AndreaBozzo/ceres-open-data-index huggingface dataset:
AUSGeoid98 v.1.0 data files: Meekatharra (sg50)

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 Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places.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
Round Hill 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
Application and extension of the ML earthquake magnitude scale in the Victoria region

A new function for -logAo has been deduced, and parameters determined using nonlinear regression analysis of data from the Victorian seismograph network. The formula for local magnitude supplied within the article has been adopted for the Victoria region. The values of - logAo closely follow the trend of Richters values at medium hypocentral distances. The features of Bakun and Joyners (1984) formula at close range, which were found to be applicable in Victoria, have been retained. The formula is applicable for distances from a few kilometers, and the maximum distance has been extended from 600 to 1000 km.  The value of logS is closely related to the seismometer foundation, varying from about 0.0 at a bedrock site to more than 0.7 at soft sedimentary sites. The determination and application of site corrections is examined in detail.

Tags: Earth Sciences, GA Publication, Journal, Published_External, VIC
Organization: Geoscience Australia Data
GSNSW Marulan Mossvale potassium grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
This radiometric potassium grid has a cell size of 0.00061 degrees (approximately 62m) and shows potassium element concentration of the Marulan-Mossvale, NSW, 1998 in units of percent (or %). The data used to produce this grid was acquired in 1998 by the NSW Government, and consisted of 1886 line-kilometres of data at 250m line spacing and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NCI, NSW, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, spectrometry, survey 747
Organization: Geoscience Australia Data
Muiron 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
Airborne Magnetic and Radiometric Technical Standards - Data Acquisition, Processing and Supply

This document defines the technical standards set by Geoscience Australia for the acquisition, processing and supply of airborne magnetic, horizontal magnetic gradient and radiometric (gamma-ray spectrometric) data. The technical standards cover the requirements for equipment, calibrations, quality control checks, reporting and data formats for airborne surveys.


Table of Contents

Attachment 1A – Data Acquisition and Processing

1    Aircraft
2    Flight and Tie Lines
3    Global Navigation Satellite System (GNSS)
4   Parallax Correction
5 Altimeter
6   Barometer
7   Digital Elevation Model
8 Magnetic System Equipment
9   Magnetic Gradient System Equipment
10 Magnetic / Gradient Calibration and Quality Tolerances
11 Magnetic Base Station (Diurnal Monitoring)
12 Magnetic Data Reduction
13    Magnetic Gradient Data Reduction
14   Radiometric System Equipment
15   Radiometric Calibration and Quality Tolerances
16 Radiometric Data Reduction

Attachment 1B – Reporting and Data Supply

1    General
2 Calibration Report
3  Daily Acquisition Report
4    Weekly Acquisition Report
5   Operations and Processing Summary Report
6    Supply Schedule

Attachment 1C – Data Formats

1    General
2 Point-Located Data Files
3    Definition Files
4    Description Files
5   Raw-Edited Magnetic Data File
6   Reduced Magnetic Data File
7  Diurnal Magnetic Data File
8  Raw-Edited Magnetic Gradient Data File
9  Reduced Magnetic Gradiometry Data File
10 Raw-Edited Radiometric Data File
11   Reduced Radiometric Data File
12  Gridded Data Files
13 Image Enhanced GeoTIFF Files

Tags: Airborne Geophysics, Applied geophysics, Calibration, Data Formats, Gamma-ray Spectrometer, Geophysical Acquisition and Processing Section, Gradiometry, Horizontal Magnetic Gradient, Magnetics, Magnetometer, Published_External, Quality Tolerances, Radiometrics, Reduction, Technical Standards, Total Magnetic Intensity (TMI)
Organization: Geoscience Australia Data
Penola, SA, 1992 (P592), 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 Penola, SA, 1992 survey were acquired in 1992 by the SA Government, and consisted of 14160 line-kilometres of data at 1500m 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, Published_External, SA, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 592, vector
Organization: Geoscience Australia Data
Kamileroi 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
The MinEx Co-operative Research Centre National Drilling Initiative – novel methods and applied geochemistry

MinEx CRC is the world's largest mineral exploration research collaboration, bringing together industry, government and research organisations. The National Drilling Initiative (NDI) is a part of the CRC that brings together government and university geoscience departments from across Australia in the common goal of improving understanding of Australia’s mineral resources. 
The Earth resources sector is a vital part of Australia’s economy, and our future wellbeing demands a continuing pipeline of discovery. The NDI precompetitive stratigraphic drilling campaigns have been conducted in the frontier regions of East Tennant (NT), South Nicholson (NT), Delamerian Orogen (SA and NSW), Paterson (WA) and Eucla (WA), with others to come. Each campaign has provided new rock chip and core samples from key regolith and basement units , some of which have never previously been sampled. New technology developed by NDI researchers and applied to the drilling campaign areas includes the following:

Regolith characterisation has been made easier by new software that produce pseudologs through multivariate analysis of rapid field-acquired geochemical, hyperspectral and    petrophysical data. While developed specifically to aid identification of boundaries in regolith, the method also can be applied to basement stratigraphy. 
New dating methods allow rapid characterisation of stratigraphic, tectonic and alteration events. Microanalytical techniques using laser ablation same-mass isotopes allow a much wider range of minerals to be analysed in their petrogenetic/lithologic/paragenetic contexts – especially important as we study new styles of critical mineral deposits. Diffusion modelling of high precision Ar-Ar plateau spectra allows an extensive thermal history to be revealed from tiny amounts of material. 
New software is being developed to maximise the information gained from chemical and isotopic micro-mapping of samples. This allows better predictions of the mineral potential of a region from the study of just a few uneconomic mineral occurrences, which are often found before major deposits are. 
The collaboration between MinEx CRC researchers and geological surveys has proven very powerful in both trialling new analytical methods, but also to provide a much more rapid, informed geological framework in frontier covered terranes than has previously been possible. Web portals with analytical tools facilitate data delivery to explorers more promptly after drilling, allowing faster investment decision making, which is necessary to keep investment in Australia to support the transition to a low carbon economy.
Presented at the 2024 International Applied Geochemistry Symposium (IAG2024)

Tags: EARTH SCIENCES, GEOCHEMISTRY, National Drilling Initiative
Organization: Geoscience Australia Data
Use MODIS data to investigate the spatial and temporal variability of the Bonney Coast Upwelling

The Bonney Coast upwelling is a large seasonal upwelling system along Australian southern shelves, from Cape Jaffa (SA) to Cape Nelson (VIC), during favourable coastal winds. The Bonney Coast upwelling, with nutrient enriched water, has been recognised as a key ecological feature. During the upwelling season (Austral Summer), swarms of krill and aggregation of blue whales are frequently found in this part of continental shelf. The upwelling is also important in the life cycle of juvenile southern Bluefin tuna and benefits other marine life. The oceanographic characteristics of the Bonney Coast upwelling are well understood through marine surveys and mooring data, as well as satellite images. However, the systematic and accurate mapping and understanding of the dynamic of the upwelling system has not been conducted. This study aims to map and investigate the spatial and temporal variability of the Bonney Coast upwelling using time-series of MODIS data. The data include more than 170 SST and Chlorophyll-a images (from July 2002 to Dec 2016), with a spatial resolution of ~1km. A combination of Topographic Position Index (TPI) and image segmentation techniques was used to map the spatial extent of the Bonney Coast upwelling. The Chlorophyll-a and SST signatures of the upwelling areas have also been extracted.  The results confirmed that the Bonney Coast upwelling is indeed a seasonal system occurred between November and April. The upwelling is often most intensive in February and March. There is strong inter-annual variation. For example, in the summer of 2008-09, upwelling was only identified in February 2009; while, in the summers of 2013-14 and 2015-16, the upwelling was identified in all of the six months. Whether this inter-annual variation is influenced by the ENSO events is under further investigation. During intensive upwelling events (e.g., in Feb and Mar), the upwelling influences more than 10,000 km2 surface area, with the SST anomaly more than 1oC lower than that of its surrounding areas. The upwelling areas often have mean Chlorophyll-a concentrations over 0.8 mg/m3 which is nearly double of the mean summer Chlorophyll-a concentration in Australian continental shelf.
This abstract was submitted/presented to the 2017 Australian Marine Science Association Conference - AMSA (https://www.amsa.asn.au/2017-darwin)

Tags: Bonney Coast, EARTH SCIENCES, MODIS, Published_External, remote sensing, upwelling
Organization: Geoscience Australia Data
Tinfish 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
Sunday 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-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Gecko 1992 Detailed Gravity Survey, NT (P199212), 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 Gecko 1992 Detailed Gravity Survey, NT (P199212) contains a total of 262 point data values acquired at a spacing of 50 metres. The data is located in NT and were acquired in 1992, under project No. 199212 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NT, Published_External, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199212
Organization: Geoscience Australia Data
Volcanic ash fall hazard and risk: Technical Background paper for the UN-ISDR 2015 Global Assessment Report on Disaster Risk Reduction

All explosive eruptions generate tephra, fragments of volcanic rock that are produced when magma or vent material is explosively disintegrated during eruption. Tephra is then convected upwards with the eruption column and carried downwind, falling out of suspension and potentially affecting communities across hundreds, or even thousands, of square kilometres. Although tephra falls rarely endanger human life directly, threats to public health and disruption to critical infrastructure services, aviation and primary production can lead to potentially substantial societal impacts. Even relatively small eruptions, such as the 2010 EyjafjallajÃ¶kull eruption in Iceland (VEI 4 on a logarithmic scale of 0 to 8 ), can cause widespread disruption, damage and economic loss. 
Given the potentially large geographic dispersal of tephra, and the substantial impacts that even small (a few mm) deposits can have for society, this background paper elaborates upon the tephra component of the volcanic contribution to the UN Global Assessment Report 2015. Here, we provide an overview of tephra fall hazard at global, regional and local scales and discuss the key components required to carry these hazard estimates forward to risk: namely identification of likely impacts and the response (vulnerability) of key sectors of society to tephra fall impact. Broad relationships between tephra thickness and key levels of damage have been outlined.  Greater knowledge of future tephra fall hazard and associated impacts can support mitigation actions, crisis planning and emergency management activities and is an essential step towards building resilience for communities.

Tags: External Publication, Published_External, Volcanology
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (se49-05)

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
Forest Vale 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
Early Silurian (Llandovery) conodonts from the Barbwire Terrace, Canning Basin, Western Australia

The recovery of a small Early to Middle Llandovery (Early Silurian) conodont fauna from core samples in two wells (WMC Acacia 1 and WMC Boab 1) is the first documentation of Silurian rocks in the Canning Basin. The recovery of Ozarkodina hassi from both wells allows correlation of this fauna with the Rhuddanian to Aeronian Stages (Early to Middle Llandovery), which equates with the acuminatus Zone to sedgwickii Zone graptolite faunas.  The samples are from a stratigraphic unit defined as the Lower Carbonate Member of the Worral Formation, but lithologic characteristics and age constraints indicate that the lower portion of this carbonate is part of the underlying Sahara Formation, the uppermost unit of the Carribuddy Group. The overlying Worral Formation (restricted) is of late Early to Middle Devonian (Emsian-Eifelian) age. This relationship has implications for the resource potential of the Canning Basin.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Geoscience Australia Data
Petrology of the layered mafic/ultramafic Giles Complex, western Musgrave Block, Western Australia : Igneous stratigraphy, mineralogy and petrogenesis of the Jameson Range, Murray Range, Blackstone Range, Hinckley Range, Bell Rock Range, south Mt. West and Latitude Hill intrusions

Legacy product - no abstract available

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Record, geology, petrology
Organization: Geoscience Australia Data
Andamooka Airborne Magnetic Radiometric and DEM Survey, 2017 (P1282), radiometric line data

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 Andamooka Airborne Magnetic Radiometric and DEM Survey, 2017 (P1282), radiometric line data were acquired in 2017 by the SA Government, and consisted of 81874 line-kilometres of data at 200m line spacing and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, Published_External, SA, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 1282, thorium, uranium, vector
Organization: Geoscience Australia Data