AndreaBozzo/ceres-open-data-index huggingface dataset:
Assessing the Effect of Hydrocarbon Oil Type and Thickness on a Remote Sensing Signal: a Sensitivity Study Based on the Optical Properties of Two Australian Oils and the HYMAP and Quickbird Sensors

We measured the light absorption properties of two naturally occurring Australian hydrocarbon oils, a Gippsland light crude oil and a North West Shelf light condensate. Using these results in conjunction with estimated sensor environmental noise thresholds, the theoretical minimum limit of detectability of each oil type (as a function of oil thickness) was calculated for both the hyperspectral HYMAP and multispectral Quickbird sensors. The Gippsland crude oil is discernable at layer thickness of 20 micro metres or more in the Quickbird green channel. The HYMAP sensor was found to be theoretically capable of detecting a layer of Gippsland crude oil with a thickness of 10 micro metres in approximately six sensor channels. By contrast, the North West Shelf light condensate was not able to be detected by either sensor for any thickness up to 200 icro metres. Optical remote sensing is therefore not applicable for detecting diagnostic absorption features associated with this light condensate oil type, which is considered representative for the prospective Australian Northwest Shelf area. We conclude that oil type is critical to the applicability of optical remote sensing for natural oil slick detection and identification. We recommend that a sensor- and oil-specific sensitivity study should be conducted prior to applying optical remote sensors for oil exploration.
The oil optical properties were obtained using two different laboratory methods, a reflectance-based approach and transmittance-based approach. The reflectance-based approach was relatively complex to implement, but was chosen in order to replicate as closely as possible real world remote sensing measurement conditions of an oil film on water. The transmittance-based approach, based upon standard laboratory spectrophotometric measurements was found to generate results in good agreement with the reflectance-based approach. Therefore, for future oil- and sensor-specific sensitivity studies, we recommend the relatively accessible transmittance-based approach, which is detailed in this paper.

Tags: AU, Article, Earth Sciences, External Publication, Published_External, hydrocarbons, petroleum exploration, remote sensing, satellite imagery
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Peak Hill (sg50-08)

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
GSQ Cloncurry ReducedToPole 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 0.00018 degrees (approximately 19m).The data are in nanoTesla (or nT). The data used to produce this grid was acquired in 2017 by the QLD Government, and consisted of 113387 line-kilometres of data at line spacing between 50m and 100m, and 50m 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, Published_External, QLD, RTP, TMI, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, reduced to the pole, survey 1292, total magnetic intensity
Organization: Geoscience Australia Data
Wilson 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
Matlock 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-VIC, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Mcfarlane 1:100,000 regolith-landform map CRC LEME

The Mcfarlane 1:100,000 regolith-landform map illustrates the distribution of regolith materials and the landforms on which they occur, described using the RTMAP scheme developed by Geoscience Australia

Tags: 100K scale, AU-NT, Geological Map, Geology, Published_External, landforms, regolith
Organization: Geoscience Australia Data
The Positioning Australia Program – Delivering a National Positioning Capability

The Positioning Australia Program is delivering every day. Thousands of users from all around the country connect to our systems to access accurate and reliable data from a national network of continuously operating reference stations.
A national capability cannot be achieved alone, it takes collaboration across all levels of government and industry. In this presentation Ryan and Amy will show how open data delivered through Positioning Australia is supporting the inland rail project and delivering better positioning services for farmers in South Australia.
There have been many challenges to overcome in delivering this national capability. The speakers will discuss how GA has partnered with industry to facilitate access to land and build infrastructure across the nation during the COVID lockdowns and border closures.
Finally, Ryan and Amy will share how we are working to continuously improve our offerings and access to our data and change the positioning landscape in Australia.

Tags: EARTH SCIENCES, Positioning Australia Program, Published_External, Wednesday Seminar, positioning
Organization: Geoscience Australia Data
A Critical Review of Spatial Predictive Modeling Process in Environmental Sciences with Reproducible Examples in R

Spatial predictive methods are increasingly being used to generate predictions across various disciplines in environmental sciences. Accuracy of the predictions is critical as they form the basis for environmental management and conservation. Therefore, improving the accuracy by selecting an appropriate method and then developing the most accurate predictive model(s) is essential. However, it is challenging to select an appropriate method and find the most accurate predictive model for a given dataset due to many aspects and multiple factors involved in the modeling process. Many previous studies considered only a portion of these aspects and factors, often leading to sub-optimal or even misleading predictive models. This study evaluates a spatial predictive modeling process, and identifies nine major components for spatial predictive modeling. Each of these nine components is then reviewed, and guidelines for selecting and applying relevant components and developing accurate predictive models are provided. Finally, reproducible examples using spm, an R package, are provided to demonstrate how to select and develop predictive models using machine learning, geostatistics, and their hybrid methods according to predictive accuracy for spatial predictive modeling; reproducible examples are also provided to generate and visualize spatial predictions in environmental sciences.
Citation: Li, J. A Critical Review of Spatial Predictive Modeling Process in Environmental Sciences with Reproducible Examples in R. Appl. Sci. 2019, 9, 2048. https://doi.org/10.3390/app9102048

Tags: EARTH SCIENCES, Published_External, feature selection, model assessment, model validation, predictive accuracy, reproducible research, spatial predictions, spatial predictive models, variable selection
Organization: Geoscience Australia Data
Beagle Reef 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, marine, topography
Organization: Geoscience Australia Data
Catalogue of Type, Figured and Cited Specimens in the Commonwealth Palaeontological Collection, Conodonta

The Commonwealth Palaeontological Collection is a national collection of almost exclusively Australasianfossils, including the type specimens of many new species and genera, which have been illustrated or otherwise referredto in scientific publications. The Collection originated with the 1927 appointment in Melbourne of a CommonwealthPalaeontologist, who soon established a separate register of such published specimens, which quickly became recognisedby the prefixed acronym CPC. The Collection is currently housed in Canberra, and administered by the AustralianGeological Survey Organisation (AGSO), previously known as the Bureau of Mineral Resources, Geology &amp; Geophysics(BAIR). The collection has grown steadily, and at the time of writing contains nearly 33,000 specimens. A somewhatfuller historical account has been given in the introduction to previous catalogues in this series.
The steady increase in the size of the Collection since the early 1960's reflects a strong research effort todocument through formal taxonomic description fossil faunas and floras from all ages and areas which have been thesubject of geological investigations by BMR and now AGSO. The Commonwealth Palaeontological Collection is thusan essential database for biochronological dating of sedimentary rocks, with wide application in geological mapping andsubsurface investigations associated with all aspects of land use, including petroleum and mineral exploration. Thespecimens it contains document the evolutionary history of the Australian biota over the last 3,000 million years, andalso include extensive material from Papua New Guinea, the Australian Antarctic Territory, and the seafloor of ourcontinental shelves.
A first series of catalogues of the Collection, part of a more extensive series covering many Universitycollections, was published by Crespin in 1960, 1971 and 1974 as Bls/IR Reports 54, 148, 160. This catalogue is thelatest in the current series, which is being produced from the AGSO 'Oracle' database PALEO. The first threecatalogues appeared as part of the same BMR Report series, which has now been discontinued. These covered theBrachiopoda (Report 298), Bryozoa (Report 305), and the Archaeocyatha. Porifera and Coelenterata (combined in Report307). The introduction to those catalogues contains a more detailed discussion of the development of both catalogueseries. Two catalogues start the second part of this new series, appearing in the AGSO Record series: one on theVertebrata, and the present one on the Conodonta. Further volumes will appear as data entry for particular taxonomicgroups is brought up to date.

Tags: Earth Sciences, GA Publication, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Bathymetry grids of south east Tasmania Shelf

Geoscience Australia carried out marine surveys in southeast Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island.
The dataset contains 8  bathymetry grids produced from the processed EM3002 bathymetry data using the CARIS HIPS and SIPS software. Please see the metadata informaiton for detailed information.

Tags: AU-TAS, AusSeabed, CERF, HVC_144641, Marine Data Backscatter Grid, Marine Geoscience, Published_External, abiotic surrogates, bathymetry, marine
Organization: Geoscience Australia Data
Spring point locations compiled for the Nulla Basalt Province

Summary

Spring point locations compiled for the Nulla Basalt Province

A compilation of spring locations as identified through various methods, including existing Queensland Springs Database, topographic mapping, fieldwork visits, landholder citizen scientist mapping, and inspection for neighbouring similar features in Google Earth. This compilation has had locations adjusted through inspecting visible imagery and elevation data to identify the likely positions of springs at higher resolution.

Tags: EARTH SCIENCES, EFTF, Exploring for the Future, GEOLOGY, Nulla Basalt, Published_External, Upper Burdekin, discharge, groundwater, hydrogeology, spring
Organization: Geoscience Australia Data
Buckingham Downs 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-QLD, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
GSWA Murgoo 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 Murgoo TMI Grid Geodetic has a cell size of 0.00042 degrees (approximately 44m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2011 by the WA Government, and consisted of 131101 line-kilometres of data at 200m 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 1239, total magnetic intensity
Organization: Geoscience Australia Data
Napperby/Hermannsburg1 1, NT, 1997 (P1002), 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 Napperby/Hermannsburg1 1, NT, 1997 (P1002), radiometric line data, AWAGS levelled were acquired in 1997 by the NT Government, and consisted of 105377 line-kilometres of data at 400m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NT, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 1002, thorium, uranium, vector
Organization: Geoscience Australia Data
Mawson, 1961: Field Notebook 2

The Antarctic field notebooks contain the geological observations recorded by Bureau of Mineral Resources geologists during their trips to Antarctica between 1948 – 1980s. Files include a scanned copy of the original handwritten field notebook, transcription of the notebook’s contents transcribed by volunteers and validated by an experienced geologist, and a csv file of the transcription with Text Encoding Initiative (TEI) tags. The original Antarctic field notebooks are held at the N.H. (Doc) Fisher Geoscience Library at Geoscience Australia, Canberra.

Tags: Antarctica, Earth Sciences, Geology, Notebook, Published_External
Organization: Geoscience Australia Data
Reconciling the onshore-offshore stratigraphy of the Canning Basin and implications for petroleum prospectivity

The Canning Basin is a prospective hydrocarbon frontier basin and is unusual for having limited offshore seismic and well data in comparison with its onshore extent. In this study, seismic mapping was conducted to better resolve the continuity of 13 key stratigraphic units from onshore to offshore to delineate prospective offshore hydrocarbon-bearing units, and better understand the distribution of mafic igneous units that can compartmentalise migration pathways and influence heat flow. The offshore Canning Basin strata are poorly constrained in six wells with limited seismic coverage; hence data availability was bolstered by integrating data from the onshore portion of the basin and adjacent basins into a single 3D seismic stratigraphic model. This model integrates over 10 000 km of historical 2D seismic data and 23 exploration wells to allow mapping of key stratal surfaces. Mapped seismic horizons were used to construct isochores and regional cross-sections. Seven of the 13 units were mapped offshore for the first time, revealing that the onshore and offshore stratigraphy are similar, albeit with some minor differences, and mafic igneous units are more interconnected than previously documented whereby they may constitute a mafic magmatic province. These basin-scale maps provide a framework for future research and resource exploration in the Canning Basin. To better understand the basin’s geological evolution, tectonic history and petroleum prospectivity, additional well data are needed in the offshore Canning Basin where Ordovician strata have yet to be sampled.

C. T. G. Yule, J. Daniell, D. S. Edwards, N. Rollet & E. M. Roberts&nbsp;(2023).&nbsp;Reconciling the onshore/offshore stratigraphy of the Canning Basin and implications for petroleum prospectivity,&nbsp;Australian Journal of Earth Sciences,&nbsp;DOI:&nbsp;10.1080/08120099.2023.2194945
Appeared in Australian Journal of Earth Sciences Pages 691-715, Volume 70, 2023 - Issue 5.

Tags: Canning Basin, Offshore Energy Systems, Petroleum Prospectivity, Published_External, Resource geoscience, Stratigraphy (incl. biostratigraphy, seismic interpretation, sequence stratigraphy and basin analysis)
Organization: Geoscience Australia Data
Forrest 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
Moolyella 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
Y2 Nov 2003 panel session slidespdf are the summary session slides made to sponsors and the review panel in November 2003

Y2 Nov 2003 panel session slides.pdf are the summary session slides made to sponsors and the review panel in November 2003.

Tags: Earth Sciences, PMD*CRC Publication, Project Y2 - Appendix 9, Published_External, pmd*CRC
Organization: Geoscience Australia Data