AndreaBozzo/ceres-open-data-index huggingface dataset:
Seismology Down Under - Developing Engineering Ground-Motion Databases in Regions of Low Seismicity and Sparse Monitoring Networks

Australia is a continent that is characterised by low seismicity and low seismic hazard relative to many other regions globally.&nbsp;Because of the continent’s perceived low seismic hazard, together with its large expanses and low population exposure, permanent seismic monitoring networks are very sparse.&nbsp;This means that when moderate-to-large magnitude earthquakes occur, they are poorly recorded within distances of engineering significance. Nevertheless, the continent has experienced several moderate-to-large magnitude earthquakes that have been well recorded by modern digital seismic networks and temporary arrays.&nbsp;
This paper describes the compilation of a digital strong- and weak-motion dataset recorded from earthquakes that have occurred in the Australian continental crust. Data are extracted from continuous waveforms recorded by the Australian National Seismograph Network (ANSN), from temporary aftershock deployments, and both private and university networks.&nbsp;Considerable effort has been placed on recovering as much legacy data from significant earthquakes and aftershock sequences as possible.&nbsp;This has led to challenges associated with data recorded using inconsistent formats and sampling rates.&nbsp;Furthermore, accurate station metadata over time remains a key challenge.&nbsp;Where possible, metadata errors have been systematically identified and corrected.
The high-quality data acquired from recent Australian earthquakes now have significant utility to enable more informed choices for the use of ground-motion models for future hazard assessments and will support future empirical and simulated ground-motion studies for the nation, and other stable continental regions more broadly. Underpinning this is the need for a database of uniformly-processed ground motion records from Australian earthquakes coupled with site characterisation information through which recorded data may be referenced and assessed.

Presented at the 2024 18th World Conference on Earthquake Engineering, Milan, Italy

Tags: Australian Ground-Motion Database, Geophysics, Published_External, earthquake hazard, ground-motion attenuation, strong motion
Organization: Geoscience Australia Data
Landsat Barest Earth Data Mosaic of Australia

A `weighted geometric median' approach has been used to estimate the median surface reflectance of the barest state (i.e., least vegetation) observed through Landsat-8 Operational Land Image (OLI) observations from 2013 to September 2018 to generate a six-band Landsat-8 Barest Earth pixel composite mosaic over the Australian continent. The bands include BLUE (0.452 - 0.512), GREEN (0.533 - 0.590), RED, (0.636 - 0.673) NIR (0.851 - 0.879), SWIR1 (1.566 - 1.651) and SWIR2 (2.107 - 2.294) wavelength regions. The weighted median approach is robust to outliers (such as cloud, shadows, saturation, corrupted pixels) and also maintains the relationship between all the spectral wavelengths in the spectra observed through time. The product reduces the influence of vegetation and allows for more direct mapping of soil and rock mineralogy. 
Reference: Dale Roberts, John Wilford, and Omar Ghattas (2018). Revealing the Australian Continent at its Barest, submitted. 
Value: Has broad application in mapping surface geochemistry and mineralogy of exposed soil and bedrock. Has applications in geological mapping and natural resource management including mapping of soil characteristics. 
Scope: Two enhanced bare earth products have been generated reflecting different Landsat satellites and acquisition periods. The first only uses Landsat 8 observations from 2013 to 2018. The second incorporates the full 30+ year archive combining Landsat 5, 7, and 8 from 1986 to 2018.

Tags: Bare Earth, DC2020, EARTH SCIENCES, HVC - High Value Collection, HVC_144632, Imagery Soil, Regolith and Geology, Landsat 8, Landsat TM, Mapping soil and bedrock, Published_External, Remote sensing soil and bedrock, Rock Mineralogy, Soil Mineralogy
Organization: Geoscience Australia Data
Structural evolution of the South Nicholson region: insight from the 2017 L210 reflection seismic survey

The structural evolution of the South Nicholson region is not well understood, hindering full appraisal of the resource potential across the region. Here, we outline new insights from a recent deep-reflection seismic survey, collected as part of the Australian Government’s Exploring for the Future initiative. The new seismic profiles, and new field observations and geochronology, indicate that the South Nicholson region was characterised by episodic development of a series of ENE-trending half grabens. These graben structures experienced two major episodes of extension, at ca. 1725 Ma and ca. 1640 Ma, broadly correlating with extensional events identified from the Lawn Hill Platform and the Mount Isa Province to the east. Southward stratal thickening of both Calvert and Isa Superbasin sequences (Paleoproterozoic Carrara Range and McNamara groups, respectively) into north-dipping bounding faults is consistent with syndepositional extension during half graben formation. Subsequent basin inversion, and reactivation of the half graben bounding faults as south-verging thrusts, appears to have been episodic. The observed geometry and offset are interpreted as the cumulative effect of multiple tectonic events, including the Isan Orogeny, with thrust movement on faults occurring until at least the Paleozoic Alice Springs Orogeny.
Citation: Carson, C.J.. Henson, P.A., Doublier, M.P., Williams, B., Simmons, J., Hutton, L. and Close, D., 2020. Structural evolution of the South Nicholson region: insight from the 2017 L210 reflection seismic survey. In: Czarnota, K., Roach, I., Abbott, S., Haynes, M., Kositcin, N., Ray, A. and Slatter, E. (eds.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, 1–4.

Tags: Basin evolution, Basins, EARTH SCIENCES, EFTF, Exploring For The Future, Published_External, Reflection Seismic L210, South Nicholson Basin
Organization: Geoscience Australia Data
Munkaderry 1:100 000 unpublished topographic map

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

Tags: 100K unpublished, AU-NT, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Guy Fawkes 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
Contention 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
AUSGeoid98 v.1.0 data files:  (sd50-10)

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
Australian Petroleum Systems. Papuan basin module

This module is part of the AGSO-APIRA Australian Petroleum Systems Project. 
Eight basin modules were examined which covered almost the entire North West Shelf, the Petrel Sub-basiTn, as well as the Papuan basin in PNG. 
Two relational databases were established containing the biostratigraphic data (STRATDAT) and reservoir, facies and hydrocarbon shows data (RESFACS). These databases were linked by application programs which allow time series searching using geologically intelligent routines. 
Petroleum systems analyses were conducted on each area, with key results focussing upon the comparison of source quality and timing of generation between similar systems in different areas.

Tags: Earth Sciences, GA Publication, Published_External, Record
Organization: Geoscience Australia Data
Joint GSQ-GA geochronology project: Mount Isa Region, 2008-2009

SHRIMP geochronological results from the Mount Isa and south Nicholson region, Queensland (Table 1; Figure 1). This data was collected through the collaborative GSQ-GA geochronology project in the 2008–09 financial year as part of the National Geoscience Accord (NGA) and in support of ongoing geoscientific investigations and regional geological mapping by the GSQ in the Mount Isa and south Nicholson regions. In addition, an appendix (Appendix A) contains Sm-Nd whole rock analyses of selected samples. The acquisition of the Sm-Nd data in Appendix A was funded wholly by Geoscience Australia. A separate report for each sample is presented, which contain a brief geochronological interpretation as well as information on sample location and geological context.
Three samples were analysed from the South Nicholson Basin from the WESTMORELAND and LAWN HILL 1:250 000 sheet areas, with an additional sample (Westmoreland Conglomerate) taken from the base of the Macarthur Basin. The twelve remaining samples were taken from various units in the greater Mount Isa region from the CLONCURRY, DOBYNN, DUCHESS, MOUNT ISA and URANDANGI 1:250 000 sheet areas. One sample failed to yield sufficient zircons for further investigation (rhyodacitic porphyry from within the Corella Formation). A summary of all processed and analysed samples from this study is presented in Table 1, and sample locations are shown in Figure 1.
Bibliographic Reference: Magee, C.W., Withnall, I.W., Hutton, L.J., Perkins, W.G., Donchak, P.J.T., Parsons, A., Blake, P.R., Sweet, I.P. &amp; Carson C.J., 2012: Joint GSQ–GA geochronology project, Mount Isa Region, 2008–2009. Queensland Geological Record 2012/07.

Tags: Ballara Quartzite, Blaze Creek Gneiss, Burangoo Sandstone, Cloncurry (SF54-2), Detrital zircon populations, Dobbyn (SE54-14), Double Crossing Metamorphics, Duchess (SF54-6), EARTH SCIENCES, Ewen Granite, Geochronology, Hedleys Sandstone, Igneous events, Kalkadoon Granite, Lawn Hill (SE54-9), Mount Isa (SF54-1), Mount Isa Inlier, Oroopo Metabasalt, Paper Tank Microgranite, Published_External, Regional correlations, SHRIMP, Saint-Smith Formation, Sm-Nd isotopes, Staveley Formation, Stratigraphy, Tectonics, Tewinga Gneiss, Tidna Sandstone, Torpedo Creek Quartzite, Urandangi (SF54-5), Westmoreland (SE54-5), Westmoreland Conglomerate, zircon dating
Organization: Geoscience Australia Data
Broken Hill N.S.W, 1994 (P617), 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 Broken Hill N.S.W, 1994 survey were acquired in 1994 by the NSW Government, and consisted of 56310 line-kilometres of data at a line spacing between 100m and 100m, 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, NSW, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 617, vector
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sl55-11)

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
Giles 1:250 000 topographic map

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

Tags: 250K scale, AU-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
South Wangaratta, Vic, 1996 VIMP Survey (GSV3068) (P682), 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 South Wangaratta, Vic, 1996 VIMP Survey (GSV3068) (P682), radiometric line data, AWAGS levelled were acquired in 1996 by the VIC Government, and consisted of 43676 line-kilometres of data at 200m line spacing and 80m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, Published_External, VIC, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 682, thorium, uranium, vector
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sj56-01)

AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.

Tags: AU, AUSGeoid98, Geodesy, Geodetic Data, Published_External, dataset, geodesy
Organization: Geoscience Australia Data
A stream sediment geochemical orientation survey of the Davenport province, Northern Territory

A stream-sediment geochemical orientation survey of the Davenport Province, Northern Territory: Geoscience Australia Journal of Australian Geology and Geophysics, v. 14(1). p 77-95.

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geochemistry
Organization: Geoscience Australia Data
GSV Dargo VIMP Vic pot tho ura totg 4band radiometric grid geodetic

This GSV Dargo VIMP 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 Dargo, Vic, 1996 VIMP Survey (GSV3061). 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 Dargo VIMP Vic pot tho ura totg 4band radiometric grid geodetic has a cell size of 0.0005 degrees (approximately 50m). The data used to produce this grid was acquired in 1995 by the VIC Government, and consisted of 25965 line-kilometres of data at 200m line spacing and 80m 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 690, thorium, total count, uranium, window countrate
Organization: Geoscience Australia Data
Petrel Sub-basin Marine Survey (GA-0335 / SOL5463) (NLECI Program) - Seabed Sediment Grain Size Data

The Petrel Sub-basin Marine Survey GA-0335 (SOL5463) was undertaken on RV Solander during May 2012 as part of the Commonwealth Government's National Low Emission Coal Initiative (NLECI).
The survey was a collaboration between the Australian Institute of Marine Science (AIMS) and GA.  The purpose was to acquire geophysical and biophysical data on shallow (less than 100 m water depth) seabed environments within two targeted areas in the Petrel Sub-basin to support the investigation of CO2 storage potential in these areas. Unconsolidated surface (seabed) sediments were collected at 11 sampling stations using a Smith_McIntyre grab (10L volume).  Sediment samples were collected to provide data on a) sedimentology, b) infauna and c) the geochemical composition of the sediments.
For the sedimentology (this dataset) up to 250 g of sediment was sub-sampled from the surface (0-2 cm) of the sediment recovered in the Smith_McIntyre grabs.  Sub-samples were described from visual inspection, noting grain size, sorting and composition and  these were stored in plastic bags and refrigerated. These were subsequently analysed at the GA laboratories to provide information on the texture and composition of the sediments at the sampling locations. Grain size measurement was undertaken by wet sieving to determine mud (&lt;63 microns), sand (63-2000 microns) and gravel (&gt;2000 microns) fractions as percentage of dry weight. A separate sub-sample (~1g) was used for laser diffraction measurement of the mud and sand fractions using a Malvern Mastersizer 2000, with results expressed as percentage of the total particle volume based on an average of three measurements on each sample. Particle size distributions including mean, median, and standard deviation, together with skewness and kurtosis indices were calculated.  Separate sample splits were taken for measurement of the carbonate content using the carbonate bomb method following Muller and Gastner (1979).

Tags: AU-NT, CO2 capture, Marine Data, Marine Geoscience, Published_External, Sub bottom profiles, marine, seabed, sedimentology
Organization: Geoscience Australia Data