AndreaBozzo/ceres-open-data-index huggingface dataset:
Coastal Waters (State/Territory Powers) Act 1980 - Australian Maritime Boundaries 2020 - Geodatabase

Geoscience Australia has the primary role in the delineation of Australia's domestic and international maritime limits and boundaries. An output of this activity is the development of the Australian Maritime Boundaries (AMB) data. AMB is a GIS data product, replacing Australian Maritime Boundaries 2014a (AMB2014a), providing access to the data for Australia's maritime zones. AMB is a digital representation of Australia's limits and boundaries as established under the Seas and Submerged Lands Act 1973 and associated proclamations. The data also include a representation of the limits by which the scheduled and offshore areas of each of the States and of the Northern Territory are determined under the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGSA). In the event of an inconsistency between AMB data and the limits under any legislation, the latter prevails. The data have been published by Geoscience Australia in consultation with other relevant Commonwealth Government agencies including the Attorney-General's Department, the Department of Foreign Affairs and Trade and the Australian Hydrographic Office. 

AMB data comprise the territorial straight baselines and the outer limits of each zone, together with maritime boundaries determined by treaties between Australia and neighbouring countries. All data coordinates are supplied in the GDA94 datum. The data reflects the location of the coastline within the constraints of available source material at the time of production. AMB Data can also be viewed on-line via AMSIS (http://www.ga.gov.au/marine/jurisdiction/amsis.html). Product Specifications Coverage: Australia including all external territories Currency: December 2020. Coordinates: Geographical Datum: GDA94 (functionally equivalent to WGS84). Format: ESRI Geodatabase and REST web service - free online.
The area of coverage of the AMB data is for the whole of the Australian marine jurisdiction which includes waters adjacent to the mainland, offshore islands and External Territories.  The geographical extent is approximately between the latitude limits of 7 S to 70 S and the longitude limits 40 E to 175 E.

This dataset includes the following disclaimer:
AMB data is a digital representation of the territorial sea baseline and of the outer limits of Australia's maritime zones.  The baseline and zones are established under the Seas and Submerged Lands Act 1973.  The data also includes a representation of the limits by which the waters adjacent to each of the Australian States and of the Northern Territory are determined under the Coastal Waters (State Powers) Act 1980, Coastal Waters (Northern Territory Powers) Act 1980 and the Offshore Petroleum and Greenhouse Gas Storage Act 2006.  In the event of an inconsistency between AMB data and the baselines and limits under the legislation, the latter prevails.

Tags: AU, GIS Dataset Thematic, Geospatial Information Systems, HVC_144653, Published_External, marine
Organization: Geoscience Australia Data
SI 1007 Abbot Point to Hydrographers Passage, QLD (HIPP) Bathymetry Acquisition (20200024S)

The Abbot Point to Hydrographers Passage bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the RV Escape during the period 6 Oct 2020 – 16 Mar 2021. This was a contracted survey conducted for the Australian Hydrographic Office by iXblue Pty Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases a section of Two-Way Route from Abbot Point through Hydrographers Passage QLD. Bathymetry data was acquired using a Kongsberg EM 2040, and processed using QPS QINSy. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC_144641, Oceans, Published_External, bathymetric grids, bathymetry, marine, multibeam
Organization: Geoscience Australia Data
Portsea Hole Port Phillip Bay Bathymetry 2018 (4895/20180003S)

The Portsea Hole bathymetry survey was acquired by Deakin University Marine Mapping lab onboard the Motor Vessel Yolla over two days in 2018 (20/01/2018-21/01/2018) using a Kongsberg EM2040c. This survey was collected as part of Parks Victoria project to map all the marine parks within Victorian state waters.

Not to be used for navigational purposes

Tags: AusSeabed, Australia-wide geoscience data, Bass Strait (Great Australian Bight), Bathymetry, EARTH SCIENCES, Great Australian Bight, MV Yolla, Marine, Offshore Mapping, Published_External, Resourcing Australia’s Prosperity, Southern Ocean, multi-beam echosounders
Organization: Geoscience Australia Data
Submerged Coral Reefs in the Gulf of Carpentaria, Australia

We report the discovery of three submerged, living patch coral reefs covering 80 km2 in the southern Gulf of Carpentaria, Australia, an area previously thought not to contain coral bioherms. The patch reefs have their upper surfaces at a mean water depth of 28.6Â±0.5 m, and were consequently not detected by satellites or aerial photographs. The reefs were only recognised in our survey using multibeam swath sonar supplemented with seabed sampling and under water video. Their existence points to an earlier, late Quaternary phase of framework reef growth, probably under cooler climate and lower sea level conditions than today. Submerged reefs with surfaces between 20 and 30 m water depth occur in other regions of the Earth and existing bathymetry indicates they could be widespread in the Gulf. Many tropical regions that today do not support patch or barrier reefs for reasons similar to the modern Gulf, may have done so in the past, when environmental conditions were more suitable. Submerged reefs may provide an important refuge for corals during the next few decades when near-surface reefs are threatened by widespread coral bleaching due to warmer global sea surface temperatures.

Tags: AU-NT, AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine
Organization: Geoscience Australia Data
Preliminary Evaluation of the Petroleum Potential of Australia's Central Eastern Margin

Australia's east coast north of Bass Strait has been very sparsely explored for petroleum. Exploration permits have been intermittently held over the offshore Sydney Basin, including an active permit at the time of writing, and some permits were held in north Queensland waters in the 1960s and 1970s, but much of the geology of this eastern continental margin is virtually unknown. This report provides a preliminary assessment of the petroleum potential of Australia's east coast, from the border between New South Wales and Victoria in the south, to the southern boundary of the Great Barrier Reef Marine Park (GBRMP) offshore southeast Queensland in the north. Petroleum exploration is prohibited within the GBRMP, and no assessment of this area is included in the report.

Palaeozoic basement rocks covered by a veneer of Cainozoic sediments underlie a large part of the study area (Figure 1). At least four sedimentary basins also underlie the continental shelf and probably the continental slope in the case of the Sydney and Maryborough Basins. These two basins are also the best known; but the Clarence-Moreton and Nambour Basins are also known to have offshore extensions on the shelf. It is also possible but not certain that the Ipswich and Lorne Basins could have offshore components, and there is some evidence of a pre-Clarence-Moreton Basin sedimentary sequence offshore of the Coffs Harbour area. In addition to these basins, several graben and half-graben associated with Tasman Sea rifting may occur within basement dominated shelf and slope areas - two of these features are known from very limited data.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, petroleum exploration
Organization: Geoscience Australia Data
Ashmore Reef and Cartier Island Marine Parks Satellite-Derived Bathymetry Acquisition (20220016S)

The Ashmore Reef and Cartier Island Marine Parks&nbsp;Bathymetry was derived by EOMAP form multispectral satellite data from WorldView-3 satellite sensor. This was acquired by the Australian Government as part of the Marine Parks Grant - Round 3, in 2022-2023 and undertaken by EOMAP Australia Pty Ltd and EOMAP GmbH &amp; Co.KG. The survey area encompasses the Ashmore Reef and Cartier Island Marine Parks in Western Australia. These critical geospatial data layers provide the essential environmental baseline information for the long-term monitoring and management of these Marine Parks. Mapping the shallow water zone is of importance both from an environmental and socioeconomic perspective. Having access to digital, georeferenced, high-resolution maps of bathymetry and benthic habitats of shallow water areas, is of fundamental use in the areas of navigation, ecological research, environmental modelling, management and conservation, and monitoring the impacts from climate change. Bathymetry data was processed using the physics-based inversion method to derive quantitative information of the shallow water bathymetry using the reflected sunlight energy in different wavelengths of the visible and near infrared region. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

Tags: AusSeabed, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography, HVC_144641, Oceans, Published_External, Satellite-Derived Bathymetry, WorldView-3, bathymetric grids, bathymetry, satellite-derived bathymetry (SDB)
Organization: Geoscience Australia Data
Notes on Australian Lower Cretaceous palaeogeography

A small collection of marine Lower Cretaceous Mollusca from Mount Samuel area, central Western Australia, consists of six genera and seven species which are known from the Roma Formation beds of the Great Artesian Basin. It is suggested that a communicating seaway existed between the Great Artesian Basin and Mount Samuel area during Aptian times. Migration of marine organisms probably took place along a southern route through Officer and Eucla Basins, but may have possibly proceeded directly to the west from Rumbalara. It is also suggested that at the same time another seaway existed between Mount Samuel area and the Dampier Peninsula.The sediments of the Great Artesian Basin occur in two areas in the Northern Territory, viz, in the vicinity and to the east of Rumbalara, at the southern extreme of the Northern Territory where they are of Aptian age and are correlated with beds of Roma Formation in Queensland; and up to about one hundred miles south of the Gulf of Carpentaria, close to the Queensland border, where they are of Aptian and of Upper Albian age and can be correlated with the Roma and Tambo Formation beds of Queensland.

Tags: Earth Sciences, GA Publication, Published_External, Record, palaeogeography
Organization: Geoscience Australia Data
AusSeabed: Three years of coordinating seabed mapping efforts - are we there yet?

<b>This record was superseded on 13/09/2024 with approval from Director, National Seabed Mapping as it has been superseded by eCat 149851.</b>

Australia’s marine jurisdiction covers over 10 million square kilometres, and we estimate that only 25% of its seafloor has been mapped to the adequate resolution required to support the sustainable development and management of our marine estate.  Considering that seabed mapping underpins most aspects of ocean sciences and engineering, and contributes strongly to Australia’s economic, environmental and social values, it is critical that we address this fundamental knowledge gap. 

AusSeabed was founded three years ago—a cross sector collaborative national program aimed at coordinating ocean mapping efforts to maximise benefits to stakeholders.  AusSeabed is working to address many challenges surrounding efficient data acquisition, quality assurance, processing and delivery to various end-users with an aim to eliminate duplication of effort and improve data quality and consistency across sectors. 

A fundamental component of the AusSeabed program is the design and development of a federated, cloud-based, open-source platform to address the whole supply chain from data acquisition to delivery.  Importantly, this work is enabling seamless collation of seabed mapping datasets and their integration with other marine data types from a variety of previously isolated and inaccessible holdings. 

Strong community commitment and a powerful resonance with stakeholders have driven rapid program growth and are a testament to the value of deliberate and effective collaboration for national benefit.

This presentation will give an overview of AusSeabed’s current progress, highlights and forward plan.

Tags: AusSeabed, EARTH SCIENCES, Published_External, Wednesday Seminar, mapping, ocean floors
Organization: Geoscience Australia Data
AusSeabed Bathymetry Compilations Coverage Database

The AusSeabed Bathymetry Compilations 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. Compilations have been generated from one or more Survey/Data Acquisitions by a wide range of organisations and countries, both inside and outside Australia's marine jurisdiction, using multiple systems and for various applications. Compilation 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 compilation details. 

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



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

Tags: AusSeabed, Earth Sciences, HVC_146413, Published_External, bathymetric grids, bathymetry, marine
Organization: Geoscience Australia Data
Australia's Maritime Jurisdiction around Macquarie Island - Lambert projection

Map showing Australia's Maritime Jurisdiction around Macquarie Island.
Based on Lambert Conformal Conic Projection.
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.
A0 sized portrait format .pdf downloadable from the web.

Tags: AU-TAS, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Geoscience Australia Data
Seafloor Bathymetry of Perth Canyon Marine Park

Bathymetry flythrough of Perth Canyon using data acquired by Schmidt Ocean Institute in 2015 on RV Falkor (University of Western Australia et al.). The flythrough highlights geomorphic features mapped by Geoscience Australia, including landslides, escarpments and bedform fields and biodiversity associated with the canyon (benthic and pelagic). Produced as a science communication product for the Marine Biodiversity Hub (National Environmental Science Program).

This research is supported by the National Environmental Science Program (NESP) Marine Biodiversity Hub through Project D1.

Tags: Marine Biodiversity Hub, National Environmental Science Program, Published_External, biodiversity, geomorphology, marine
Organization: Geoscience Australia Data
Houtman Sub-basin Geophysical Modelling Study

The Houtman Sub-basin geophysical modelling study is an integrated geological and geophysical interpretation of the GA-349 seismic survey. The key aims for the study were to improve the understanding of the crustal architecture of the Houtman Sub-basin and the distribution and thickness of magmatic rocks. 
The Houtman Sub-basin is a largely unexplored offshore depocentre in the northern Perth Basin on the western margin of Australia. It formed during two separate rifting episodes (Early- to Mid-Permian, Early Jurassic to Early Cretaceous) and may contain up to 19 km of sediment. The northern Houtman Sub-basin contains extensive breakup-related sill and dyke complexes, related to both the adjacent volcanic province of the Wallaby Plateau and the Wallaby Zenith Transform Margin (WZTM).
New 2D seismic reflection data obtained in 2014/15 (GA-349) is being used to re-assess the petroleum prospectivity of this frontier basin to underpin the possible future release of exploration acreage. A full understanding of petroleum prospectivity requires a clear picture of sediment thickness, the nature of basement, and the distribution of magmatic rocks, all of which influence the maturation of hydrocarbons and ultimately prospectivity.
Geoscience Australia seismic survey (GA-310) and marine sampling survey (GA-2476) conducted in 2008 and 2009 acquired a total of about 26,000 km of new gravity and magnetic data. This new gravity and magnetic data has been integrated and levelled with existing data, both offshore and onshore, to produce unified gravity and magnetic datasets for use in constraining regional tectonics, basin structure and petroleum prospectivity.
The purpose of this study is to use potential field modelling to: a) validate seismic interpretation of crustal structure (in depth), including Moho depth and depth to top crystalline basement; b) model density variations within the sedimentary section; c) model density and magnetic susceptibility variations within basement with an interpretation of basement composition (if possible) and; d) investigate the depth, extent and thickness of intrabasinal magmatic rocks identified on seismic data.

Tags: Basin Architecture, Crustal structure, Earth Sciences, Geophysical modelling, Houtman Sub-basin, Margin evolution, Perth Basin, Published_External
Organization: Geoscience Australia Data
National Gravity Compilation 2019 includes airborne tilt 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 includes airborne tilt image is derived from the 2019 Australian National Gravity Grids B series. These gravity data were acquired under the project No. 202008. The national grid has a cell size of 0.00417 degrees (approximately 435m). This gravity anomaly grid is derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented with 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. Airborne gravity and gravity gradiometry data were also included to provide better resolution to areas where ground gravity data was not of a suitable quality. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with Airborne Gravity surveys totaling 345,000 line km and 106,000 line km of Airborne Gravity Gradiometry 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 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. Airborne surveys have a line spacing ranging from 0.5 km to 2.5 km. Terrain corrections to gravity were calculated using both offshore bathymetry and onshore topography data. The image shows the tilt filter of the complete Bouguer anomalies (B series) over Australia and its continental margins.

Tags: Australia, B series, Bouguer, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, airborne, complete, digital data, geophysical survey, geophysics, gradiometry, grav, gravity, grid, image, marine, raster, round, satellite, spherical cap, survey 202008, tilt
Organization: Geoscience Australia Data
Microfossils and molecular fossils in Barnicarndy 1 core record the evolution of terrestrial and marine organisms in the early Ordovician Nambeet Formation, Canning Basin, Western Australia

Scientific studies undertaken on core from the Barnicarndy 1 well drilled in 2019 in the onshore Canning Basin in Western Australia as part of the Exploring for the Future program have shown that the well penetrated a thick section of the early Ordovician Nambeet Formation which contains abundant fossils reflective of deposition in an open marine environment. Although the calcareous shales are organically poor (average total organic carbon content 0.17 wt%) processing of 42 drill core samples recovered a plethora of acid-resistant, organic-walled microfossils. Seven core samples with the highest organic content were analysed for their molecular (biomarker) fossils and stable isotopic composition to provide insights into the type of organic matter preserved, and the redox conditions of the sediments during deposition.



This Abstract was submitted/presented to the 2022 Australian Organic Geochemistry Conference 27-29 November (https://events.csiro.au/Events/2022/October/5/Australian-Organic-Geochemistry-Conference)

Tags: Acritarchs, Barnicarndy 1, Canning Basin, EFTF – Exploring for the Future, Early plant spores (cryptospores), Exploration Geochemistry, Isotope Geochemistry, Kidson Sub-basin, Nambeet Formation, Ordovician, Organic Geochemistry, Palaeontology (incl. Palynology), Published_External
Organization: Geoscience Australia Data