnetic field modelling and other geophysical studies. Data from Project MAGNET are made available free of charge through the National Oceanographic and Atmospheric Administration's National Geophysical Data Centre (NGDC) to institutions that contribute to the global pool of geomagnetic data. In addition to global surveying, Project MAGNET also involves special regional surveys. Such a survey was conducted over Australia in 1990 in conjunction with the AWAGSexperiment (Chamalaun and Barton, 1990).

Tags: Earth Sciences, GA Publication, Published_External, Record, magnetics
Organization: Geoscience Australia Data
Exploring for the Future Minerals Roadshow 2020

The Exploring for the Future program Virtual Roadshow was held on 7 July and 14-17 July 2020. The Minerals session of the roadshow was held on 14 July 2020 and consisted of the following presentations:
Introduction - Richard Blewett
Preamble - Karol Kzarnota
Surface &amp; Basins or Cover - Marie-Aude Bonnardot
Crust - Kathryn Waltenberg
Mantle - Marcus Haynes
Zinc on the edge: New insights into sediment-hosted base metals mineral system - David Huston
Scale reduction targeting for Iron-Oxide-Copper-Gold in Tennant Creek and Mt Isa - Anthony Schofield and Andrew Clark
Economic Fairways and Wrap-up - Karol Czarnota

Tags: Basin, Copper, Cover, Crust, EARTH SCIENCES, EFTF, ENVIRONMENTAL SCIENCES, Economic Fairways, Exploring for the Future, Gold, Iron-Oxide, Mantle, Minerals Systems, Mount Isa, Mt Isa, Published_External, Sediment-hosted, Surface, Tennant Creek, Zinc
Organization: Geoscience Australia Data
Disappointed Hill 1:100 000 unpublished topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres.

Tags: 100K unpublished, AU-WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Jaminjung 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-NT, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
National Gravity Compilation 2019 ground elevation geoid image (hillshade HSI)

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This National Gravity Compilation 2019 ground elevation geoid image (hillshade HSI) is elevation of the observation surface for the 2019 Australian National Gravity Grids A series (Lane et al., 2020a) relative to the geoid vertical datum. These data are part of the project No. 202008. The ground surface data were derived from SRTM data with 3 second grid cell size. The grid used to produce this image has a cell size of 0.00417 degrees (approximately 435m). The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, NCI, None, Published_External, SRTM, digital data, geoid, geophysical survey, geophysics, grid, image, national, raster, survey 202008, terrain
Organization: Geoscience Australia Data
Farnham 1:100 000 unpublished topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres.

Tags: 100K unpublished, AU-WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Hyden 1:100 000 topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

Tags: 100K scale, AU-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Tanami NS - magnetic line data (AWAGS)

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 These line dataset from the NTGS Tanami NS Detailed Airborne Magnetic Radiometric and Digital Elevation Survey, NT, 2018 survey were acquired in 2018 by the NT Government, and consisted of 145230 line-kilometres of data at 200m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NT, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 1312, vector
Organization: Geoscience Australia Data
Methodologies for multibeam seabed hardness mapping in the Timor Sea - Hardness Prediction Grids

This dataset contains hardness prediction data from seabed mapping surveys on the Van Diemen Rise in the eastern Joseph Bonaparte Gulf of the Timor Sea. The survey was conducted under a Memorandum of Understanding between Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS) in two consecutive years 2009 (GA survey number GA-0322 and AIMS survey number SOL4934) and 2010 (GA survey number GA-0325 and AIMS survey number SOL5117). The surveys obtained detailed geological (sedimentological, geochemical, geophysical) and biological data (macro-benthic and infaunal diversity, community structure) for the banks, channels and plains to investigate relationships between the physical environment and associated biota for biodiversity prediction. The surveys also provide Arafura-Timor Sea, and wider northern Australian marine region context for the benthic biodiversity of the Van Diemen Rise. Four study areas were investigated across the outer to inner shelf. Refer to the GA record 'Methodologies for seabed substrate characterisation using multibeam bathymetry, backscatter, and video data: A case study for the Eastern Joseph Bonaparte Gulf, Northern Australia' for further information on processing techniques applied (GeoCat: 74092; GA Record: 2013/11).

Tags: AU-NT, Backscatter Grid, Marine Data, Marine Geoscience, NERP, Published_External, backscatter, bathymetry, geoscience, marine, multibeam
Organization: Geoscience Australia Data
MRTAS SW Tasmania percent potassium grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
This radiometric potassium grid has a cell size of 0.00042 degrees (approximately 40m) and shows potassium element concentration of the South West Tasmania, Tas, 2001 (WTRMP Area D) in units of percent (or %). The data used to produce this grid was acquired in 2000 by the TAS Government, and consisted of 13701 line-kilometres of data at 200m line spacing and 80m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NCI, Published_External, TAS, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, spectrometry, survey 824
Organization: Geoscience Australia Data
Australia's Identified Mineral Resources 1995

The Australian mineral industry is an integral part of the domestic economy with $30.3 billion being generated in export earnings in the 1994-95 fiscal year. As in 1993-94, export earnings from minerals in 1994-95 were just over 60% of the earnings from all commodity exports for the year. The Australian Bureau of Agriculture and Resource Economics (ABARE) forecast that earnings from mineral exports will be $34.6 billion in 1995-96. Without Australia's large and diverse mineral resource base such a major contribution to the economy would not have been possible.
Australia ranks as one of the world's leading mineral resource nations. According to estimates published by the United States Bureau of Mines (USBM), Australia is one of the world's top five countries for resources of bauxite, bismuth, cadmium, industrial diamond, gold, mineral sands, lead, lithium, manganese, rare earth oxides, silver, tantalum, and zinc. Australia has the world's fifth largest economic resources of brown coal and the sixth largest of black coal, and has the world's largest low cost uranium resources.
In 1995, Economic Demonstrated Resources (EDR) for gold increased substantially and those for bauxite, ilmenite, rutile, zircon, and nickel increased slightly. There was a significant reduction in the EDR for tin and minor reductions for black coal, iron ore, lithium, magnesite and platinum group metals (PGM).
Exploration expenditure rose again in 1994-95 to reach $893.3 million. Gold was the main target with an expenditure of $554.5 million, which was 62% of all mineral exploration expenditure. Continued high levels of exploration are essential if Australia is to maintain its mineral resource stock to support a sustainable contribution by the sector to the economy.

Tags: AU, Earth Sciences, GA Publication, Published_External, Report, commodities, geoscience, mineral deposits, mineral exploration, resource assessment
Organization: Geoscience Australia Data
Bellalie 2000 Gravity Traverses (P200041), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 This Bellalie 2000 Gravity Traverses (P200041) contains a total of 57 point data values acquired at a spacing of 1000 metres. The data is located in QLD and were acquired in 2000, under project No. 200041 for Geological Survey of Queensland (GSQ).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 200041
Organization: Geoscience Australia Data
Barlee 1:250 000 GIS Dataset

This data is part of the series of maps that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. 
Data is downloadable in various distribution formats.

Tags: 250K scale, AU-WA, Earth Sciences, GIS Dataset, Published_External, dataset, topography
Organization: Geoscience Australia Data