AndreaBozzo/ceres-open-data-index huggingface dataset:
Improving our Knowledge of Australia's Near-pristine Estuaries

The central aim of the Comparative Geomorphology of Estuaries Project of the Coastal CRC was to improve our understanding of Australia's near-pristine estuaries. As the title implies, the project had a geomorphic focus in that a major output was mapping of geomorphic habitats of a representative selection of nearpristine estuaries from around Australia.

Tags: AU, Earth Sciences, External Publication, Published_External, Report, coasts, geomorphology, habitat, marine, remote sensing
Organization: Geoscience Australia Data
Rates of Shoreline Progradation During the Last 1,700 Years at Beachmere, Southeastern Queensland, Australia, Based on Optical Ages of Beach Ridges

The morphology and chronostratigraphy of seven beach ridges at Beachmere, southeastern Queensland, Australia, provide a record of changes in shoreline accretion and relative sea level over the last 1,700 years. Optical dating of beds of pebbly sand that form the inner 7th ridge reveals that 1,700 -140 yrs ago relative sea level at the site was approximately 1 m higher than at present. During the subsequent 600 yrs, the coast prograded at ~ 0.16 m yr-1 until ridge 6 was emplaced 1,140 ?80 yrs ago; this increased to a rate of ~0.40 m yr-1 as ridges 5 (optical age: 860 ?70 yrs) to 1 (140 - 50 yrs) were emplaced. A relatively wide (~200 m) intertidal to supratidal flat between ridges 4 (690 - 60 yrs) and 3 (190 ?40 yrs) marks a change from well-defined and regularly spaced ridges, 7 - 4 (~ 95 m apart), to lower amplitude closely spaced ridges, 3 ? 1 (&lt; 33 m apart). Ridges 3 ? 1 have Optical ages that overlap within their 1 ? uncertainty and probably represent a rapid phase of shoreline accretion related to an increase in sediment supply associated with European settlement. The optical age of ridge 1 (140 ? 50 yrs), which sits immediately behind the modern beach, provides a maximum age for the onset of the modern erosional regime at the site.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, erosion, geochronology, marine
Organization: Geoscience Australia Data
National Gravity Compilation 2019 Ausdrape elevation geoid grid

Digital Elevation data record the terrain height variations from the processed SRTM surface elevation 3 second grid data with a drape surface overlain. This National Gravity Compilation 2019 Ausdrape elevation geoid grid is elevation data for the 2019 Australian National Gravity Grids B series. These data are used in the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). All data (i.e., ground, airborne and marine derived from satellite altimetry) were vertically continued to this surface during processing. The surface was generated to mimic a smooth airborne survey drape surface with a minimum surface clearance of 250 m and an isotropic maximum climb and descent rates of 25 m per km. The ground surface data were derived from SRTM data with 3 second grid cell size. The data are given in units of meters. The data are given in units of meters.

Tags: Ausdrape, Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, NCI, None, Published_External, airborne, digital data, geoid, geophysical survey, geophysics, grid, raster, survey 202008, terrain
Organization: Geoscience Australia Data
Seismic Stratigraphy and Sediment Distribution on the Wilkes Land and Terre Adelie Margins, East Antarctica

Seismic reflection data show the existence of two major sedimentary basins along the continental margin of Wilkes Land and Terre AdÃ©lie, East Antarctica, that contain more than 5 s TWT (&gt; 9 km) of sediments. Four seismic megasequences are identified (MS4 to MS1) that are bounded by: basement, unconformities of interpreted Turonian, Maastrichtian and early Middle Eocene age, and the seafloor. The 4-5 km thick rift and pre-rift sediments are concentrated in a margin-parallel basin (Sabrina Basin). On the basis of seismic correlation with the Australian margin, this basin is interpreted to be of Late Jurassic to mid-Cretaceous age. The post-rift sediments are generally thick along the margin and in the adjacent deep-ocean basin, but are particularly thick in a major depocentre off west Wilkes Land, named here the Budd Coast Basin (BCB). The BCB contains a maximum observed thickness of 5 s TWT (9 km) of post-rift sediments and its location suggests that the sediments were largely derived from a sub-glacial basin currently occupied by the Totten Glacier.

Tags: AQ, Antarctic data, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, geomorphology, marine, sedimentology, stratigraphy
Organization: Geoscience Australia Data
Keppel Bay: Physical Processes and Biogeochemical Engineering

In recent years there has been concern that catchment-derived nutrients and sediments discharged by rivers into the lagoon of the Great Barrier Reef are having a deleterious impact on near-shore reef ecosystems. On average, the Fitzroy River delivers the second largest quantity of these materials to the lagoon after the Burdekin River. The Fitzroy Agricultural Contaminants Project (AC), which is a Coastal CRC project, included amongst its aims the development of an understanding of the fate and impact of these agricultural contaminants (nutrients and sediments) within the Fitzroy Estuary-Keppel Bay system.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Report, coasts, geochemistry, marine
Organization: Geoscience Australia Data
Marine Resources, Biophysical Processes, and Environmental Management of a Tropical Shelf Seaway: Torres Strait, Australia - Introduction to the Special Issue

This article is the introduction to a special issue of Continental Shelf Research containing papers giving research results produced as part of Australia's Torres Strait Co-operative Research Centre (CRC) Program.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, marine survey
Organization: Geoscience Australia Data
Gravity, magnetic and bathymetry grids from levelled data for Southwest Australia : Southwest region

The Australian Geological Survey Organistaion (AGSO) has produced a set of digital bathymetry, gravity and magnetic grids for the southwest quadrant of Australia (24 - 46S, 106-140E), using all available land, marine and satellite data. The work was done in cooperation with Desmond Fitzgerald &amp; Associates (DFA), and with significant bathymetric data input from the Australian Hydrographic Office (AHO). The results were obtained by performing a network adjustment on marine ship-track data, and combining these with onshore and satellite-derived data.

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Record, bathymetry, geophysics, gravity, magnetics, marine
Organization: Geoscience Australia Data
L086 Marine Geophysical survey North West Continental Shelf, 1968

The Bureau of Mineral Resources has carried out two large scale reconnaissance marine geophysical surveys in the Joseph Bonaparte Gulf and Timor Sea areas in 1965 and 19670 It is proposed to continue this geophysical reconnaissance to the south over the northwest continental shelf from Ashmore reef to Barrow Island. 16 000 line miles should be covered in 3 months on mainly east-west lines 9 nautical miles apart. The boat speed will be about 10 knots. The survey will be done by Ray Geophysics (Australia) Pty Ltd under contract.

Tags: AU-NT, AU-WA,TL, Published_External, Seismic Data, Seismology and Seismic Exploration, geophysics, marine, petroleum exploration, seismic reflection, seismic survey, seismic velocity
Organization: Geoscience Australia Data
National Gravity Compilation 2019 Ausdrape elevation ellipsoid grid

Digital Elevation data record the terrain height variations from the processed SRTM surface elevation 3 second grid data with a drape surface overlain. This National Gravity Compilation 2019 Ausdrape elevation ellipsoid grid contains the elevation of the observation surface for the 2019 Australian National Gravity Grids B series relative to the GRS80 ellipsoid (GDA94 datum). These data are used in the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). All data (i.e., ground, airborne and marine derived from satellite altimetry) were vertically continued to this surface during processing. The surface was generated to mimic a smooth airborne survey drape surface with a minimum surface clearance of 250 m and an isotropic maximum climb and descent rates of 25 m per km. The ground surface data were derived from SRTM data with 3 second grid cell size. The data are given in units of meters.

Tags: Ausdrape, Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, NCI, None, Published_External, airborne, digital data, ellipsoid, geophysical survey, geophysics, grid, raster, survey 202008, terrain
Organization: Geoscience Australia Data
Gifford Marine Park Bathymetry - 30m Resolution Grid

Australia has established a network of 58 marine parks within Commonwealth waters covering a total of 3.3 million square kilometres, or 40 per cent of our exclusive economic zone (excluding Australian Antarctic Territory). These parks span a range of settings, from near coastal and shelf habitats to abyssal plains. Parks Australia manages the park network through management plans that came into effect for all parks on 1 July 2018. Geoscience Australia is contributing to their management by collating and interpreting existing environmental data, and through the collection of new marine data. “Eco-narrative” documents are being developed for those parks, where sufficient information is available, delivering collations and interpretations of seafloor geomorphology, oceanography and ecology. Many of these interpretations rely on bathymetric grids and their derived products, including those in this data release. 
Bathymetry grids 
The bathymetry of the marine parks was created by compiling and processing Geoscience Australia’s bathymetry data holding gridded at the optimum resolution depending of the vessel’s sonar system. 
The bathymetry of the park is illustrated by a panchromatic geotiff image, developed by combining the bathymetric data with a hillshade image. 
 Morphological Surfaces 
Geoscience Australia has developed a new marine seafloor classification scheme, which uses the two-part seafloor mapping morphology approach of Dove et al (2016). This new scheme is semi-hierarchical and the first step divides the slope of the seafloor into three Morphological Surface categories (Plain, &lt;2°; Slope, 2-10°; Escarpment, &gt;10°). 
Dove, D., Bradwell, T., Carter, G., Cotterill, C., Gafeira, J., Green, S., Krabbendam, M., Mellet, C., Stevenson, A., Stewart, H., Westhead, K., Scott, G., Guinan, J., Judge, M. Monteys, X., Elvenes, S., Baeten, N., Dolan, M., Thorsnes, T., Bjarnadóttir, L., Ottesen, D. (2016). Seabed geomorphology: a twopart classification system. British Geological Survey, Open Report OR/16/001. 13 pages. 
This research is supported by the National Environmental Science Program (NESP) Marine Biodiversity Hub through Project D1.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, HVC_144641, Marine Biodiversity Hub, National Environmental Science Program, Published_External, bathymetry, bathymetry grid, marine, marine data
Organization: Geoscience Australia Data
The Mesozoic strata of Bauhinia Downs 1:250 000 sheet area

Mesozoic strata of the Bauhinia Downs 1:250,000 Sheet area were examined during the 1960 field season when observations were made on lithology and palaeogeography, and Lower Cretaceous fossils were collected at fourteen localities. Results of field observations have been recorded in Skwarko (1961a, b) and these, together with results of detailed examinations of fossils and the close dating of strata provide material for the present paper. Of the fourteen assemblages of fossils listed from the Bauhinia Downs 1:250,000 Sheet area seven are marine, six non-marine and one inconclusive. They range in age from Neocomian to Aptian.

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geology
Organization: Geoscience Australia Data
Application of random forest, generalised linear model and their hybrid methods with geostatistical techniques to count data: Predicting sponge species richness

Spatial distribution of sponge species richness (SSR) and its relationship with environment are important for marine ecosystem management, but they are either unavailable or unknown. Hence we applied random forest (RF), generalised linear model (GLM) and their hybrid methods with geostatistical techniques to SSR data by addressing relevant issues with variable selection and model selection. It was found that: 1) of five variable selection methods, one is suitable for selecting optimal RF predictive models; 2) traditional model selection methods are unsuitable for identifying GLM predictive models and joint application of RF and AIC can select accuracy-improved models; 3) highly correlated predictors may improve RF predictive accuracy; 4) hybrid methods for RF can accurately predict count data; and 5) effects of model averaging are method-dependent. This study depicted the non-linear relationships of SSR and predictors, generated spatial distribution of SSR with high accuracy and revealed the association of high SSR with hard seabed features.

<b>Citation:</b> Jin Li, Belinda Alvarez, Justy Siwabessy, Maggie Tran, Zhi Huang, Rachel Przeslawski, Lynda Radke, Floyd Howard, Scott Nichol, Application of random forest, generalised linear model and their hybrid methods with geostatistical techniques to count data: Predicting sponge species richness, <i>Environmental Modelling &amp; Software</i>, Volume 97, 2017, Pages 112-129, https://doi.org/10.1016/j.envsoft.2017.07.016

Tags: EARTH SCIENCES, Published_External, feature selection, machine learning - ML, model selection, predictive accuracy, spatial prediction, spatial predictive model
Organization: Geoscience Australia Data
Changing sea levels of the Australian east coast, suggested by levels of water-laid sand-deposits and by dune morphology

An investigation of beach-sand heavy-mineral deposits between the mouth of the Clarence River in northern New South Wales, and North Stradbroke Island in southern Queensland, was made by the Bureau of Mineral Resources during the years 1948 to 1950. The work done between the mouth of the Clarence River and Southport comprised detailed boring and sampling of beaches and coastal dunes and portion of coastal plains up to a mile or two inland. The levels of the bore-collars were determined in relation to high water mark on the beaches. On North Stradbroke Island, boring was done by Zinc Corporation and a reconnaissance geological investigation by the Bureau of Mineral Resources. The results of this work are being published by the Bureau, and portions of it which have a bearing on the changing sea-levels are summarized below.

Tags: AU-NSW, AU-QLD, Earth Sciences, GA Publication, Published_External, Record, coasts, marine, mineral deposits
Organization: Geoscience Australia Data
BMR Research Newsletter 5

Titles in this newsletter:
Platinum group minerals from a layer in the Munni Munni Complex of the Pilbara Block
Review of Baas Becking Geobiological Laboratory
BMR enhances database activity
The Exmouth Plateau revisited
Gold medal awarded to BMR
Welcome: Dick Henley
Palaeogeographic map project
Corrigendum: 'Red Book' New Australian distributor
Southwest Pacific research cruise
Murray Basin subsurface stratigraphic database
Towards the integration of image processing and computer graphics in BMR
Woodlark Triple junction: Sonar imagery from a spreading back-arc basin
Marine heatflow: A new field for Australian marine geoscience
Stable isotopic evidence for high rates of organic carbon accumulation in the Late Proterozoic
The notion and motion of the Australian lithosphere
Computer modelling for gold tax inquiry
French expeditions to the southern Kerguelen Plateau
Global Geosciences Transect Project
Seismic symposium
Reflections of an Australian's visit to China: Rifts and resources
World Ni resources
1986 BMR Research Symposium, 13-14 November - program
Hydrocarbon fluid inclusions and timing of oil migration

Tags: Earth Sciences, GA Publication, Published_External, Research Newsletter
Organization: Geoscience Australia Data
The Permian Orthotetacea of Western Australia

Species belonging to the superfamily Orthotetacea Williams form an important part of the Permian marine faunas of Western Australia. Four genera-Streptorhynchus King, Kiangsiella Chao, Derbyia Waagen,and PermoTthotetes gen. nov.-are represented. Twenty-one species are described and at least two others are indicated by incomplete collections. Many species appear to be restricted in range and are useful in stratigraphical correlation. The group of strophomenoid brachiopods now known as the superfamily Orthotetacea Williams 1953 has been for many years of interest to brachiopod students. Representative species are widely distributed throughout the world. The group attains its acme in the Upper Palaeozoic, particularly in Upper Carboniferous and Permian time. Six species only have hitherto been recorded in the Permian of Australia. One species has been described from the Permian of Eastern Australia-Streptorhynchus pelicanensis Fletcher, originally described by Etheridge in 1892 as Orthotetes senilis, from Queensland. Streptorhynchus perfidiabadensis (Etheridge) occurs at Treachery Bay, Northern Territory. Two species of Streptorhynchus and a Derbyia-like form were described from the Permian of Western Australia by Hosking (1932). In recent years extensive field work by geologists of the Bureau of Mineral Resources and of the University of Western Australia has added greatly to knowledge of the Western Australian Palaeozoic rocks and has augmented collections considerably. The Orthotetacea are now seen to be abundantly represented in Western Australia and are of considerable stratigraphical value. Four genera with at least 23 species can be distinguished in the Permian. The genus Schuchertella is known in the Devonian of the Fitzroy Basin and in the Lower Carboniferous Laurel Beds of the Fitzroy Basin. Schellwienella has lately been recognized in the Lower Carboniferous Septimus Limestone of the Bonaparte Gulf Basin and in the Lower Carboniferous Moogooree Limestone of the Carnarvon Basin. Schellwienella and an unidentified genus are present in the Carboniferous Weaber Group of the Bonaparte Gulf Basin of the Northern Territory.

Tags: AU-WA, Bulletin, Earth Sciences, GA Publication, Published_External
Organization: Geoscience Australia Data
Petrel Sub-basin Marine Survey (GA-0335 / SOL5463) (NLECI Program)/Seabed Geochemistry/Inorganic Elements

The Petrel Sub-basin Marine Environmental Survey GA-0335, (SOL5463) was undertaken using the RV Solander during May 2012, as part of the Commonwealth Government's National Low Emission Coal Initiative (NLECI).  The survey was undertaken as a collaboration between the Australian Institute of Marine Science (AIMS) and GA. The purpose was to acquire geophysical and biophysical data on shallow (less then 100m water depth) seabed environments within two targeted areas in the Petrel Sub-basin to support investigation for CO2 storage potential in these areas. This data-set comprises inorganic element data from surface seabed sediments (~0-2 cm) in the Timor Sea.

Tags: CO2 capture, Data Package, Earth Sciences, NT, Published_External, geochemistry, marine, marine environmental baselines, marine survey, seabed
Organization: Geoscience Australia Data
Overview of GA/JAMSTEC collaboration for deep stratigraphic drilling on the Lord Howe Rise

Zealandia is an intriguing continental fragment submerged beneath the oceans between eastern Australia, New Zealand and New Caledonia. Deep, sediment-filled basins were formed as tectonic forces stretched Zealandia before it ultimately fractured and separated from Australia. 
Geoscience Australia and the Japan Agency of Marine Earth Science and Technology have been collaborating since 2014 with the goal to collect deep rock cores from a northern Zealandia basin. Analysis of these rock cores will unlock a 100-million-year history of geology, tectonics, past climate, and even ancient microbial life.
A proposal for scientific drilling to several kilometres below the seafloor - the first of its kind in Australia’s maritime jurisdiction - has been approved by the International Ocean Discovery Program, one of the world’s longest running and most successful scientific collaborations. If this innovative scientific drilling is funded, it will open up many new opportunities for Australian, Japanese and international researchers to study Earth processes, climate dynamics, and the limits of life on Earth.

Tags: EARTH SCIENCES, Research Collaboration, Zealandia, deep rock cores, scientific drilling
Organization: Geoscience Australia Data
The ecology and morphology of sponges and octocorals in the northeastern Joseph Bonaparte Gulf

The Joseph Bonaparte Gulf (JBG) is an offshore area in northern Australia, with active petroleum exploration and infrastructure development. The Van Diemen Rise, an area of raised banks and channels in the northeastern region of the JBG, has been proposed for protection as part of the Oceanic Shoals Commonwealth Marine Reserve. However, baseline information for much of this area is lacking, including spatial and environmental patterns of biological communities. This study uses still imagery of the sea floor in four study areas across the Van Diemen Rise, collected during two seabed mapping surveys conducted by Geoscience Australia and the Australian Institute of Marine Science, in 2009 and 2010. Based on these analyses benthic communities are characterised, and important species and morphological groups are compared with a number of abiotic variables. In so doing, a preliminary assessment is given as to which abiotic variables make the most appropriate surrogates for characterising benthic communities in the region. A number of variables are found to correlate significantly and strongly with some of the biological groups determined in this study. Pheophytin, Si/Al and mud content correlate with the large habitat forming species Mopsella sp., Ianthella sp. and Xestospongia sp. respectively. Backscatter signals from multibeam sonar surveys correlate very strongly with depth and also to some degree with a number of the functional growth forms of sponges. Based on the positive results of this preliminary data investigation, it is recommended that non-linear modelling and robust multivariate analyses be applied to the data set to investigate more complex relationship. This study provides baseline information on the ecology and morphology of key habitat-forming organisms in the northeastern Joseph Bonaparte Gulf which will be facilitate marine monitoring programs for reserve management and environmental impact assessments for industry activity.

Tags: Earth Sciences, GA Publication, NERP, Published_External, Record, mapping, marine, marine biodiversity, marine survey
Organization: Geoscience Australia Data
The Mesozoic strata of Mt. Young 1:250 000 sheet area

Lower Cretaceous strata of Mt. Young 1:250,000 sheet area, were examined during 1960 and 1961 field seasons. Numerous field observations of lithologies and their sequences, and collections of fossils followed by the identification of fossils, and the dating of strata provided material for this Record. Macrofossil marine assemblages contain over 40 species, most of them new. There are also plant remains.

Tags: Earth Sciences, GA Publication, Published_External, Record, geology
Organization: Geoscience Australia Data