AndreaBozzo/ceres-open-data-index huggingface dataset:
AUSGeoid98 v.1.0 data files:  (sk57-13)

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 Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places.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
National Geochemical Survey of Australia: Sample Preparation Manual

The National Geochemical Survey of Australia (NGSA) aims to collect samples from 1529 sites located in 1390 catchments (10% of which are sampled in duplicate) covering over 90% of Australia. At each site, two depth ranges are sampled, giving 3058 samples to be processed. Each sample results in 13 individually packaged sub-samples, meaning that 39,754 separate containers will be prepared, labelled, delivered to the laboratories or archived during the sample preparation phase of the project. Any excess fraction in the processing streams is kept for potential future use.
The detailed procedures for preparing the NGSA samples in the laboratory are described with an overview of Quality Assessment/Quality Control and Operational Health and Safety measures also provided.
There are three main parts to the sample preparation protocol.
The first part is the Bulk Sample stream. 
The sample is received from the field, weighed, dried (for a minimum of 48h at 40Â°C) and sieved through a 4.75 mm mesh to remove any foreign material. The sample is then homogenised and split into two halves. One half is sealed and set aside for archiving for future analyses/investigations. The other half is split into sub-samples or aliquots for:
1. laser particle size analysis (LPSA), pH 1:5 (soil:water) and electrical conductivity (EC) 1:5 (soil:water) analysis; and 
2. X-ray diffraction (XRD) analysis. 
The remainder of the bulk material is sieved through a 2mm mesh, and split into two portions (~20% and ~80%), which are processed in the following two streams.
The second part is the Coarse Fraction stream. 
In this stream, the ~20% split of &lt;2 mm sample prepared above is further split to prepare two aliquots for:
- platinum group element (PGEs) analysis; and 
- gold (Au) analysis after aqua regia (AR) leach.
The third part is the Fine Fraction stream.
In this stream, the ~80% split of &lt;2 mm sample prepared above is sifted using small stainless steel riffle splitters.  The sample &lt;75 um fraction is split into 5 different aliquots (splits) for different analyses. These aliquots are ranked in order of decreasing priority.

Tags: AU, Earth Sciences, GA Publication, Published_External, Record, geochemistry, mineral exploration, regolith
Organization: Geoscience Australia Data
Roebourne 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
Map Reading guide: How to Use Topographic Maps Edition 4

The Map Reading Guide is an ideal resource for a wide range of map users and is an excellent and simplistic introduction to topographic maps which are suitable for anyone with an interest in maps. It contains:

an explanation of what is a topographic map 
steps on how to read topographic maps, including explanations of map scale and how to use a map scale to calculate distance
the differences between grid north, true north and magnetic north
an explanation of projections and symbols used on topographic maps
how hills and mountains are shown on maps using relief shading, hypsometric tinting, and contours
what a datum is and why there are different datum
explanations of the difference between geographic and grid coordinates 
how to quote grid references from topographic maps 
how to plan a successful trip using topographic maps
using Global Navigation Satellite System (GNSS) receivers and magnetic compasses with topographic maps 
using a topographic map to find your current position and to set a course. 

This product is the guide/map romer card combination.

Tags: Earth Sciences, Educational Product, Geoscience Education, Other, Published_External
Organization: Geoscience Australia Data
Burgorah 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-QLD, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Bon Bon/Eba 1:100,000 regolith-landform map CRC LEME

The Bon Bon/Eba 1:100,000 regolith-landform map illustrates the distribution of regolith materials described using the RTMAP scheme developed by Geoscience Australia

Tags: 100K scale, AU-SA, Geological Map, Geology, Published_External, landforms, regolith
Organization: Geoscience Australia Data
Robe 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-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Marine Noise in the Southern Ocean

Marine noise is a form of ocean pollution that may affect fauna ranging from tiny zooplankton to enormous whales. It may interfere with their acoustic sensing of the ocean environment and communication; disrupt behaviour and displace animals; unbalance energy demand and uptake; in extreme cases, cause injury and trauma; and ultimately impact health and survival. The Southern Ocean is not immune to marine noise and its impacts; however, very few studies on bioacoustic impacts have been undertaken on Antarctic species in the Southern Ocean. Here, we present an overview of sources of marine noise in the Southern Ocean, its potential impacts, mitigation options, as well as management and research needs. 
This brief review was written for the Antarctic Environments Portal and is based on an earlier unreleased report submitted to the Scientific Committee on Antarctic Research .

Tags: Marine Geoscience, Marine and Estuarine Ecology (incl. Marine Ichthyology), Published_External, bioacoustic impact, marine noise, noise regulation, seismic airguns, ship noise
Organization: Geoscience Australia Data
Imbumbunna 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-NT, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Thevenard 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-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Magnetotelluric profiles in the McArthur Basin of Northern Australia

Magnetotelluric techniques have been used to investigate structural trends in the McArthur Basin . Observations were made at 34 sites, extending 450 km across the Wearyan Shelf, the Batten Fault Zone, and the Bauhinia Shelf. For sites on the Wearyan Shelf, the orthogonal components of resistivity are generally similar, suggesting continuous horizontal strata and uniform basement depths. However, lateral changes in resistivity, evident on the Bauhinia Shelf, become extreme in the Batten Trough. For sites near the Emu Fault, the two components diverge at long periods, indicating a major change in structure with a pronounced vertical contact. Resistivities associated with the Tawallah Group appear distinct enough to show that no appreciable thickness of McArthur Group can be present east of the Emu Fault. The data are consistent with geological models based on the assumption that the Batten Trough formed as a syndepositional graben with rapid changes in depositional thickness at the boundary faults.

Tags: Earth Sciences, GA Publication, Journal, NT, Published_External, QLD
Organization: Geoscience Australia Data
Nabberu (South), WA, 1996 (P658), 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 Nabberu (South), WA, 1996 (P658), radiometric line data, AWAGS levelled were acquired in 1996 by the WA Government, and consisted of 24630 line-kilometres of data at 400m line spacing and 80m 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 658, thorium, uranium, vector
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sj57-15)

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
Stones Plains EP112 (P200884), 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 Stones Plains EP112 (P200884) contains a total of 528 point data values acquired at a spacing of 1000 metres. The data is located in NT and were acquired in 2008, under project No. 200884 for Central Petroleum Ltd.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NT, Published_External, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 200884
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sc48)

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
AUSGeoid98 v.1.0 data files:  (sc54-01)

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
Anaconda 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
AUSGeoid98 v.1.0 data files:  (sf56-02)

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
Carbuna 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
Can rank-size 'laws' be used for undiscovered petroleum and mineral assessments?

A number of empirical laws which state that a simple relationship exists between the size and ranking of objects have been used in assessing undiscovered petroleum and minerals resources. The most well known of these, the log-log and log-linear laws, are described and compared with log-normally distributed statistics which I have assumed give a good description of sizes of petroleum and mineral deposits. The log-log law, which states that the log of size of a mineral deposit plots as a straight line against the log of the rank of the deposit sizes, was found to give a fair fit for the bigger deposit sizes, but the smaller sizes would be over-estimated. The log-linear law which states that the log of size of a deposit plots as a straight line against the rank of the deposit sizes was found to give a poor fit for both the big and small sizes. The log-log law may be useful for assessing undiscovered resources where geological analogues exist and the largest deposit can be assessed by other means.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Carlotta Brook 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
Gambier 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-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data