AndreaBozzo/ceres-open-data-index huggingface dataset:
Maryborough Basin (Mundubbera,Maryborough,Wide Bay), SE QLD, 1986 (P516), 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 Maryborough Basin (Mundubbera,Maryborough,Wide Bay), SE QLD, 1986 survey were acquired in 1986 by the QLD Government, and consisted of 31759 line-kilometres of data at 1500m line spacing and 150m 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, QLD, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 516, vector
Organization: Geoscience Australia Data
NTData (digital geology of the Northern Territory), Henbury

These data are a digital representation of information depicted on printed maps from the Australia 1:250 000 Geological Series produced by AGSO and the Northern Territory Geological Survey (NTGS) between 1963 and 1998.  The data are in a tiled format 
and are not seamless, although basic edgematching has been done where possible.  Tiles are arranged according to the standard Australian 1:250 000 sheet breakup.  The complete dataset is comprised of the 90 tiles covering the Northern Territory.

Tags: AU-NT, Earth Sciences, GIS Dataset, Published_External, Regional, dataset, geology
Organization: Geoscience Australia Data
Minilya Special 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-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
An updated National Seismic Hazard Assessment for Australia: Are we designing for the right earthquakes?

Geoscience Australia (GA) has embarked on a project to update the seismic hazard model for Australia through the National Seismic Hazard Assessment (NSHA18) project. The draft NSHA18 update yields many important advances on its predecessors, including: 1) calculation in a full probabilistic framework using the Global Earthquake Model’s OpenQuake-engine; 2) consistent expression of earthquake magni-tudes in terms of moment magnitude, MW; 3) inclusion of epistemic uncertainty through the use of alterna-tive source models; 4) inclusion of a national fault-source model based on the Australian Neotectonic Features database; 5) the use of modern ground-motion models; and 6) inclusion of epistemic uncertainty on seismic source models, ground-motion models and  fault occurrence and earthquake clustering models.
The draft NSHA18 seismic design ground motions are significantly lower than those in the current (1991-era) AS1170.4–2007 hazard map at the 1/500-year annual ground-motion exceedance probability (AEP) level. However, draft values at lower probabilities (i.e., 1/2475-year AEP) are entirely consistent, in terms of the percentage area of land mass exceeding different ground-motion thresholds, with other Stable Continental Regions (e.g., central &amp; eastern United States). The large reduction in seismic hazard at the 1/500-year AEP level has led to engineering design professionals questioning whether the new draft design values will provide enough structural resilience to potential seismic loads from rare large earthquakes. This process underscores the challenges in developing national-scale probabilistic seismic hazard analyses (PSHAs) in slowly-deforming regions, where a 1/500-year AEP design level is likely to be much lower than the ANCOLD Maximum Credible Earthquake (MCE) ground motions. Consequently, a robust discussion among the Standards Australia code committee, hazard practitioners and end users is required to consider alternative hazard and/or risk objectives for future standards.
Site-specific PSHAs undertaken for owners and operators of extreme and high consequence dams generally require hazard evaluations at lower probabilities than for typical structural design as recommended in AS1170.4. However, modern national assessments, such as the NSHA18, can provide a benchmark in terms of recommended seismicity models, fault-source models, ground-motion models, as well as hazard values, for low-probability site-specific analyses. With a new understanding of earthquake processes in Australia leading to lower ground-motion hazard values for higher probability events (e.g., 1/500-year AEP), we should also ask whether the currently recommended design probabilities provide an acceptable level of seismic resilience to critical facilities (such as dams) and regular structures.
Abstract presented at the 2017 Australian National Committee on Large Dams (ANCOLD) Conference

Tags: EARTH SCIENCES, Published_External, design codes, neotectonic faults, probabilistic seismic hazard analysis - PSHA
Organization: Geoscience Australia Data
The Proterozoic impact record of Australia

Six impact structures of known or probable Proterozoic age have been identified in Australia: (1) the Teague Ring structure in central Western Australia, 30 km in diameter and possibly about 1630 Ma in age; (2) the Spider structure in northern Western Australia, 11 km wide, 13 km long, and probably Meso- to Neoproterozoic in age; (3) the Kelly West structure in the central Northern Territory, possibly between 8 and 20 km in diameter and Neoproterozoic in age; (4) the Strangways structure in the northern Northern Territory, possibly 40 km in diameter and about 1000 Ma in age; (5) the Lawn Hill structure in northwestern Queensland, 20 km in diameter and probably of Neoproterozoic age; and (6) the Acraman structure, probably about 35 to 40 km in diameter and about 590 Ma in age.  Discovery of impact structures in exposed gently to mildly deformed stratified Proterozoic rocks in Australia is estimated to be complete or close to complete at diameters equal to or greater than 20 km. From the four known structures with diameter of about 20 km, the estimated area of exposed Proterozoic strata (~1.15 X 106 km2), and the estimated mean time of exposure (~900 Ma), the cratering rate is estimated at (3.8 Â± 1.9) x 10-15 km-2 y-1. This estimate for the production of craters greater than or equal to20 km during the Proterozoic is consistent with the mean cratering rate for the last 3.2 Ga on the Moon, and somewhat below the estimated present cratering rate on Earth.

Tags: AUS, Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
North Australia Project Tanami Region and Arunta North: archive of GIS and associated data

This data package is an archive of geospatially located and other digital geological and geophysical data covering the Tanami Region and north Arunta in the Northern Territory and Western Australia, a portion of the North Australia Project undertaken to understand elements within the North Australia Craton and its margins. It includes themes for a number of regional scale, 1:250 000 scale, and 1:100 000 scale geological map sheets, mineral locations, geophysical images, company drill hole and rock chip locations, company and Geoscience Australia geochemistry, and interpretations and synthesis derived from the data.

Tags: AU-NT, AU-WA, Earth Sciences, GIS, GIS Dataset, Published_External, Regional, geochemistry, geology, geophysics
Organization: Geoscience Australia Data
Geoscience Australia Mangrove Canopy Cover Collection 3

Tracking changes in the canopy density of mangroves, Digital Earth Australia (DEA) Mangrove Canopy Cover reveals how these extraordinary trees may be responding to sea level rise, severe tropical cyclones, drought, climatic cycles, changing temperatures and large storm events.
Mangroves provide a diverse array of ecosystem services but these are impacted upon by both natural and anthropogenic drivers of change. In Australia, mangroves are protected by law and hence the natural drivers predominate.
It is important to know the extent and canopy density of mangroves in Australia so that we can measure how mangroves are responding to sea level rise, severe tropical cyclones and climatic cycles.
This product provides valuable information about the extent and canopy density of mangroves for each year from 1987 for the entire Australian coastline.
The canopy cover classes are:

20-50% (pale green)
50-80% (mid green)
80-100% (dark green)
The product consists of a sequence (one per year) of 30 m resolution maps that are generated by analysing the Landsat fractional cover developed by the Joint Remote Sensing Research Program and the Global Mangrove Watch layers developed by the Japanese Aerospace Exploration Agency.

This product is the result of a collaboration between Geoscience Australia, the University of Aberyswyth, CSIRO, the Joint Remote Sensing Research Program and the Terrestrial Ecosystem Research Network.

Tags: EARTH SCIENCES, Published_External, coast, coastal ecosystem, forest, green, woodland
Organization: Geoscience Australia Data
Three Rivers 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
Geochemistry of the Cullen Granite, Northern Territory

A geochemical study of the Cullen Granite in the Northern Territory, involving major elements and 25 trace elements (Li, Be, F, S, V, Co, Ni, Cu, Zn, Ga, As, Rb, Sr, Y, Zr, Nb, Mo, Sn, Ba, La, Ce, W, Pb, Th, U) has been carried out. The results support field observations in that they indicate that one of the five phases of granite identified is younger and more highly fractionated than the rest. The existence of a relationship between the geochemistry of the Cullen Granite and mineralisation contained within the granite and surrounding sediments is suggested by only a few of the trace elements determined. High U concentrations within the granite near Edith River can be correlated with known mineralisation in the granite, although no U mineralisation has been reported from a region southwest of Frances Creek where the U content of the granite is also high. Anomalously high concentrations of Cu and W in the granite may be related to mineralisation in nearby sediments. The well documented tendency for the Sn content of intrusive rocks associated with Sn deposits to be higher than in those rocks without deposits is not supported by the Cullen Granite data. Although numerous Sn deposits occur in and around the granite, its Sn content is near or below the limit of detection.

Tags: Earth Sciences, GA Publication, Journal, NT, Published_External
Organization: Geoscience Australia Data
Central Canning, WA, 2009 (P1209), 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 Central Canning, WA, 2009 survey were acquired in 2009 by the WA Government, and consisted of 91700 line-kilometres of data at 800m 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, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 1209, vector
Organization: Geoscience Australia Data
GSV Murray Basin Kerang A Vic pot tho ura totg 4band radiometric grid geodetic

This GSV Murray Basin Kerang A 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 St Arnaud/Bendigo West, (Kerang) Vic, 1980 (GSV0192). 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 Murray Basin Kerang A 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 1980 by the VIC Government, and consisted of 55000 line-kilometres of data at 250m 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 602, thorium, total count, uranium, window countrate
Organization: Geoscience Australia Data
GSWA Seemore Eucla Basin 1 Doserate 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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid.
This GSWA Seemore Eucla Basin 1 Doserate Grid Geodetic has a cell size of 0.0004 degrees (approximately 41m) and shows the terrestrial dose rate of the Seemore, WA, 2009 (Eucla Basin 1). The data used to produce this grid was acquired in 2009 by the WA Government, and consisted of 105710 line-kilometres of data at 200m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NASVD, NCI, Published_External, Th, U, WA, airborne digital data, dose, dose rate, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, rate, spectrometry, survey 1208, thorium, uranium
Organization: Geoscience Australia Data
Kapui 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-NT, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
GSWA Menzies North TMI 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 GSWA Menzies North TMI Grid Geodetic has a cell size of 0.00021 degrees (approximately 22m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2013 by the WA Government, and consisted of 94842 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TMI, WA, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 1260, total magnetic intensity
Organization: Geoscience Australia Data
GSQ Central Bowen Basin Qld magnetic vd1 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 GSQ Central Bowen Basin Qld magnetic vd1 grid geodetic is a first vertical derivative of the Total Magnetic Intensity grid for the Central Bowen Basin, Qld, 2003.
This grid has a cell size of 0.00096 degrees (approximately 102m). The grid has units of nanoTesla per km (or nT/km). The data used to produce the TMI grid was acquired in 2003 by the QLD Government, and consisted of 65476 line-kilometres of data at 400m line spacing and 80m terrain clearance. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.

Tags: 1vd, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, airborne digital data, first vertical derivative, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 929
Organization: Geoscience Australia Data
East Darling Gravity (P196335), 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 East Darling Gravity (P196335) contains a total of 422 point data values acquired at a spacing between 2438 and 8045 metres. The data is located in NSW and were acquired in 1963, under project No. 196335 for Planet Explor Co P/L.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NSW, Published_External, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 196335
Organization: Geoscience Australia Data
Maitland 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_SA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data