AndreaBozzo/ceres-open-data-index huggingface dataset:
Stochastic ground-motion prediction equations for southeastern Australian earthquakes using updated source and attenuation parameters

Stochastic finite-fault ground-motion prediction equations (GMPEs) are developed for the stable continental region of southeastern Australia (SEA). The models are based on reinterpreted source and attenuation parameters for small-to-moderate magnitude local earthquakes and a dataset augmented with ground-motion records from recent well-recorded moderate-magnitude earthquakes relative to those used in prior studies (Allen et al., 2007).  The models are applicable for median horizontal-component ground-motions for earthquakes 4.0 &lt;= MW &lt;= 7.5 and at rupture distances less than 400 km. 
Careful analysis of well-constrained Brune stress drops indicates a dependence on hypocentral depth. It is speculated that this is the effect of an increasing crustal stress profile with depth. However, rather than a continuous increase, the change in stress drop appears to indicate a discrete step near 10 km depth. Average Brune stress drops for SEA earthquakes shallower and deeper than 10 km are estimated to be 23 MPa and 50 MPa, respectively. These stress parameters are subsequently input into the stochastic ground-motion simulations for the development of two discrete GMPEs for shallow and deep events.
The GMPEs developed estimate response spectral accelerations similar to the Atkinson and Boore (2006) GMPE for eastern North America (ENA) at short rupture distances (less than approximately 100 km). However, owing to higher attenuation observed in the SEA crust (Allen and Atkinson, 2007), the SEA GMPEs estimate lower ground-motions than ENA models at larger distances.  These differences become most obvious at distances greater than 200 km.
A correlation between measured near-surface shear-wave velocity (VS30) and the site-dependent diminution term (K0) was developed from the limited data available to determine the average site condition to which the GMPEs are applicable.  Assuming the correlation holds, a VS30 of approximately 820 m/s is obtained assuming an average path-independent diminution term K0 of 0.006 s from SEA seismic stations.  Consequently, the GMPE presented herein can be assumed to be appropriate for rock sites of B to BC site class in the modified National Earthquake Hazards Reduction Program (Wills et al., 2000; Building Seismic Safety Council, 2003) site classification scheme.
The response spectral models are compared against moderate-magnitude (4.0 &lt;= MW &lt;= 5.3) earthquakes from eastern Australia. Overall the SEA GMPEs show low median residuals across the full range of spectral period and distance. In contrast, ENA models tend to overestimate response spectra at larger distances. Because of these differences, the present analysis justifies the need to develop Australian-specific GMPEs where ground-motion hazard from a distant seismic source may become important.

Tags: Earth Sciences, GA Publication, Published_External, Record, earthquakes, geohazards
Organization: Geoscience Australia Data
Morris 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_WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Kahrban 1:100 000 unpublished topographic map

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

Tags: 100K unpublished, AU-WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Arafura Sea, NT, 1988 (P560), 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 Arafura Sea, NT, 1988 survey were acquired in 1988 by the NT Government, and consisted of 31761 line-kilometres of data at a line spacing between 2000m and 2000m, and 300m 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 560, vector
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sk51-10)

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
GSWA Holleton North totalcount grid geodetic

This GSWA Holleton North totalcount grid geodetic is an airborne-derived radiometric total count window countrate grid for the Holleton North, WA, 1997 survey. 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 total count (K), total count (U) and total count (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 GSWA Holleton North totalcount grid geodetic has a cell size of 0.001 degrees (approximately 103m). The data are in units of counts per second (cps). The data used to produce this grid was acquired in 1997 by the WA Government, and consisted of 4255 line-kilometres of data at 400m line spacing and 40m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, Published_External, TC, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1077, total count, window countrate
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (si48-08)

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
SI 1011 Mavis Reef (East), Bonaparte Archipelago, (HIPP) Bathymetry Acquisition (20200019S)

The Mavis Reef bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the M/V Warrego during the period 08 January – 09 August 2021. This was a contracted survey conducted by Neptune Marine Services under the HydroScheme Industry Partnership Program (HIPP). The survey area is located east of Mavis Reef, at the southern extent of the Bonaparte Archipelago, offshore northwestern Australia. Bathymetry data were acquired using a R2Sonic 2024 multibeam sonar system and processed using QPS Qimera V2.0.1 and exported to GeoTIFF using CARIS HIPS and SIPS software. This dataset contains a 30m-resolution 32-bit floating point GeoTIFF file of the bathymetry in the survey area.  This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Bathymetric grids, Bathymetry, EARTH SCIENCES, HVC_144641, Marine, Multibeam, Published_External
Organization: Geoscience Australia Data
Darwin Harbour Habitat Mapping Program: Predicted standard error for interpolated surface of predicted surface of Total Sediment Metabolism

This resource contains a predicted total sediment metabolism standard error 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 total sediment metabolism standard error 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
Cambridge Gulf 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_WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
The 2003 Yarragadee Moblas 5 local tie survey

The combination of Space Geodetic techniques is fundamental to the definition of the International Terrestrial Reference Frame (ITRF). An integral component of this combination is the accurately measured and expressed connection between the different space geodetic techniques, commonly referred to as the local tie.  Our ambition is to observe each local tie at an accuracy level of 1-2 mm.
The Yarragadee (Moblas 5) Satellite Laser Ranging (SLR) observatory, located in Western Australia, is co-located with permanent GPS, DORIS and GLONASS systems.  A local tie survey at Yarragadee was completed over four days, the 24th to 27th November 2003, by specialist Geoscience Australia geodetic surveyors using precision classical geodetic observations and geodetic GPS observations.  The purpose of this survey was to repeat the determination of the relationship between each of the observing techniques to the surrounding survey control.  This survey also connected the new DORIS antenna position, YASB 50107S011, into the existing control, along with its pillar reference point, YASM 50107M007.  This type of local tie survey has previously been undertaken at Yarragadee in 1992, 1999 and 2001.  
The 2003 survey results are compared with those observed at Yarragadee in 1999 and 2001.  The results indicate a significant movement vertically, 4 to 5 mm, at RM3 and YAR2 50107M004 between the 1999 survey and the 2003 survey.  The motion is not present to the same extent between the 2001 and 2003 surveys, indicating the displacement took place between the 1999 and 2001 surveys.

Tags: AEM, AU-WA, Earth Sciences, GA Publication, Published_External, Record, geodesy
Organization: Geoscience Australia Data
Contract Helicopter Gravity (P196611), 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 Contract Helicopter Gravity (P196611) contains a total of 883 point data values acquired at a spacing between 5000 and 20000 metres. The data is located in QLD and were acquired in 1966, under project No. 196611 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 196611
Organization: Geoscience Australia Data
GSV Cavendish Vic pot tho ura totg 4band radiometric grid geodetic

This GSV Cavendish Vic pot tho ura totg 4band radiometric grid geodetic is an airborne-derived radiometric Potassium, Thorium and Uranium data over a sun shaded total count radiometric data for the Cavendish, Vic, 1989 (GSV0363). 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 uranium (K), uranium (U) and uranium (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 GSV Cavendish Vic pot tho ura totg 4band radiometric grid geodetic has a cell size of 0.0005 degrees (approximately 49m). The data used to produce this grid was acquired in 1989 by the VIC Government, and consisted of 4532 line-kilometres of data at 250m line spacing and 70m terrain clearance. The grid was produced by applying the colours red to the Potassium ground concentration, green to the Thorium concentration and blue to the Uranium concentration. The colours were clipped to a 99% linear scale. These colours were transparent over a shaded Total Count. This clipping will necessarily introduce some artefacts into the ratio grids in areas of very low radioelement concentrations. The 3-band image was superposed on the sun shaded TC grid of the same survey to produce the final image.

Tags: 4-band, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NASVD, NCI, Published_External, TC, Th, U, VIC, airborne digital data, four band, gamma-ray, geophysical survey, geophysics, grid, image, potassium, rad, radiometrics, raster, spectrometry, survey 1521, thorium, total count, uranium, window countrate
Organization: Geoscience Australia Data
GSNSW Exploration NSW Area P Narrabri magnetic rtp 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 magnetic grid has a cell size of 0.00096 degrees (approximately 100m).The data are in nanoTesla (or nT). The data used to produce this grid was acquired in 2000 by the NSW Government, and consisted of 43190 line-kilometres of data at 400m line spacing and 80m 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.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NSW, Published_External, RTP, TMI, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, reduced to the pole, survey 753, total magnetic intensity
Organization: Geoscience Australia Data
Wardang 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
Tasmanian Detailed Gravity (P198752), 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 Tasmanian Detailed Gravity (P198752) contains a total of 357 point data values acquired at a spacing of 100 metres. The data is located in TAS and were acquired in 1987, under project No. 198752 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TAS, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 198752
Organization: Geoscience Australia Data
First national mineral system assessment of Australia's iron oxide copper-gold potential

Output type: Exploring for the Future Extended Abstract

Short abstract: Iron oxide copper-gold (IOCG) deposits are a significant source of copper and gold and can also contain critical minerals that are required for the transition to a low carbon economy and to increase Australia’s security of mineral supply. Given their strategic importance, a national-scale assessment of the mineral potential for IOCG mineral systems in Australia has been undertaken using a hybrid data- and knowledge-driven approach. The national-scale assessment includes the evaluation of the statistical importance of mappable criteria used in previously published regional-scale IOCG models, resulting in the removal of five criteria and the inclusion of four new or revised criteria derived from datasets developed through the Exploring for the Future program. The new mineral potential model successfully predicts the location of 91.7% of known IOCG deposits and occurrences in 8.3% of the area, reducing the exploration search space by 91.7% and highlighting new areas of elevated prospectivity in under-explored regions of Australia. When compared to existing regional-scale mineral potential assessments for IOCG mineral systems published by Geoscience Australia, the new national-scale model demonstrates higher prospectivity in areas with known IOCG deposits and occurrences, while also highlighting new prospective areas for IOCG mineral systems. Areas with assessed high prospectivity but lacking known IOCG mineralisation include parts of the Curnamona, Etheridge and Musgrave provinces, and the Delamerian, Halls Creek and Tanami orogens.
Citation: Cloutier J., et al., 2024. First national mineral system assessment of Australia's iron oxide copper-gold potential. In: Czarnota, K. (ed.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, https://doi.org/10.26186/149357

Tags: Australia’s Resources Framework, Data mining and knowledge discovery, EFTF – Exploring for the Future, Geology, Mineral potential, Published_External, Resource geoscience, iocg, iron oxide copper gold, mineral potential assessment, mineral systems
Organization: Geoscience Australia Data