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  • Geoscience Australia's Oracle organic geochemical database comprises analytical results for samples relevant to petroleum exploration, including source rocks, crude oils and natural gases from both onshore and offshore basins. The data is non-confidential and available to the petroleum industry, research organisations and the public. The data are produced by a wide range of destructive analytical techniques conducted on samples submitted by industry under legislative requirements, as well as on samples collected by research projects undertaken by Geoscience Australia or other government agencies or institutions. Some of the results have been generated by Geoscience Australia's laboratory, whereas other data is compiled from service company reports, well completions reports and published papers. <b>Value: </b>These data comprise the raw organic geochemistry values generated for Australian source rocks, crude oil and natural gases and is the only public comprehensive database at the national scale. The raw data are used as input to other studies, such as petroleum systems modelling, resource assessments and national mapping projects. Derived datasets and value-add products are created based on calculated values and interpretation to provide information on the subsurface petroleum prospectivity of the Australian continent. The data collection aspires to build a national-scale understanding of Australia's oil and gas resources. <b>Scope: </b>This data collection is useful to government for evidence-based decision making on natural energy resources and the petroleum industry for de-risking conventional and unconventional exploration programs. Results for many of the oil and gas samples held in the Australian National Offshore Wells Data Collection are included in this database.

  • This data set provides outlines for the maximum spatial extent of seabed geomorphic units for Australia's Exclusive Economic Zone, including the offshore island territories, but excluding Australian Antarctic Territory. Twenty-one geomorphic feature types were identified and mapped, following definitions published by the International Hydrographic Office (IHO, 2001). <b>Value: </b>The geomorphology of the seabed is used to constrained surface geology of the sea floor, important in resource exploration, marine zone management and for understanding the physical environment <b>Scope: </b>The area covered includes the seafloor within the Australian marine jurisdiction surrounding the Australian mainland and island territories of Christmas, Cocos (Keeling), Macquarie, and Norfolk Islands (Heap & Harris 2008).

  • Time series seismograph data recorded from Australian National Seismograph Network (ANSN) observatories in Australia, islands in the Pacific, Southern and Indian Ocean's and the Australian Antarctic Territory. <b>Value: </b>This data is used for earthquake monitoring, measurement, detection and location of earthquakes, which is valuable for emergency response, hazard modelling and mitigation. The dataset is also used to meet a subset of Australia's obligations to the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) to fulfil Australia's commitment to nuclear explosion monitoring. <b>Scope: </b>Observatories in Australia, islands in the Pacific, Southern and Indian Ocean's and the Australian Antarctic Territory

  • Digital Elevation Model (DEM) for bathymetry of areas of interest around Australia. These models have a 30m-resolution. <b>Value: </b>Bathymetry mapping of the seafloor is vital for the protection of the coastal region, allowing for the safe navigation of shipping and improved environmental management. <b>Scope: </b>Areas include: Northern Australia, Great Barrier Reef, and Bass Strait.

  • The national Tropical Cyclone Hazard Assessment (TCHA) defines the severe wind hazard posed to Australia based on the frequency and intensity of tropical cyclones making landfall around the Australian coastline. Contact us at hazards@ga.gov.au if you need further information. URL: https://www.ga.gov.au/about/projects/safety/tcha <b>Value: </b>The TCHA provides vital information to emergency managers, town planners and infrastructure owners to plan and reduce the threat of tropical cyclone hazard on the Australian coast, and for the insurance industry to understand the tropical cyclone risk as an input to pricing insurance premiums. The TCHA is a key data source to calculate local cyclone impact models for the development of evidence-based disaster management plans, evacuation plans or inform infrastructure planning or mitigation strategies. High risk areas can be identified and prioritised for further analysis, or to extract scenarios to explore risk mitigation and community safety at a local and regional level. The TCHA includes a catalogue of synthetic tropical cyclone events (including tracks and wind fields), hazard profiles for selected locations across Australia, and maps of annual recurrence interval (ARI) wind speeds due to tropical cyclones. Geoscience Australia provides essential evidence based information to government and emergency managers around Australia to improve our communities' ability to prepare for, mitigate against and respond to natural disasters. <b>Scope: </b>Continental scale.

  • Descriptions of and measurements from field sites and samples from geological (including regolith) surveys. <b>Value: </b>Used to constrained surface geology, important in resource exploration and understanding physical environment. <b>Scope: </b>Mapping surveys mainly in Australia, but also in Antarctica, Oceania and south-east Asia.

  • This is a collection of continuous seismic records gathered by temporal and semi-permanent seismic deployments where real-time data transmission was not available. Time spans vary from half an hour to more than a year depending on the purpose of the survey. Description of the employed instrumentation and array constellations can be found in the accompanied material. <b>Value: </b>Passive seismic data contains records of soil vibration due to the natural earth movements, ocean, weather, and anthropogenic activities. This data is used in ongoing research to infer national lithospheric structure from depth of a few meters to a hundred kilometres. Derived models are an important source of information for assessment of resource potential and natural hazard. <b>Scope: </b>Over time, surveys have been focused on areas of economic interest, current work of the Australian Passive Seismic Array Project (AusArray) is seeking to create a grid pattern, spaced ~55 km apart, and complemented by semi-permanent higher sensitivity broadband seismic stations. For more information about AusArray click on the following URL: <a href="https://www.ga.gov.au/eftf/minerals/nawa/ausarray">https://www.ga.gov.au/eftf/minerals/nawa/ausarray</a> <b>Data from phase 1 are available on request from clientservices@ga.gov.au - Quote eCat# 135284</b>

  • Magnetotellurics (MT) is a passive geophysical method which uses natural time variations of the Earth's magnetic and electric fields to measure the electrical resistivity of the sub-surface. Electrical resistivity is a bulk property of a volume of Earth material and is associated with factors such as rock composition, porosity and permeability as well as temperature and pressure. The Magnetotelurics (MT) Data Collection includes datasets from The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) and regional-scale MT surveys across the Australian continent. These data were collected by Geoscience Australia in collaboration with the State and Territory Geological Surveys and other partners. <b>Value: </b>Magnetotelluric data to expand the geoscientific understanding of the earth's lithospheric structure and provide new insights into Australia's onshore energy and mineral potential. <b>Scope: </b>AusLAMP is being conducted over multiple years to create a national MT dataset and map lithospheric structure of the Australian continent. MT data have also been acquired for mapping crustal structure and resource potential at regional scale. These data provide valuable information for multi-disciplinary interpretations. To view the magnetotellurics data via the Geoscience Australia internet page click on the following URL: <a href="https://www.ga.gov.au/about/projects/resources/regional-mt-program">https://www.ga.gov.au/about/projects/resources/regional-mt-program</a> For further information about the Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) click on the following URL: <a href="https://www.ga.gov.au/about/projects/resources/auslamp">https://www.ga.gov.au/about/projects/resources/auslamp</a>

  • Parametric dataset of earthquakes in the Australian region, with magnitudes greater than 2.5. Includes records of instrumentally recorded earthquakes and explosions, and earthquake parameters inferred from historic documents. Threshold magnitude of completeness varies spatially and temporally. <b>Value: </b>This data has historic value, and is used in assessment of earthquake hazard, risk and potential impacts from future events. <b>Scope: </b>A catalogue of known historical earthquakes in Australia and adjacent regions.

  • This collection contains all national level bathymetry grids held by Geoscience Australia (GA) dating back to survey data obtained since 1993. <b>Value: </b>Bathymetry data is used for a wide range of marine applications including: navigation, environmental assessment, jurisdictional boundaries, resource exploration. <b>Scope: </b>Data holdings lying within the offshore area of Australia, including international waters. <b>To access the AusSeaBed Marine Data Portal</b> use the following link: <a href="https://portal.ga.gov.au/persona/marine#/">https://portal.ga.gov.au/persona/marine#/</a>