AndreaBozzo/ceres-open-data-index huggingface dataset:
BRUVS (TM) - Fish and Benthic survey of Timor Sea Shoals 2002-05-27 to 2002-06-02

The dataset comprises 87 individuals from 13 species of fishes, sharks, rays and sea snakes observed at around Timor Sea Shoals using 1 baited remote underwater video stations (BRUVS(TM)). 11 images were captured from these cameras.

Approximately 3500 of the best images from all BRUVS (TM) projects are stored in a reference library.

Data recorded concern:
- classification of the habitat in the field of view (topography, sediments, benthos)
- the identity of fish and CAABCODES
- their time of arrival
- their behaviour (8 categories, including feeding on the bait)
- their maturity (adult or juvenile)
- their relative abundance (as MaxN = the maximum number visible at one time, or distinguishable at different times as separate individuals e.g. much larger/smaller, male/female)
- the time elapsed before MaxN and feeding occurs.

A custom interface has been developed by AIMS staff, using Microsoft Access, for reading and analysis of BRUVS(TM) tapes.

Organization: Australian Ocean Data Network
Sedimentation and continental slope processes in the vicinity of an ocean waste disposal site, southeastern Tasmania

Digital echo sounding, SeaBeam swath bathymetry data and sediment cores were collected on the continental slope off southeastern Tasmania in order to study sedimentary processes in the vicinity of an ocean disposal site.

Tags: AU-TAS, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, continental margins, marine, marine survey, sedimentology
Organization: Australian Ocean Data Network
A compilation of grainsize, biogenic silica and carbonate data from East Antarctic surface sediments

Sediment grainsize and compositional data is presented for the East Antarctic region (30-150ÂºE) south of 60ÂºS to provide insight into the nature of habitats available for benthic communities. This compilation of sedimentary properties incorporates data collected and analysed from the 1950s to 2012. Sediment grainsize data is presented from quantitative analyses (472 samples) and Folk classifications (an additional 192 samples), and composition data is presented for calcium carbonate (255 samples) and biogenic silica (304 samples). 

Sedimentary properties are a key environmental layer for understanding the nature and diversity of benthic habitats. In this report, sediment grainsize and composition data are overlain on maps of bathymetry and geomorphic features, to further illustrate key variations in seabed habitats. The Antarctic shelf is typically dissected by deep troughs and channels, and these form sediment depocenters for fine grained biosiliceous material. Shelf banks, by contrast, are typically composed of coarser sands and gravels due to their exposure to stronger currents and frequent iceberg scouring. The continental slope is heavily eroded into rugged canyons which also contain coarser sediments due to reworking by down slope processes. In several regions, high carbonate content occurs at the shelf break, associated with areas of known hydrocoral occurrence. These variations in physical properties across the Antarctic shelf and slope create distinct habitats for seabed communities. Maps of sediment type, together with broader-scale maps of geomorphic features, can therefore guide understanding of the nature and distribution of seabed habitats in East Antarctica, and particularly within the seven proposed Marine Protected Areas (MPAs) within this region. Sedimentary and geomorphic properties are shown to be highly variable within these MPAs, indicating that these areas likely support a wide variety of benthic communities.

Tags: AQ, Environmental Science and Management, GA Publication, Published_External, Record, antarctica, marine, sedimentology
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction off the Australian Antarctic Territory (East)

Map showing Australia's Maritime Jurisdiction off the eastern portion of the Australian Antarctic Territory.
One of the 27 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).
Depicting Australia's extended continental shelf approved by the Commission on the Limits of the Continental Shelf in April 2008 and various maritime zones.  Background bathymetric image is derived from a  grid by Smith and Sandwell, 1997. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
A0 sized .pdf downloadable from the web.

Tags: AQ, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine jurisdiction
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction in the Tasman Sea

Map showing Australia's Maritime Jurisdiction in the Tasman Sea.
One of the 27 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).
Depicting Australia's extended continental shelf, approved by the Commission on the Limits of the Continental Shelf in April 2008, treaties and various maritime zones.  Background bathymetric image is derived from a combination of the 2009 9 arc second bathymetric and topographic grid by GA and a grid by Smith and Sandwell, 1997. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
A0 sized .pdf downloadable from the web.

Tags: Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Australian Ocean Data Network
Produced Formation Water Discharge from a Production Platform to the North West Shelf. 1995. Marine Survey 152

During September 1995, the Australian Geological Survey Organisation and the Australian Institute of Marine Science took part in a joint survey aboard the 'Lady Basten' to monitor the dispersion, fates and effects of Produced Formation Water (PFW) discharged from the Harriet 'A' production platform on the North West Shelf.

The AGSO component of the work involved using Continuous Geochemical Tracer (CGT) analysis of specific light hydrocarbons (C1-C6, benzene and toluene) to map the shape and extent of the discharged PFW plume in surface waters at 2 m. depth.

Hydrographic parameters including water temperature, dissolved oxygen, pH, salinity and turbidity were also continuously profiled. Four hydrocarbon vertical profiles were completed at various distances from the platform and several surface water samples collected for isotopic analysis. The profIling was conducted at speeds of 2 to 8 knots resulting in a typical data-point spacing of 180 metres. A total of 993 line kilometres of geochemical and hydrographic data were collected during the survey period in a tidal range which varied from 1.5 to 3.0 metres.

Tags: Earth Sciences, GA Publication, Published_External, Record, marine
Organization: Australian Ocean Data Network
Geophysical Studies of Australia's Remote Eastern Deep-Water Frontier: Results from the Capel and Faust Basins

The Capel and Faust Basins in Australia's remote eastern offshore frontier, 800 km east of Brisbane in 1000-3000 m of water, are being studied as part of the Australian Government's Energy Security Initiative. A variety of geophysical data has been obtained and efforts are currently focussed on integrated interpretation of 2D seismic reflection data, sonobuoy refraction data and marine potential-field data. 

Negative residual gravity anomalies generally correlate with basins evident in the seismic reflection data. The anomalies highlight elongate, roughly N-S-trending or arcuate depocentres, with limited strike extent, that are best developed in the north and northwest of the survey area where increased crustal extension appears to have occurred. The 20-50 km separation between 2D seismic lines and the isolated nature of the basin depocentres complicates the process of linking structures between lines, but 3D mapping of faults and horizons is facilitated by the potential-field data. Instead of correlating with depocentres and basement highs, reduced-to-pole positive magnetic anomalies may reflect the distribution of volcanics and intrusives, variably evident as high-amplitude or low-frequency reflectors, and volcanic features at or near the seafloor. 

Interpretation of the seismic reflection data suggests the presence of four main syn-rift megasequence packages (?Early Cretaceous-?Santonian) and several post-rift sag packages (?Early Campanian-Recent). Maximum unequivocal depocentre thickness is ~4s TWT. Forward and inverse modelling of the gravity and magnetic data in 3D is providing a means to characterise different basement terranes and to construct surfaces that represent the sequence boundaries within the depocentres.

Tags: 3D model, Abstract, Earth Sciences, External Publication, Published_External, geophysics, marine survey, petroleum exploration
Organization: Australian Ocean Data Network
Australia's Identified Mineral Resources 2010

Australia's Identified Mineral Resources 2010 presents estimates of Australia's mineral resources at end of December 2009 for all major and several minor mineral commodities (Table 1) based on published and unpublished data available to Geoscience Australia. These resource estimates provide a long term view of what is likely to be mined.  They are compared with national totals of ore reserves for each commodity, which provides the industry view of what is likely to be mined in the short to medium term.  Mine production data are based on figures from the Australian Bureau of Agricultural and Resource Economics and Sciences.  World ranking of Australia's mineral resources have been calculated mainly from information in publications of the United States Geological Survey.  A summary of significant industry developments also is presented.  

Australia's Identified Mineral Resources 2010 provides information on and analysis of mineral exploration expenditures in Australia for 2008-09 and the calendar year 2009.  Trends in expenditure are presented and discussed.

Tags: AU, Earth Sciences, GA Publication, Published_External, Report, geoscience, marine, mineral deposits, resource assessment
Organization: Australian Ocean Data Network
The stratigraphy of the Tertiary marine rocks in Gippsland, Victoria

This Bulletin presents the results of detailed studies of the Tertiary marine sequence in Gippsland, Victoria.  Most of the information used in it has been obtained as a result of scout drilling jointly by the Victorian and Commonwealth Governments and of wildcat drilling by private companies.  Though primarily a detailed study of a local problem, the results cannot frail to have an important bearing on the stratigraphy of the Tertiary rocks in the Australasian region and this in turn will facilitate the study of problems involving palaeogeography and correlation with extra Australian areas.  The results will also have an important bearing on a major economic problem the search for oil in Australia.

Tags: AU-VIC, Bulletin, Earth Sciences, GA Publication, Published_External, marine, stratigraphy
Organization: Australian Ocean Data Network
Benthic sediment surveys of inner Darwin Harbour and shallow water areas in and around Bynoe Harbour (2017): GA0358 and GA0359 – Post-survey report

Benthic sediment sampling surveys in inner Darwin Harbour (GA0358) and shallow water areas in and around Bynoe Harbour (GA059) were undertaken in the period from 29 May to 16 August 2017. Partners involved in the surveys included Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Department of Environment and Natural Resources within the Northern Territory Government (NT DENR) (formerly the Department of Land and Resource Management (DLRM)). These surveys forms part of a four year (2014-2018) science program aimed at improving knowledge about the marine environments in the regions around Darwin and Bynoe harbour’s through the collection and collation of baseline data that will enable the creation of thematic habitat maps to underpin marine resource management decisions. This project is being led by the Northern Territory Government and is funded by the INPEX-led Ichthys LNG Project, in collaboration with - and co-investment from GA and AIMS. The program builds upon an NT Government project (2010-2011) which saw the collection of baseline data (multibeam echosounder data, sediment samples and video transects) from inner Darwin Harbour (Siwabessy et al. 2015). Here we present an account of the field methods and data summaries (location maps and comprehensive metadata) for the collection of 285 seabed sediment samples designated for grain size and inorganic elemental analyses, and organic matter concentration, source and reactivity measures. Metadata is also provided for seagrass and hardground observations. The seagrass observation data have been incorporated into DENR’s seagrass database. The baseline environmental datasets acquired during these surveys will be merged with like datasets from three other surveys conducted (i.e. GA0351/SOL6187, GA4452/SOL6432 and GA0356) as part of the overall project to create a set of interpolated maps of abiotic parameters with full coverage for the region. Some of the maps will be integrated into final habitat mapping products. Baseline data from the surveys will also be made publically available via the Geoscience Australia website ( http://www.ga.gov.au/ ).

Tags: Bynoe Harbour, Darwin Harbour, EARTH SCIENCES, Published_External, benthic, sediment
Organization: Australian Ocean Data Network
Geology and mineral deposits of The Granites-Tanami and Tennant Creek Inliers, Northern Territory

The Palaeoproterozoic Tennant Creek Inlier (TCI) and The Granites-Tanami Inlier (GTI) share similarities in their stratigraphy and tectonic evolution. Both are characterised by a sequence of flysch sediments and volcanics that accumulated in an intracratonic transtensional basin which was deformed (D1), metamorphosed and intruded by syn-orogenic I-type granitoids during the Barramundi Orogeny.  Fluvial to shallow marine sediments, accompanied by felsic volcanism (plus mafics in the Davenport province) and penecontemporaneous subvolcanic intrusive activity, were deposited unconformably over the early rift sequence.  Two episodes of mild deformation (D2 and D3) folded and faulted the sequence to produce basin and dome structures which were subsequently intruded by biotite-muscovite granites.  Gold is the most important mineral commodity mined within both the inliers.  It is concentrated in deposits which have a regional stratigraphic control (Mount Charles beds- GTI, Warramunga Formation ironstones- TCI) in combination with various structural controls at the local scale. The origin of the Au mineralising fluids is uncertain. Late felsic intrusives associated with the Barramundi Orogeny probably contributed magmatic fluid at the Au-Cu-Bi depositional stage at Tennant Creek, although a significant metamorphic fluid component is also evident. Vein quartz-hosted W, Au, Cu, Bi , U, Ag/Pb mineralisation in the Davenport province is within volcanics and sediments of the Ooradidgee Subgroup, and igneous intrusives (mainly gabbro/dolerite). The metal-bearing hydrothermal fluids are inferred to emanate from post-orogenic two-mica granites.

Tags: Earth Sciences, GA Publication, Journal, NT, Published_External
Organization: Australian Ocean Data Network
Temporal and fine-scale variation in the biogeochemistry of Jervis Bay

The identification of suitable abiotic surrogates for biological diversity requires the collection of both physical and biological data. However, logistical constraints often preclude experimental designs that incorporate spatial and temporal replication. Given the quite limited resources normally available for surveys, the investigation of appropriate surrogates involves a trade-off between overall spatial coverage and replication. We have completed a survey in Jervis Bay in which environmental and infaunal data were collected contemporaneously in order to be combined with similar data from a previous winter survey (survey number GA309) to investigate variation across seasons. Because there will be a certain error in sampling at the exact location as the previous survey, the survey design also required that replicate samples be taken at a set number of stations in order to investigate fine-scale variability (at the scale of metres).

We used grabs to collect paired geochemical and biological samples from thirty-two stations in a defined grid near Darling Rd; at eight of these stations we deployed three pairs of grabs to investigate fine-scale variability. Due to good weather and extra ship time available, we also deployed a CTD to investigate vertical temperature and salinity profiles at each station in the Darling Rd grid, as well as at stations throughout the entire bay. Samples are expected to be processed and analysed by late 2009, but preliminary results indicate that most physical variables and infaunal assemblages varied between seasons. In addition, variation among infaunal assemblages seems greater among stations (hundreds of meters) than within replicates at stations (meters).

Tags: AU-NSW, CERF, Earth Sciences, GA Publication, Published_External, Record, marine, marine park, marine survey, organic geochemistry, salinity
Organization: Australian Ocean Data Network
Bioregionalization of the George V Shelf, East Antarctica

The East Antarctic continental shelf has had very few studies examining the macrobenthos structure or relating biological communities to the abiotic environment. In this study, we apply a hierarchical method of benthic habitat mapping to Geomorphic Unit and Biotope levels at the local (10s of kilometers) scale across the George V Shelf between longitudes 1421E and 1461E. We conducted a multi-disciplinary analysis of seismic profiles, multibeam sonar, oceanographic data and the results of sediment sampling to define geomorphology, surficial sediment and near-seabed water mass boundaries.

Tags: AQ, Antarctic data, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, abiotic surrogates, marine
Organization: Australian Ocean Data Network
Videos, images, and bathymetry from GA0337 (Flinders Commonwealth Reserve survey)

A survey of the Flinders Commonwealth Marine Reserve (GA survey 0337) was conducted aboard the R.V. Challenger between Tuesday, August 7th 2012 and Thursday, August 16th 2012, in collaboration with CSIRO Hobart and the University of Tasmania as part of GA's commitment to the National Environmental Research Programme (NERP)'s Marine Biodiversity Hub (Theme 1).  The survey collected video using a lightweight towed camera system, as well as footage from a camera mounted on the Smith-MacIntyre sediment grab. Bathymetry data was collected using GA's EM3002 system running in single head mode.

The aims of the survey were to characterize benthic habitat in the Flinders Commonwealth Marine Reserve using a Generalized Random Tessellation Stratified (GRTS) sample design.

The camera files are organized according to date collected and are labelled using the camera shot number and GRTS sample number.

Tags: Earth Sciences, HVC_144640, Multimedia, NERP, Published_External, marine
Organization: Australian Ocean Data Network
Permian polyzoa from the Bowen Basin

The Bowen Basin is a large triangular synclinal structure 350 miles long, occupying an area of about 20,000 square miles in eastern Queensland (Text-fig. 1). It is composed of Permian and Triassic sediments and volcanics resting unconformably on Upper Carboniferous or older rocks. To the southeast and southwest, the sediments dip under the Mesozoic strata of the Great Artesian Basin. Permian Polyzoa of the Bowen Basin belong to over 30 species and 16 genera of the Orders Cyclostomata, Trepostomata, and Cryptostomata. Four species, Fenestella bowenensis, F. springsurensis, Fenestella sp. nov., and Saffordotaxis multinodata, are regarded as being new. Twelve of the genera have been recorded previously from the Permian of Western Australia, and most of them are not known from the Permian of New South Wales and Tasmania. Thus a short-lived marine connexion with Western Australia is envisaged in the northern part of the continent.

Tags: AU-NT, AU-WA, Bulletin, Earth Sciences, GA Publication, Published_External, palaeontology
Organization: Australian Ocean Data Network
South-west Corner Marine Park survey – backscatter (GA-4858)

This resource includes seabed backscatter data for South-west Corner Marine Park collected by Geoscience Australia during the periods 9 – 12 March 2020 and 27 January – 16 February 2021 on the charter vessel Santosha. The survey was undertaken as a collaborative project with the University of Western Australia, the University of Tasmania and the Australian Centre for Field Robotics (University of Sydney) and funded through the National Environmental Science Program Marine Biodiversity Hub, with co-investment by all partners and the Director of National Parks. The purpose of the project was to build baseline information for benthic habitats on the continental shelf in the marine park that will support ongoing environmental monitoring within the South-west Marine Park Network as part of the 10-year management plan (2018-2028). Data acquisition for the project included multibeam bathymetry and backscatter for an area covering 330 km^2 offshore from Cape Naturaliste to Cape Leeuwin coast, with underwater imagery of benthic communities and demersal fish collected by University of Western Australia on separate field deployments. This backscatter dataset contains a 4 m resolution 32-bit geotiff file of the survey area produced from the processed Kongsberg EM2040C multibeam sonar system data using the CMST-GA MB Process v15.04.04.0 (.64) toolbox software co-developed by the Centre for Marine Science and Technology at Curtin University and Geoscience Australia. For further information see: Giraldo-Ospina, A. et al., 2021. South-west Corner Marine Park Post Survey Report. Report to the National Environmental Science Program, Marine Biodiversity Hub.

Tags: AusSeabed, Backscatter, Backscatter grids, EARTH SCIENCES, Marine, Multibeam, Published_Internal
Organization: Australian Ocean Data Network
Palaeogeographic maps for South Perth Shale Supersequence in the Vlaming Sub-basin (Perth Basin) with the implications for its sealing potential

In 2011 as part of the National CO2 Infrastructure Plan (NCIP), Geoscience Australia started a three year project to provide new pre-competitive data and a more detailed assessment of the Vlaming Sub-basin prospectivity for the storage of CO2. Initial assessment by Causebrook 2006 of this basin identified Gage Sandstone and South Perth Shale (SPS) formations as the main reservoir/seal pair suitable for long-term storage of CO2. SPS is a thick (1900 m) deltaic succession with highly variable lithologies. It was estimated that the SPS is capable of holding a column of CO2 of up to 663m based on 6 MICP tests (Causebrook, 2006). The current study found that sealing capacity of the SPS varies considerably across the basin depending on what part of the SPS Supersequence is present at that location. Applying a sequence-stratigraphic approach, the distribution of mudstone facies within the SPS Supersequence, was mapped across the basin. This facies is the effective sub-regional seal of the SPS. Analysis of the spatial distribution and thickness of the effective seal is used for characterisation of the containment potential in the Vlaming Sub-basin CO2 storage assessment.

Tags: AU-WA, Earth Sciences, GA Publication, Poster/Image, Published_External, geological storage of CO2, marine, palaeogeography
Organization: Australian Ocean Data Network