AndreaBozzo/ceres-open-data-index huggingface dataset:
Pacific Sea Level and Geodetic Monitoring Project Levelling & GNSS Monitoring Survey Reports: Manus Island, Papua New Guinea, March 2019

The Australian Bureau of Meteorology (BoM), Geoscience Australia (GA) and the Pacific Community (SPC) work together on the Australian Aid funded Pacific Sea Level and Geodetic Monitoring Project (PSLGMP). The project is focused on determining the long-term variation in sea level through observation and analysis of changes in the height of the land (using Global Navigation Satellite System (GNSS) data) and changes in the sea level (using tide gauges managed and operated by the BoM. It is the role of GA and SPC to provide information about ‘absolute’ movement of the tide gauge (managed by BoM) using GNSS to continuously monitor land motion and using levelling (SPC) to measure the height difference between the tide gauge and GNSS pillar every 18 months.
Land movement caused by earthquakes, subsidence and surface uplift have an important effect on sea level observations at tide gauges. For example, a tide gauge connected to a pier which is subsiding at a rate of 5 mm per year would be observed as a rate of 5 mm per year of sea level rise at the tide gauge. Because of this, it is important to measure, and account for, the movement of land when measuring ‘absolute’ sea level variation - the change in the sea level relative to the centre of the Earth. Relative sea level variation on the other hand is measured relative to local buildings and landmass around the coastline.
Geoscience Australia’s work enables more accurate 'absolute' sea level estimates by providing observations of land motion which can be accounted for by BoM when analysing the tide gauge data.
This report provides the results of the GNSS monitoring survey &amp; high precision level survey completed between the Sea Level Fine Resolution Acoustic Measuring Equipment (SEAFRAME) tide gauge and the GNSS Continuously Operation Reference Station (CORS) in Manus Island, Papua New Guinea from 25th to 31st March 2019. It also provides an updated ellipsoidal height of the tide gauge derived from GNSS time series analysis and precise levelling observations.

Tags: Geodesy, Pacific, Published_External, geodesy, land motion
Organization: Geoscience Australia Data
Assessing groundwater storage change in the Great Artesian Basin using GRACE and groundwater budgets

Large, confined aquifer systems play a vital role in sustaining human settlements and industries in many regions. Understanding the sustainability of these water resources requires the evaluation of groundwater storage change. Direct in-situ observation of groundwater storage is limited by the distribution and availability of groundwater level and aquifer storativity data. Here, we use and compare two auxiliary methods, applied at basin and sub-basin scales, to assess groundwater storage changes in the Great Artesian Basin (GAB), one of the World’s largest confined aquifer systems. The first, the groundwater budget, derives storage change as the residual of fluxes in and out of the GAB, assuming they are all accounted for and accurately estimated. The second uses time-variable gravity data from GRACE satellites to estimate temporal changes in groundwater mass, assuming that all other components of the terrestrial water mass change detected by GRACE are correctly subtracted. Despite the depletion observed during the 20th century, groundwater storage is mostly stable during 2002-2022. An increase in storage is detected in the Surat sub-basin; a major recharge area. This increase is attributed to an over-representation of large recharge events during the study period and/or storage recovery following rehabilitation of free-flowing bores. The GRACE approach might overestimate the increase in GAB storage by incorrectly attributing storage increase occurring in overlying aquifers to the GAB. In contrast, the recharge estimates used in the groundwater budgets do not account for flood recharge and might underestimate storage increase in the GAB.

Citation: Castellazzi, P., Ransley, T., McPherson, A., Slatter, E., Frost, A., Shokri, A., et al. (2024). Assessing groundwater storage change in the Great Artesian Basin using GRACE and groundwater budgets. Water Resources Research, 60, e2024WR037334. https://doi.org/10.1029/2024WR037334

Tags: Assessing the status of groundwater in the Great Artesian Basin project, Gravity Recovery and Climate Experiment, Great Artesian Basin, Groundwater hydrology, Groundwater resource assessment, Published_External
Organization: Geoscience Australia Data
Australian Resource Reviews: Bauxite 2017

The Australian Resource Reviews are periodic national assessments of individual mineral commodities.  The reviews include evaluations of short-term and long-term trends for each mineral resource, world rankings, production data, significant exploration results and an overview of mining industry developments.

Tags: Earth Sciences, Published_External, alumina, aluminium, bauxite, industry developments, inventory, production, reserves, resources, world rankings
Organization: Geoscience Australia Data
Bardoc 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
AUSGeoid98 v.1.0 data files: (sk54)

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
Application of airborne gamma-ray spectrometry in soil/regolith mapping and applied geomorphology

Gamma-ray spectrometric surveys are an important source of information for soil, regolith and geomorphological studies, as demonstrated by the interpretation of airborne surveys in Western Australia, central New South Wales and north Queensland.  Gamma-rays emitted from the ground surface relate to the primary mineralogy and geochemistry of the bedrock, and the secondary weathered materials.  Weathering modifies the distribution and concentration of radioelements from the original bedrock source.  Once the radioelement response of bedrock and weathered materials is understood, the gamma-ray data can provide information on geomorphic processes and soil/regolith properties, including their mineralogy, texture, chemistry and style of weathering.  This information can contribute significantly to an understanding of the weathering and geomorphic history of a region and, therefore, has the potential to be used in developing more effective land-management strategies and refining geochemical models in support of mineral exploration.  Gamma-ray imagery is enhanced when combined with Landsat TM bands and digital elevation models (DEM).  This synergy enables geochemical information derived from the gamma-ray data to be interpreted within a geomorphic framework.  Draping gamma-ray images over DEMs as 3D landscape perspective views aids interpretation and allows the interpreter to visualise complex relationships between the gamma-ray response and landform features.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Box Hole 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: AU-SA, Orthophoto Map, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Pellinore 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: AU-NT, Orthophoto Map, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Great Artesian Basin Potentiometric Surfaces

These grids represent the potentiometric surface of the Cadna-owie - Hooray Aquifer in the Great Artesian Basin at 20 year intervals from 1900-2010. They were interpolated from GAB water table elevations and from observations of hydraulic head obtained from state groundwater databases. Head measurements were density corrected prior to creation of surfaces. Where there were no temperatures supplied with the head measurement to allow correction, temperature was interpolated from dataset 'Great Artesian Basin groundwater temperature' (Geoscience Australia dataset, Catalogue No. 76929, available from http://www.ga.gov.au).The grid surfaces 1900-1920, ?, 2000-2010 account for the possible effects of geological faults on groundwater flow in the GAB. Grids 1900-1920_nf and 2000-2010_nf are without the influence of regional tectonic faulting.
Null values assigned as 1.000000e+30.  Grid cell size (X, Y) = 5000 m, 5000 m.
This GIS data set and metadata was produced by CSIRO for the Great Artesian Basin Water Resource Assessment and used in figures 7.2, 7.3 and 7.4 of Ransley TR and Smerdon BD (eds) (2012) Hydrostratigraphy, hydrogeology and system conceptualisation of the Great Artesian Basin. A technical report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment. CSIRO Water for a Healthy Country Flagship, Australia.
Projection is Albers equal area conic, with central meridian 143 degrees longitude, standard parallels at -21 and -29 degrees latitude and latitude of projection's origin at -25. 
For more information, contact:
hris Turnadge
Research Projects Officer
CSIRO Land and Water
Waite Road
Urrbrae SA 5064

Tags: AU-NSW, AU-QLD, AU-SA, GIS Dataset, Hydrogeology, Published_External, dataset, groundwater, hydrogeology
Organization: Geoscience Australia Data
Isostatic Residual Gravity Anomaly Grid of Onshore Australia 2016

This grid is derived from gravity observations stored in the Australian National Gravity Database (ANGD) as at February 2016 as well as data from the 2013 New South Wales Riverina gravity survey. Out of the approximately 1.8 million gravity observations 1,371,998 gravity stations in the ANGD together with 19,558 stations from the Riverina survey were used to generate this image. The grid shows isostatic residual gravity anomalies over onshore continental Australia. The data used in this grid has been acquired by the Commonwealth, State and Territory Governments, the mining and exploration industry, universities and research organisations from the 1940's to the present day. 
The isostatic corrections were based on the assumption that topographic loads are compensated at depth by crustal roots following the Airy-Heiskanen isostatic principle. A crustal density of 2670 kg/m3 was used for the isostatic correction, with an assumed density contrast between the crust and mantle of 400 kg/m3. An initial average depth to Moho at sea level of 37 km was used in the calculation. The isostatic corrections were then applied to the Complete Bouguer Gravity Anomaly Grid of Onshore Australia 2016 to produce the Isostatic Residual Gravity Anomaly Grid of Onshore Australia 2016.

Tags: Australia, Earth sciences, GADDS2.0, NCI, Published_External, geophysics, gravity, gravity digital data, grid, isostasy, isostatic anomaly, isostatic correction, isostatic residual, national geophysical compilation
Organization: Geoscience Australia Data
Yurongan South 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
AUSGeoid98 v.1.0 data files: Duketon (sg51-14)

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
Narrandera 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-NSW, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Airborne EM an important exploration method for revealing geological insights into the subsurface

Airborne electromagnetics (AEM) is an important exploration method for revealing geological insights into the subsurface. AEM has proven to be particularly useful for mapping geological structures and has played a significant role in places such as the central parts of Africa, South America and Australia, where approximately 80% of the landscape is covered by regolith, the outcrop is rare and mineral deposits are hidden beneath barren cover. The method’s non-invasive nature and its extensive ground coverage make it a particularly powerful tool at the early stages of green-field exploration.
AEM surveys commissioned by exploration companies for mineral exploration purposes are mostly perceived as 'anomaly detectors'. For further interpretation it is essential to comprehend the main local geological and survey specific factors that influence the electromagnetic response. The aim of any given observation is to understand the procedures and assumptions used to derive models of conductivity and depth from the measured data, and then develop processes to infer geology, lithology and other characteristics of the subsurface from the models which honour the data.
Geophysicists assessing AEM models are often faced with the conundrum of determining how geologically sensible a proposed model is and how it compares too many other possible solutions.  One way is to explore thousands of plausible models that fit the data through stochastic processes. The statistical analysis permits quantification of the degree of uncertainty and a probable distribution of conductivities at depth.
To make the information translatable to other disciplines, it is necessary to processes AEM measurements and integrate them with ancillary information. The combination of data integration and AEM's extensive area coverage enables transfer of local geological understanding to a broader region. Previous work has demonstrated there also is great value in reprocessing legacy data that is often abandoned.
Presented at the 2017 Exploration 17 - Integrating the Geosciences

Tags: Airborne electromagnetics - AEM, EARTH SCIENCES, airborne inductive induced-polarisation, geological mapping, inversion, uncertainty interpretation
Organization: Geoscience Australia Data
Determination of GDA94 coordinates for station CAVL at the Caval Ridge Mine of RPS Australia East Pty Ltd in Queensland using the June 2013 GPS data set

An application dated 01 July 2013 for verification of a reference standard of measurement under Regulation 12 of the National Measurement Regulations 1999 was received from the Caval Ridge Mine of RPS Australia East Pty Ltd in Queensland, for verification of GDA94 position on their owned or managed station monument. This report documents the processing and analysis of GPS data observed by the Caval Ridge Mine during a 7-day period from 23 June 2013 to 29 June 2013 (day of year 174 to 180) for the station CAVL to satisfy the position verification requirements.

Tags: Earth Sciences, GA Publication, Published_External, Record
Organization: Geoscience Australia Data
Darwin Harbour Habitat Mapping Program: Predicted surface Calcium Carbonate content in sediments

This resource contains a predicted calcium carbonate content grid for the greater Darwin Harbour region as part of a baseline seabed mapping program of Darwin Harbour and Bynoe Harbour. This project was funded through offset funds provided by an INPEX-led Ichthys LNG Project to the Northern Territory Government’s Department of Environment and Natural Resources (NTG-DENR) with co-investment from Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS). The intent of this program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps and information to underpin marine resource management decisions. The predicted calcium carbonate content grid was derived from a compilation of multiple surveys undertaken by GA, AIMS and NTG-DENR between 2011 and 2017, including GA0333 (Siwabessy et al., 2015), GA0341 (Siwabessy et al., 2015), GA0351/SOL6187 (Siwabessy et al., 2016), GA4452/SOL6432 (Siwabessy et al., 2017), GA0356 (Radke et al., 2017), and GA0358 and GA0359 (Radke et al., 2018), adding to those from previous surveys GA4425 and GA0333 collected by GA, AIMS, NTG-DENR and Darwin Port Authority.

Tags: Exclusive Economic Zone, Geochemistry, Marine Environmental Baselines, Marine Survey, Published_External
Organization: Geoscience Australia Data
GSWA South Officer 1 Jubilee Thorium 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 thorium grid has a cell size of 0.00042 degrees (approximately 44m) and shows thorium element concentration of the Jubilee, WA, 2010 (South Officer 1) in units of parts per million (or ppm). The data used to produce this grid was acquired in 2010 by the WA Government, and consisted of 184296 line-kilometres of data at 200m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, Published_External, Th, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1225, thorium
Organization: Geoscience Australia Data
East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), ground elevation geoid grid

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), ground elevation geoid grid is elevation data for the East Tasmania Magnetic and Radiometric Survey, 2022. This survey was acquired under the project No. 5020 for the geological survey of TAS. The grid has a cell size of  degrees (approximately 40m).  This grid contains the ground elevation relative to the geoid for the East Tasmania Magnetic and Radiometric Survey, 2022. It represents the vertical distance from a location on the Earth's surface to the geoid. 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, TAS, digital data, geoid, geophysical survey, geophysics, grid, raster, survey 5020, terrain
Organization: Geoscience Australia Data
Mooratherra 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