AndreaBozzo/ceres-open-data-index huggingface dataset:
Integrating uncertainty estimation practices in SHRIMP and LA-ICP-MS U-Pb geochronology

The EARTHTIME initiative has enabled improvements in high-precision ID-TIMS U-Pb geochronology, demonstrating SI-traceable calibrations with rigorous uncertainty estimation. In a similar fashion, the LA-ICP-MS U-Pb community have reassessed their uncertainty estimation and workflow to try to harmonise better practice in quantification and interpretation across the community. The SHRIMP community has a current imperative to rewrite its data handling software providing an opportunity to review ion-microprobe U-Pb workflow and uncertainty estimation methods. This work will provide the perfect platform to integrate SHRIMP U-Pb dating practices with more recent data handling approaches to ensure harmony and comparability of output between SHRIMP, LA-ICP-MS and ID-TIMS methods.
SHRIMP and LA-ICP-MS data acquisition and processing appear to be very similar. Both methods are relative techniques, requiring calibration to matrix-matched primary reference materials analysed under the same conditions at the same time. Measurement uncertainties are similar, calibration requirements are similar and potential system drift has similar effects and impact on data and concomitant uncertainty estimation. For these and other reasons, we are interrogating SHRIMP and recently published LA-ICP-MS U-Pb data handling workflows to compare approaches, learn mutual lessons, and understand the uncertainty propagation requirements of each method such that a complete understanding of the comparability of U-Pb data obtained by the two methods can be ascertained. We will highlight results to date in describing the SHRIMP and LA-ICP-MS U-Pb data handling workflows in tandem allowing data comparison between the two methods to be properly quantified thereby enabling direct quantification and comparison with ID-TIMS reported ages. In this way, U-Pb geochronology will be a more rigorously applied tool from the highest spatial resolution to highest precision, expanding and building on the EARTHTIME initiative to date.
This abstract was submitted to/presented at the 2017 Goldschmidt Conference 
(https://goldschmidt.info/2017/)

Tags: EARTH SCIENCES, Geochronology, Published_External, SHRIMP, u-Pb
Organization: Geoscience Australia Data
Australia's Maritime Jurisdiction North of 25Â°176S

Map showing all of Australia's Maritime Jurisdiction north of approx 25Â°S .  This includes areas around Cocos (Keeling) Islands and areas west of Christmas Island as well as those contiguous to the continent in the north. 
Included as one of the now 28 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).
Depicting Australia's extended continental shelf approved by the Commission on the Limits of the Continental Shelf in April 2008, treaties and various maritime zones.  Background bathymetry image is derived from a combination of the 2009 9 arc second bathymetry and topographic grid by Geoscience Australia and a grid by W.H.F. Smith and D.T. Sandwell, 1997. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
3277mm x 1050mm (for 42" plotter) sized .pdf downloadable from the web.

Tags: AU-EEZ, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Geoscience Australia Data
White Springs 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
Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography 2024 MapServer

This service represents a combination of two data products, the DEM_SRTM_1Second dataset and the Australian_Bathymetry_Topography dataset. This service was created to support the CO2SAP (Co2 Storage application) Project to create a transect elevation graph within the application.  This data is not available as a dataset for download as a Geoscience Australia product.
The DEM_SRTM_1Second service represents the National Digital Elevation Model (DEM) 1 Second product derived from the National DEM SRTM 1 Second. The DEM represents ground surface topography, with vegetation features removed using an automatic process supported by several vegetation maps. eCat record 72759. 
The Australian_Bathymetry_Topography service describes the bathymetry dataset of the Australian Exclusive Economic Zone and beyond. Bathymetry data was compiled by Geoscience Australia from multibeam and single beam data (derived from multiple sources), Australian Hydrographic Service (AHS) Laser Airborne Depth Sounding (LADS) data, Royal Australian Navy (RAN) fairsheets, the General Bathymetric Chart of the Oceans (GEBCO) bathymetric model, the 2 arc minute ETOPO (Smith and Sandwell, 1997) and 1 arc minute ETOPO satellite derived bathymetry (Amante and Eakins, 2008). Topographic data (onshore data) is based on the revised Australian 0.0025dd topography grid (Geoscience Australia, 2008), the 0.0025dd New Zealand topography grid (Geographx, 2008) and the 90m SRTM DEM (Jarvis et al, 2008). eCat record 67703. 
IMPORTANT INFORMATION For data within this service that lays out of the Australian boundary the following needs to be considered. 
This grid is not suitable for use as an aid to navigation, or to replace any products produced by the Australian Hydrographic Service. Geoscience Australia produces the 0.0025dd bathymetric grid of Australia specifically to provide regional and local broad scale context for scientific and industry projects, and public education. The 0.0025dd grid size is, in many regions of this grid, far in excess of the optimal grid size for some of the input data used. On parts of the continental shelf it may be possible to produce grids at higher resolution, especially where LADS or multibeam surveys exist. However these surveys typically only cover small areas and hence do not warrant the production of a regional scale grid at less than 0.0025dd. There are a number of bathymetric datasets that have not been included in this grid for various reasons.

Tags: 1 Second, Australian, Bathymetry, COSSAP, DEM, Digital, Earth Sciences, MapServer, National, Published_External, SRTM, Topography, depth, elevation, web service
Organization: Geoscience Australia Data
Tolmer 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
Initiating action on TC risks - the Severe Wind Hazard Assessment for South East Queensland

The Severe Wind Hazard Assessment for South East Queensland (SWHA-SEQ) analysed risk from severe wind events in a marginal tropical cyclone (TC) region with a large exposed population, and historical severe thunderstorm and TC impacts. SWHA-SEQ was a collaborative effort bringing together 15 partners across government, academia and the insurance sector to improve the collective understanding of wind risk in the region and inform future strategies to reduce this risk, in the context of climate change, urban planning and socio-economic status of the population. 
The project involved enhancing the understanding of hazard, exposure and physical vulnerability to strengthen the comprehension of risk, including local-scale wind hazard from thunderstorm and TC wind gusts, and a semi-quantitative analysis of future wind hazard. Structural characteristics of residential housing stock were updated through a combination of street surveys, national databases of built assets and insurance portfolio statistics. Vulnerability models for residential houses including retrofitted models for 5 common house types were developed, alongside identification of key vulnerability factors for residential strata buildings.
Local governments are building on the outcomes of the project, with the City of Gold Coast using the project outcomes as the key evidence base for a A$100m investment over 7 years to advocate for uplift of building design criteria, targeted community engagement and resilience of City-owned infrastructure. Other local governments have conducted specific exercises exploring how they would manage a severe TC impact. The investments and activities directly flowing from SWHA-SEQ are testament to the partner engagement through the project.

Presented at the 2024 Symposium on Hurricane Risk in a Changing Climate (SHRCC2024)

Tags: Adverse weather events, Impact, Natural hazards, Published_External, Risk, South East Queensland, Vulnerability, risk, severe wind, tropical cyclone
Organization: Geoscience Australia Data
St George 1:250 000, R502 historical topographic map

The R502 series of maps has been replaced by the National Topographic Map Series (NTMS). The R502 series consists of 542 map sheets and covers Australia at a scale of 1:250,000. It was compiled from aerial photography, but only about one quarter of the series was contoured. The standard sheet size is 1 degree of latitude by 1.5 degrees of longitude. Transverse Mercator map projection and Clark 1858 datum were used. Coverage of the country was completed in 1968.

Tags: 250K scale, AU_QLD, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
SA Detailed Gravity Survey 92B4 (P199274), 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 SA Detailed Gravity Survey 92B4 (P199274) contains a total of 156 point data values acquired at a spacing between 100 and 500 metres. The data is located in SA and were acquired in 1992, under project No. 199274 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, SA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199274
Organization: Geoscience Australia Data
West Arnhem B, NT, 2000 (P1014), 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 West Arnhem, NT, 2000 survey were acquired in 2000 by the NT Government, and consisted of 63333 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 1014, vector
Organization: Geoscience Australia Data
Radiometric Grid of Australia (Radmap) v4 2019 ratio uranium over thorium

The uranium over thorium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia which is a merge of over 600 individual gamma-ray spectrometric surveys. 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 are collected on airborne geophysical surveys conducted by Commonwealth, State and Northern Territory Governments and the private sector.
The 2019 uranium over thorium grid has a cell size of about 100 m (0.001 degrees) and is derived from the filtered uranium and thorium grids.

Tags: 2019, Australia, Earth sciences, GADDS2.0, NCI, Published_External, airborne digital data, geophysics, grid, national geophysical compilation, radiometrics, radmap, raster, ratio, thorium, uranium
Organization: Geoscience Australia Data
GSSA Barton ReducedToPole 1stverticalderivative 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 GSSA Barton ReducedToPole 1stverticalderivative grid geodetic is the first vertical derivative of the TMI RTP grid of the Barton Airborne Magnetic Radiometric and DEM Survey, SA, 2017 survey.
This grid has a cell size of 0.00042 degrees (approximately 43m) , and given in units of nT per metre (nT/m).  The data used to produce the TMI grid was acquired in 2017 by the SA Government, and consisted of 111668 line-kilometres of data at 200m line spacing and 60m terrain clearance. The data has had a variable reduction to the pole applied to centre the magnetic anomaly over the magnetised body. The VRTP processing followed a differential reduction to pole calculation up to 5th order polynomial. Magnetic inclination and declination were derived from the IGRF-11 geomagnetic reference model using a data representative date and elevation representative of the survey. A first vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the TMI RTP grid of the Barton Airborne Magnetic Radiometric and DEM Survey, SA, 2017 survey to produce this grid. This grid was calculated using an algorithm from the INTREPID Geophysics software package. This grid shows the magnetic response of subsurface features with contrasting magnetic susceptibilities. The grid can also be used to locate structural features such as dykes.

Tags: 1VD, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, RTP, SA, TMI, airborne digital data, first vertical derivative, geophysical survey, geophysics, greyscale, grid, image, mag, magnetics, magnetism, palaeomagnetism, reduced to the pole, survey 1284, total magnetic intensity
Organization: Geoscience Australia Data
Kombolgie VTEM AEM Survey: Inversion Report and Data Package

Data acquired as part of the Kombolgie VTEMTM Airborne Electromagnetic Survey have been inverted using a layered earth inversion algorithm.  Interpretation products have been derived from the inversion results.  The inversion results and derived products have been released by Geoscience Australia as a digital data package.
The survey was funded under the Australian Government's Onshore Energy Security Program, and was managed and interpreted by Geoscience Australia's Airborne Electromagnetic Acquisition and Interpretation Project.  The Kombolgie survey area, in the Pine Creek Orogen of the Northern Territory, covered sections of the Cobourg Peninsula, Junction Bay, Alligator River, Milingimbi, Mount Evelyn, Katherine, and Urapunga 1:250 000 map sheets.  It covered a total of 8 800 line km and an area of 32 000 km2.  The data were acquired under contract by Geotech Airborne Pty. Ltd. using its VTEMTM helicopter-borne electromagnetic system.
The inversions were carried out using the GA-LEI layered-earth inversion software developed at Geoscience Australia.  Products include the layer conductivities, depth and elevation slices, and sections.  The products are in digital form in both point-located and gridded formats.  They are available for download from the Geoscience Australia website.

Tags: AEM, Airborne Digital Data, Airborne Electromagnetics, Geophysics, Point Located /Grid, Published_External, geophysics
Organization: Geoscience Australia Data
Piezo-electric quartz

Brazil and Madagascar are the principal sources of the world supply of quartz crystal. During the early years of the war it appeared that the greatly increased demand for military purposes could not be met from these countries; consequently, it became urgently necessary to look for supplies in Australia and elsewhere. By October, 1943, the position had ehanged considerably and it appeared possible that Australian requirements of raw crystal could be met from the Brazilian deposits.

Tags: AU, Bulletin, Earth Sciences, GA Publication, Published_External
Organization: Geoscience Australia Data
Mary Kathleen 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
AUSGeoid98 v.1.0 data files:  (sk50-16)

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
GA GNSS-derived Tropospheric Data Products

Geoscience Australia (GA) provides tropospheric Zenith Total Delay (ZTD) products in near-real-time (hourly) as well as on a daily basis. These delays are derived from Global Navigation Satellite System (GNSS) signals measured at Continuously Operated Reference Sites (CORS) across multiple networks including the Australian Regional GNSS Network (ARGN), the Asia-Pacific Reference Frame (APREF), the South Pacific Regional GNSS Network (SPRGN), and the International GNSS Service (IGS). Data from these continuous stations are accessed from the Australian National Positioning Infrastructure Data Collection.

GA operates as an analysis center of the European Meteorological Services Network (EUMETNET) Economic Interest Group (EIG) GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GA GNSS derived troposphere data products are provided to E-GVAP, Australian Bureau of Meteorology (BoM) and the United Kingdom's Meteorological Office (UK Met Office).


Tags: CRCSI, GNSS, GPS, Geodesy, Global Navigation Satellite Systems, Global Positioning System, HVC_144503, Meteorology, Published_External, Troposphere delay, Weather forecasting, ZTD, Zenith Total Delay
Organization: Geoscience Australia Data
Boydong Island 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
Stavely Project data release 1 - stratigraphic drilling field data

This release presents data collected as part of the collaborative Geoscience Australia-Geological Survey of Victoria Stavely Project. During 2014 fourteen pre-competitive stratigraphic drill holes were completed in the prospective Stavely region in western Victoria in order to better understand subsurface geology and its potential for a variety of mineral systems. The drill holes were completed between April and September 2014 in partnership with the Deep Exploration Technologies Cooperative Research Centre (DET CRC). Data contained within this release were collected in the field at the drill sites, either during or immediately following drilling. Data presented in this release include drill hole collar information, operational metadata and daily drilling reports, drill core photographs, down-hole surveys, down-hole wireline geophysical logging results, down-hole temperature logging results, down-hole AutoSonde(TM) gamma data, Lab-at-Rig (LARÂ®), X-ray fluorescence data, diamond drill core recovery percentages, and handheld magnetic susceptibility measurements on the drill core.

Tags: AU-VIC, Data Package, Geology, Published_External, geochemistry, geology, mineral exploration
Organization: Geoscience Australia Data