AndreaBozzo/ceres-open-data-index huggingface dataset:
SW Canning Basin (La Grange, Munro, Mandora), WA, 1989 (P550), magnetic line data, AWAGS levelled

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 SW Canning Basin (La Grange, Munro, Mandora), WA, 1989 survey were acquired in 1989 by the WA Government, and consisted of 37055 line-kilometres of data at 1500m line spacing and 150m 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, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 550, vector
Organization: Geoscience Australia Data
Duyfken Point 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-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Towards an Australian groundwater quality assessment program

Society increasingly demands that resource management decisions reflect ecological sustainability criteria. The current strain on the global environment makes it essential that environmental factors are considered along-side economic and social factors. This places increased emphasis on resource management as opposed to resource exploitation.  Parallel to this trend is the requirement that Government policies and programs be more accountable; politically, economically and socially.  This is leading, within Australia, to the use of rigorous performance indicators, as measures of the success of management practices.  Australia, through various natural resource agencies, is moving towards more sustainable water resources management. The knowledge and information requirements to support these initiatives are, at present, ill-defined, but are likely to prove formidable.  This means that public policy relating to water resources management will be framed with inadequate scientific information.  The Australian Geological Survey Organisation is developing an Australian Groundwater Quality Assessment Program, within the framework of the National Landcare Program and as part of the National Water Quality Management Strategy.  This Program will seek to cooperatively meet the information needs of the Strategy by a number of survey and research studies.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Lawn Hill Gravity Survey p201840 GDA94HTM

Digital Elevation data record the terrain height variations from the processed point-located data recorded during a geophysical survey. This Lawn Hill Gravity Survey p201840 GDA94HTM is elevation data for the Lawn Hill Gravity Survey 2018 (P201840). This survey was acquired under the project No. 201840 for the geological survey of QLD. The grid has a cell size of 0.00185 degrees (approximately 200m).  This grid contains the ground elevation relative to the ellipsoid for the Lawn Hill Gravity Survey 2018 (P201840). It represents the vertical distance from a location on the Earth's surface to the ellipsoid. 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, Published_External, QLD, digital data, ellipsoid, geophysical survey, geophysics, grid, raster, survey 201840, terrain
Organization: Geoscience Australia Data
North West Shelf Panorama Biozonation and Stratigraphy Chart No. 8

Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

Tags: Chart, Earth Sciences, GA Publication, Published_External, stratigraphy
Organization: Geoscience Australia Data
Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) - New South Wales Time Series data release

The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) is a collaborative national survey that acquires long-period magnetotelluric (MT) data on a half-degree grid spacing across Australia. This national scale survey aims to map the electrical conductivity/resistivity structure in the crust and mantle beneath the Australian continent, which provides significant additional information about Australia’s geodynamic framework as well as valuable pre-competitive data for resource exploration.
Geoscience Australia in collaboration with the Geological Survey of New South Wales (GSNSW) has completed AusLAMP data acquisition at 321 sites across the state of NSW. The data were acquired using LEMI-424 instruments and were processed using the Lemigraph software. The processed data in EDI format and report of field acquisition, data QA/QC, and data processing have been released in 2020 (https://pid.geoscience.gov.au/dataset/ga/132148).
This data release includes acquired time series data and metadata for each site. The script used to package the time series data is provided. The time series data are available in their original format (.txt), as recorded by the data logger, as well as in MTH5 hierarchical format. The open-source MTH5 Python package (https://github.com/kujaku11/mth5) was used to convert the recorded data to MTH5 format.
We acknowledge the traditional landowners, private landholders and national park authorities within the survey region, without whose cooperation these data could not have been collected. 
Data is available on request from clientservices@ga.gov.au - Quote eCat# 148544

Tags: AusLAMP, Electrical and Electromagnetic Methods in Geophysics, Published_External, Time Series, electromagnetic, magnetotellurics
Organization: Geoscience Australia Data
Kildurk 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
Eromanga NE, NT, 2001 (P1020), 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 Eromanga NE, NT, 2001 (P1020), radiometric line data, AWAGS levelled were acquired in 2001 by the NT Government, and consisted of 134493 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, NT, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 1020, thorium, uranium, vector
Organization: Geoscience Australia Data
West Wyalong 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 0.0001 degrees (approximately 11m) and shows potassium element concentration of the West Wyalong Detail, NSW, 1998 in units of percent (or %). The data used to produce this grid was acquired in 1998 by the NSW Government, and consisted of 7819 line-kilometres of data at a line spacing between 50m and 100m, and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NCI, NSW, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, spectrometry, survey 697
Organization: Geoscience Australia Data
Supergene gold deposits

Most gold deposits in terrains dominated by deep regolith have weathered mineralisation and/or supergene enrichment zones. Deposits having significant lateritic andlor saprolitic reserves include: Boddington, Mt Gibson, Plutonic, Mt McClure, Granny Smith,Sunrise Dam, Paddington, Panglo, Mt Percy, (Western Australia); Redback, Jims Find, (Northern Territory); Urn Nabardi, (Sudan); Syama, (Mali).  Supergene gold in palaeochannel sediments and underlying saprolite: Kanowna, Lady Bountiful Extended, Challenge-Swordsman, (Western Australia),

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Tasmania Offshore B, TAS, 1994 (P630), magnetic line data, AWAGS levelled

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 Tasmania Offshore, TAS, 1994 survey were acquired in 1994 by the TAS Government, and consisted of 93301 line-kilometres of data at a line spacing between 400m and 400m, and 130m 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, Published_External, TAS, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 630, vector
Organization: Geoscience Australia Data
Gypsum Creek Detailed Gravity Survey, Qld 1997 - CR29641 - EPM10282 (P199743), 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 Gypsum Creek Detailed Gravity Survey, Qld 1997 - CR29641 - EPM10282 (P199743) contains a total of 450 point data values acquired at a spacing of 500 metres. The data is located in QLD and were acquired in 1997, under project No. 199743 for Wiluna Mines Ltd.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199743
Organization: Geoscience Australia Data
Victoria River Downs 1 200, NT, 1998 (P1004), magnetic line data, AWAGS levelled

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 Victoria River Downs, NT, 1998 survey were acquired in 1998 by the NT Government, and consisted of 90466 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, NT, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 1004, vector
Organization: Geoscience Australia Data
Billiluna, Anna Pl, Port Hedland Gravity (P195605), 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 Billiluna, Anna Pl, Port Hedland Gravity (P195605) contains a total of 1 point data values acquired at a spacing of None metres. The data is located in WA and were acquired in 1956, under project No. 195605 for Bureau of Mineral Resources (BMR).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, WA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 195605
Organization: Geoscience Australia Data
Water levels, balance, and chemistry of Lake George, New South Wales

The marked water-level fluctuations of Lake George, a closed lake in southern New South Wales, have long been a subject of speculation. Monitoring over a 20-year period (1958-77) shows that the fluctuations are a response to seasonal and long-term variations in rainfall, evaporation and inflow of streams. An approximate water balance for the lake has been computed and shows marked seasonal characteristics; increases in water volume between May and October correspond with high inflows and low evaporation, while decreases in water volume between November and April correspond with low inflows and high evaporation. The long-term fluctuations reflect climatic variability. Salinity of the lake water, which is a sodium chloride type, varies inversely with water volume. A substantial net loss in salt was observed during a recessive phase of the lake in 1973.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Holroyd (sd54-11)

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
The Magnitude and Frequency of Combined Flow Bed Shear Stress as a Measure of Exposure on the Australian Continental Shelf

Benthic habitats on the continental shelf are strongly influenced by exposure to the effects of surface ocean waves, and tidal, wind and density driven ocean currents. These processes combine to induce a combined flow bed shear stress upon the seabed which can mobilise sediments or directly influence organisms disturbing the benthic environment. Output from a suite of numerical models predicting these oceanic processes have been utilised to compute the combined flow bed shear stresses over the entire Australian continental shelf for an 8-year period (March 1997- February 2005 inclusive). To quantify the relative influence of extreme or catastrophic combined flow bed shear stress events and more frequent events of smaller magnitude, three methods of classifying the oceanographic levels of exposure are presented: 

A spectral regionalisation method, 
A method based on the shape of the probability distribution function, and 
A method which assesses the balance between the amount of work a stress does on the seabed, and the frequency with which it occurs. 

Significant relationships occur between the three regionalisation maps indicating seabed exposure to oceanographic processes and physical sediment properties (mean grain size and bulk carbonate content), and water depth, particularly when distinction is made between regions dominated by high-frequency (diurnal or semi-diurnal) events and low-frequency (synoptic or annual) events. It is concluded that both magnitude and frequency of combined-flow bed shear stresses must be considered when characterising the benthic environment. The regionalisation outputs of the Australian continental shelf presented in this study are expected to be of benefit to quantifying exposure of seabed habitats on the continental shelf to oceanographic processes in future habitat classification schemes for marine planning and policy procedures.

Tags: AU, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, continental margins, model
Organization: Geoscience Australia Data
Shore Safety Brochure

Why do cliffs and overhangs drop rocks?
Cliffs are formed and wear away by erosion. Water and wind blast the rock with solid particles, waves pound the cliffs, and water dissolves minerals in the rocks.
As the cliffs wear away, they form overhangs that weaken, break and fall suddenly.
Rocks can also fall off cliffs if water or tree roots enter cracks behind the cliff face.
On 27 September 1996, people were sheltering under an overhang in a limestone cliff near Gracetown, Western Australia. The overhang and part of the cliff behind collapsed, and about 2500 tonne of rock and sand fell. Nine people were killed and three others injured. The collapse was partly attributed to the rock absorbing water and becoming heavier.
Remember, it is natural for rocks to fall off cliffs!

Tags: Earth Sciences, GA Publication, Other Publication, Published_External
Organization: Geoscience Australia Data
GSNSW Batemans Bay Narooma magnetic first vd grid geodetic

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.
This GSNSW Batemans Bay Narooma magnetic first vd grid geodetic is a first vertical derivative of the Total Magnetic Intensity grid for the Batemans Bay-Narooma, NSW, 1998.
This grid has a cell size of 0.00049 degrees (approximately 50m). The grid has units of nanoTesla per km (or nT/km). The data used to produce the TMI grid was acquired in 1998 by the NSW Government, and consisted of 7792 line-kilometres of data at 250m line spacing and 60m terrain clearance. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.

Tags: 1vd, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NSW, Published_External, airborne digital data, first vertical derivative, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 746
Organization: Geoscience Australia Data
Daly River 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