AndreaBozzo/ceres-open-data-index huggingface dataset:
AusSeabed Bathymetry Survey Acquisitions Coverage Database

The AusSeabed Bathymetry Survey Acquisitions Coverage database contains polygon extents of bathymetry data acquisitions along with identifying attributes and contact details where the data is not held by Geoscience Australia.  It is an important scientific resource that identifies data spanning coastal, continental shelf and deep sea locations. 



This dataset is live and will continue to be augmented as coverage details are supplied from AusSeabed collaborators who wish to share their knowledge of data availability to the broader marine community. The database is updated regularly and is made available via the AusSeabed Marine Data Portal using OGC compliant web services. Surveys/Data Acquisitions have been conducted by a wide range of organisations and countries, both inside and outside Australia's marine jurisdiction, using multiple systems and for various applications. Data coverages are published where the polygon extents intersects with Australia's marine jurisdiction, including the Australian Antarctic Territory.  Each polygon in the layer contains metadata describing survey details. 

Note that polygons may not be representative of the true survey extent due to the data gridding process. 



For a list of source data contributions see Technical Lineage.
Please note that this public coverage does not include information that has been provided to Geoscience Australia under a Restricted and Exclusive license. However, the additional restricted information is used during the computation of Australian marine jurisdiction’s Percent Mapped assessment. 

Please contact us at ausseabed@ga.gov.au if you wish to contribute coverage information to the database.

Tags: AusSeabed, EARTH SCIENCES, HVC_144641, Published_External, bathymetry, marine
Organization: Australian Ocean Data Network
The Cape Range structure, Western Australia Pt 1: Stratigraphy and structure Pt 2: Micropalaeontology

The Cape Range Structure, which occupies the North-West Cape peninsula, is a closed anticline in Tertiary limestones. The structure is at least eighty miles long and twenty miles wide, and has a vertical closure of 1200 feet and a closed area of 1200 square miles. The physiography is a reflection of the structure-a young fold mountain with mainly consequent, closely-spaced, drainage. The Tertiary sediments were laid down in a shelf area of the southwestern arm of the Indo-Pacific geosyncline. Because of the stability of the adjoining Western Australian shield, they did not attain the thickness of the sediments laid down elsewhere in the Indonesian geosyncline, nor were they affected to the same extent by subsequent tectonic disturbance. Five Tertiary formations are exposed on the Cape Range-the lower Miocene (e-stage) Mandu Calcarenite (265 feet of chalky limestone), the lower Miocene (f1-stage) Tulki Limestone (225 to 420 feet of hard crystalline limestone) and the possibly lower Miocene (f1 to , ?f2stage). Trealla Limestone (18'0 feet of white crystalline limestone), constituting the Cape Range Group; and the possibly lower Miocene Pilgramunna Formation and possibly Pliocene Vlaming Formation, forming the Yardie Group (calcareous sandstone and fine conglomerate up to 300 feet thick). Beneath the Miocene limestones are probably at least 3,000 feet of Cretaceous and Eocene marine sediments and possibly up to 18,000 feet of Permian, Carboniferous, and Devonian marine sediments. In vertical closure and closed area the Cape Range Structure is' the largest in the Carnarvon (North-West) Basin. Potential drainage of oil is unrestricted on the west flank and on the northern two-thirds of the east flank. Further geophysical (gravity and seismic) investigations should be carried out so as to try to determine the thickness of sediments and the shape of the structure in depth.

Tags: AU-WA, Bulletin, Earth Sciences, GA Publication, Published_External, geology, stratigraphy, structural geology
Organization: Australian Ocean Data Network
Image Collection - RV Investigator Voyage IN2018_V06 - Status and recovery of deep-sea coral communities on seamounts in iconic Australian marine reserves

This data set contains the imagery collected on the Marine National Facility (MNF) RV Investigator voyage IN2018_V06, titled "Status and recovery of deep-sea coral communities on seamounts in iconic Australian marine reserves." The voyage took place from Hobart (TAS) to Hobart between November 23 and December 19, 2018, collecting imagery of benthic habitats together with oceanographic data.

Instrument(s) used to collect this data:
MRI Towed camera (MRITC)

Datasets include: 
Video (oblique forward view)
Stereo stills (oblique forward view)
Navigational data

Organization: Australian Ocean Data Network
National Gravity Compilation 2019 DGIR 0.5VD image

Gravity data measure 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 National Gravity Compilation 2019 DGIR 0.5VD image is produced from the 2019 Australian National Gravity Grids A series. These gravity data were acquired under the project No. 202008. The grid represented in this image has a cell size of 0.00417 degrees (approximately 435m). The %%MV_DATASETS/SURVEY_NAME% are derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented by offshore data sourced from v28.1 of the Global Gravity grid developed using data from the Scripps Institution of Oceanography, the National Oceanic and Atmospheric Administration (NOAA), and National Geospatial-Intelligence Agency (NGA) at Scripps Institution of Oceanography, University of California San Diego. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with marine data were used to generate this grid. The ground gravity data used in this grid has been acquired by the Commonwealth, State and Territory Governments, the mining and exploration industry, universities and research organisations from the 1940's to the present day. Station spacing for ground observations varies from approximately 11 km down to less than 1 km, with major parts of the continent having station spacing between 2.5 and 7 km. The grid shows the half vertical derivative of the de-trended global isostatic residual anomalies (A series) over Australia and its continental margins. The original DGIR was obtained by subtracting 3 quantities (i.e., the near-field isostatic correction, the far-field isostatic correction, and a first order trend correction) from Complete Bouguer Anomaly data (CBA) of the 2019 Australian National Gravity Grids A series. A half vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the DGIR grid of the 2019 Australian National Gravity Grids to produce the grid represented in this image.

Tags: 05vd, A series, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, de-trended, geophysical survey, geophysics, grav, gravity, grid, ground digital data, half vertical derivative, image, isostatic, marine data, raster, residual, satellite data, survey 202008
Organization: Australian Ocean Data Network
AGSO Journal vol.14 no. 4

Content:
1.Blake DH, Hoatson DM. Granite, gabbro, and migmatite field relationships in the Proterozoic Lamboo Complex of the East Kimberley region, Western Australia.
2.Black LP, Withnall IW. The ages of Proterozoic granites in the Georgetown Inlier of northeastern Australia, and their relevance to the dating of tectonothermal events. 
3.Wright D, le Poidevin S, Morrison G, Thomas R. Potential from enhanced oil recovery applications in Australia. 
4.Childs JS, McDonald PS. A preliminary overview of groundwater quality in the Northern Territory.
5.Lavering IH. Gradational benthic marine communities in the Early Carboniferous Rhipidomella fortimuscula Zone (Late Visean), New South Wales.
6.Macphail MK, Kellett JR. Palynostratigraphy of the Bookpurnong Beds and related Late Miocene-Early Pliocene facies in the central west Murray Basin. Part 1: Dinoflagellates.
7.Macphail MK, Truswell EM. Palynostratigraphy of the Bookpurnong Beds and related Late Miocene-Early Pliocene facies in the central west Murray Basin. Part 2: Spores and pollens.
8.Matsumoto T, Skwarko SK. Cretaceous ammonites from south-central Papua New Guinea.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Australian Ocean Data Network
A Geochemical Overview of Some Gippsland Basin Hydrocarbon Accumulations

In the 50 years since the first commercial discovery in 1965 at Barracouta-1, and 46 years since production commenced from the Barracouta field, a total of 16.5 TCF of gas, 4026 MMbbl of oil, 385 MMbbl of condensate and 752 MMbbl of LPG have been found in the Gippsland Basin (Estimated Ultimate Recovery, as at the end of 2012). Despite these extensive resources, all from CretaceousPaleogene Latrobe Group reservoirs, there are questions regarding the effective petroleum systems, contributing source rock units, and the migration pathways between source and reservoir. Resolution of these uncertainties is essential to improve our understanding of the remaining prospectivity and for creating new exploration opportunities, particularly in the eastern, less explored part of the basin, but also for mitigating risk for the potential sequestration of carbon dioxide along the southern and western flanks.
Geochemical fingerprinting of reservoir fluids has identified that the oil and gas originate from multiple sources. The most pervasive hydrocarbon charge into the largely produced fields overlying the Central Deep has a terrestrial source affinity, originating from lower coastal plain facies (Kingfish, Halibut, Mackerel), yet the oils cannot be correlated using source-related biomarker parameters to source rocks either within the Halibut Subgroup (F. longus biozone) at Volador-1, one of the deepest penetrations of the Upper Cretaceous section, or to older sections, penetrated on the flanks of the basin. However, within the underlying SantonianCampanian Golden Beach Subgroup an oil-source correlation has been established between the Anemone-1A oil and the marginal marine Anemone Formation (N. senectus biozone) at Anemone-1/1A and Archer-1. A similar correlation is indicated for the Angler-1 condensate to the Chimaera Formation (T. lilliei biozone) in the deepest section at Volador-1 and Hermes-1. In the Longtom field, gas reservoired within the Turonian Emperor Subgroup, potentially has a source from either the lacustrine Kipper Shale or the Albian portion of the Strzelecki Group. The molecular and carbon isotopic signatures of oil and gas from the onshore Wombat field are most similar to hydrocarbons sourced from the AptianAlbian Eumeralla Formation in the Otway Basin, also implicating a Strzelecki source in the Gippsland Basin. These results imply that sediments older than the Paleocene are significant sources of petroleum within the basin.

Presented at the the AAPG/SEG 2015 International Conference &amp; Exhibition set in Melbourne

Tags: CCS Gippsland, Carbon Capture and Storage (CCS), Exploration Geochemistry, Gippsland Basin, Green House Gas (GHG) assessment permits 2015, Isotope Geochemistry, Organic Geochemistry, Petroleum geochemistry, Published_External, biomarkers, crude oils, laboratory analyses, molecular composition, sediment-hosted energy resources, sediment-hosted resources, source rocks, stable isotopes
Organization: Australian Ocean Data Network
Fast Repetition Rate Fluorometry (FRRF) data collected on the RV L'Astrolabe from 11/11/2009 to 16/11/2009 (Dumont d'Urville - Hobart)

These data were collected on the RV L'Astrolabe (platform code: FHZI) from 11/11/2009 to 16/11/2009 on a trip from Dumont D'Urville to Hobart.

Maximum photochemical efficiency of photosystem II (PSII), also called maximum quantum yield of PSII (Fv/Fm), has become one of the most widely utilized fluorescence parameters in phytoplankton research. It represents the potential photochemical efficiency, which is the probability that the light energy captured by the photosynthetic apparatus is being utilized as photochemistry. Fv/Fm has been shown to have an instant response to variations in physical and chemical properties and is interpreted as a diagnostic of the overall health or competence of phytoplankton. Together with the absorption cross section area of PSII and chlorophyll concentration, it can be used to measure primary production (Cheah et al. 2011, Deep Sea Research).

Seawater from 3 m depth was supplied continuously from the ship’s clean seawater line. FRR fluorescence yields were measured continuously at 1 minute intervals in dark-adapted state (! 15 minutes dark-adaptation) using a flash sequence consisting of a series of 100 subsaturation flashlets (1.1 μs flash duration and 2.8 μs interflash period) and a series of 20 relaxation flashlets (1.1 μs flash duration and 51.6 μs interflash period).

Tags: Continents | Antarctica, Countries | Australia, Fast Repetition Rate Fluorometer (FRRF), Global/Oceans | Southern Ocean, Instrument's photomultiplier electronic sensitivity (1-256), Latitude, Longitude, Maximum quantum yield (Fv/Fm), Minimum fluorescence in the light chamber of the FRRF (also used as a proxy for biomass), Oceans | Ocean Temperature | Sea Surface Temperature, Oceans | Salinity/density | Salinity, Photosynthesis, connectivity between PSII reaction centres under actinic light, functional absorption cross section of PSII (measure of the proportion of light harvested for photoc, maximum fluorescence in the light chamber of the FRRF, maximum quantum yield of photosystem II ( (FmL - FoL) / FmL), primary production, time constant of electron transport from PSII to PSI, variable fluorescence (FmL - FoL)
Organization: Australian Ocean Data Network
Gravity Anomaly Grid of the Australian Region - 2009

This grid represents gravity anomalies of the Australian region. The grid combines accurate onshore gravity measurements, with satellite data over the offshore region. The cell values represent simple Bouguer anomalies at a density of 2.67 tonnes per cubic metre onshore and free-air anomalies offshore. The grid cell size is 0.5 minutes of arc, which is equivalent to about 800 metres.

Tags: Gravimetrics, Gravity Digital Data, National dataset, Non-standard scale, Published_External, dataset, geophysics, gravity
Organization: Australian Ocean Data Network
Mapping critical Australian sea lion habitat with animal-borne instruments (NESP MaC 2.6)

This project aimed to identify and map critical habitats for Australian sea lions (Neophoca cinerea) to assess the ecological value of different habitats, and identify risks to their populations. Video imagery, GPS, time-depth and accelerometer/magnetometer data was captured from eight adult female Australian sea lions from Olive Island (n=4) on the western Eyre Peninsula and Seal Bay (n=4) on Kangaroo Island in South Australia. Sea lions were instrumented with animal-borne cameras with integrated accelerometers/magnetometers (CATS Cam, 135 x 96 x 40 mm, 400 g) and satellite-linked GPS loggers with integrated time-depth recorders (SPLASH-10, Wildlife Computers, 100 x 65 x 32 mm, 200 g). Sea lions were sedated and anaesthetised and bio-logging instruments were glued to the pelage on the dorsal midline. Bio-logging instruments were recovered after a single foraging trip (~1-6 days).

The data collected in this project provides fundamental information on critical benthic habitats for Australian sea lions, the differences in foraging behaviour of individual sea lions, and their prey preferences. This information improves our understanding of threats to sea lion populations and will support future conservation actions to recover the species.

Tags: Accelerometer, Animal-borne video, Australian sea lion, Benthic habitats, Bio-logging, Continental shelf, Foraging behaviour, Habitat mapping, Magnetometer, National Environmental Science Program (NESP) Marine and Coastal Hub, Otariid, Pinniped, Predation, Satellite-linked GPS logger, Southern Australia, Time-depth recorder
Organization: Australian Ocean Data Network
Hydrodynamic modelling of coastal inundation

Modelling the effects on the built environment of natural hazards such as riverine flooding, storm surges and tsunami is critical for understanding their economic and social impact on urban communities. Geoscience Australia and the Australian National University are developing a hydrodynamic inundation modelling tool called ANUGA to help simulate the impact of these hazards.

Tags: Abstract, Earth Sciences, GA Publication, Published_External, marine, numerical modelling
Organization: Australian Ocean Data Network
AHO Reference Surfaces Rottnest 0.5m 2023 (20230019R)

The Rottnest Reference Surface was created from a bathymetry survey acquired for the Australian Hydrographic Office (AHO) on 11 December 2022. This surface was created from a contracted national reference survey adjacent to Rottnest Island, WA, collected for the purpose of calibrating multibeam echosounders. It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, using a Kongsberg EM2040P and processed using Caris HIPS &amp; SIPS. Separate grids in 0.5m and 2m resolution are provided for the two surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datums. The datasets were exported as 0.5m and 2m resolution, 32-bit floating point GeoTIFF grids.



This dataset is not to be used for navigational purposes.


Tags: AusSeabed, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC_144641, Multibeam, Oceans, Published_External, bathymetric grids, bathymetry
Organization: Australian Ocean Data Network
Kinetics of hydrocarbon generation from the marine Ordovician Goldwyer Formation, Canning Basin, Western Australia

Pyrolysis and bulk kinetic studies were used to investigate the hydrocarbon generation potential and source rock facies variability of the marine organic-rich rocks from the Middle Ordovician (Darriwilian) Goldwyer Formation in the Canning Basin, Western Australia. Rock Eval pyrolysis results for the analysed immature to mid-mature calcareous mudstones imply that the upper Goldwyer Sequence I samples contain oil-prone Type I kerogen, while the lower Goldwyer Sequence III samples comprise on average Type II/III oil- and gas-prone kerogen. This is supported by the pyrolysis gas chromatography (Py-GC) results that show the presence of homogenous organofacies in the Goldwyer Sequence I that comprise aliphatic molecular signatures, possibly attributed to the selective preservation of the lipid fraction derived from Gloeocapsomorpha prisca (G. prisca). The heterogeneous organofacies of the Goldwyer Sequence III contains aromatic moieties that are present in similar abundance as the aliphatic compounds. The calcareous claystones of the Goldwyer Sequence I have the capacity to generate paraffinic oil with low wax contents, whereas those of the Goldwyer Sequence III have generative potential for paraffinic-naphthenic-aromatic (P-N-A) low wax oils and gas and condensate.

The temperature for hydrocarbon generation for the Type I kerogen, assuming a constant geological heating rate of 3oC/Ma, is estimated to occur over a narrow interval between 145oC and 170oC for the Goldwyer Sequence I samples. Generation from the Type II/III kerogen occurs from 100°C to 160°C in the Goldwyer Sequence III samples which are significantly thermally less stable than observed for the Goldwyer Sequence I samples. The kinetics results for both sequences were used in standard thermal and burial history plots to evaluate their transformation ratio and hydrocarbon generative potential. This provided a basin-specific kinetic input for burial history modelling and a better constraint for kerogen transformation and hydrocarbon generation on the Broome Platform.

Citation: Lukman M. Johnson, Reza Rezaee, Gregory C. Smith, Nicolaj Mahlstedt, Dianne S. Edwards, Ali Kadkhodaie, Hongyan Yu,; Kinetics of hydrocarbon generation from the marine Ordovician Goldwyer Formation, Canning Basin, Western Australia, International Journal of Coal Geology, Volume 232, 2020, 103623, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2020.103623.

Tags: Canning Basin, Compositional kinetics, EARTH SCIENCES, Published_External, petroleum systems modelling input
Organization: Australian Ocean Data Network
Guiding research for the sustainable development, operation, and decommissioning of offshore wind farms in Australia

The development of Australia’s offshore renewable energy (ORE) industry can learn and benefit from decades of international experience and research. However, local knowledge of our unique receiving environment and the organisms that depend on it is critical for ensuring development minimises impacts on marine ecosystems. Long-term monitoring and adaptive management strategies that consistently evaluate and address environmental impacts of offshore wind farms will be necessary throughout the operational lifespan of ORE. This collaborative National Environmental Science Program project established an inventory of environmental and cultural data and best practice monitoring standards to support regulatory decision-making for ORE development for current proposed and declared areas: Hunter, Gippsland and Bass Strait, Illawarra, Southern Ocean and south-west Western Australia. We provide detail on 1) potential impacts of installation, operation, and decommissioning; 2) best practice standards for monitoring; 3) cultural and environmental values of Indigenous communities with links to development areas; 4) seabed geomorphology and habitat characterisation; potential interactions with oceanography and 5) the seasonality and distribution of interacting species. The inventory, which is available to the Government, proponents, and researchers, will improve the effectiveness of future research for the sustainable development of ORE in Australia.

Presented at the 2024 AMSA-NZMSS Conference Hobart Tas

Tags: Geomorphology and earth surface processes, NESP Project 3.3, Published_External, marine geomorphology, national environmental science program - NESP, ocean best practice, seabed mapping
Organization: Australian Ocean Data Network