Geoscience Australia carried out a marine survey on Carnarvon shelf (WA) in 2008 (SOL4769) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Australian Institute of Marine Science (AIMS) Research Vessel Solander. Bathymetric mapping, sampling and video transects were completed in three survey areas that extended seaward from Ningaloo Reef to the shelf edge, including: Mandu Creek (80 sq km); Point Cloates (281 sq km), and; Gnaraloo (321 sq km). Additional bathymetric mapping (but no sampling or video) was completed between Mandu creek and Point Cloates, covering 277 sq km and north of Mandu Creek, covering 79 sq km. Two oceanographic moorings were deployed in the Point Cloates survey area. The survey also mapped and sampled an area to the northeast of the Muiron Islands covering 52 sq km. cloates_3m is an ArcINFO grid of Point Cloates of Carnarvon Shelf survey area produced from the processed EM3002 bathymetry data using the CARIS HIPS and SIPS software

Geoscience Australia has recently completed the Bonaparte CO2 Storage Project, a regional assessment of the CO2 storage potential of the Petrel Sub-basin. In 2009, two greenhouse gas assessment areas were released, PTRL-01 and PTRL-02, under the Offshore Petroleum and Greenhouse Gas Storage Act (2006). Both are proximal to the developing LNG market in Darwin, as well as a number of hydrocarbon accumulations in the Bonaparte Basin. These permits define the area of interest for the project.   A key component of the project was geological modelling to test CO2 injection scenarios. Initial 3D seismic horizon surfaces were generated to create a 'simple' geological model. A 'complex' geological model was then built by integrating a structure model, which was depth converted. Subsequently, the model was populated with reservoir properties such as V(shale), porosity and permeability. Palaeogeography maps were generated for all pertinent stratigraphic units and were used to populate the model where well control was lacking.   Using Permedia- modelling software, CO2 migration simulations with randomly located injection wells were run on a high resolution model to study the migration pathways, major accumulations and the effects of vertical anisotropy. Smaller areas of interest were then identified to reduce the size of the model and allow fluid flow reservoir simulations study using CMG-GEM'. The simulation study estimated the practical injectivity, storage volume, reservoir pressure during and after CO2 injection.

Geoscience Australia carried out a marine survey on Carnarvon shelf (WA) in 2008 (SOL4769) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Australian Institute of Marine Science (AIMS) Research Vessel Solander. Bathymetric mapping, sampling and video transects were completed in three survey areas that extended seaward from Ningaloo Reef to the shelf edge, including: Mandu Creek (80 sq km); Point Cloates (281 sq km), and; Gnaraloo (321 sq km). Additional bathymetric mapping (but no sampling or video) was completed between Mandu creek and Point Cloates, covering 277 sq km and north of Mandu Creek, covering 79 sq km. Two oceanographic moorings were deployed in the Point Cloates survey area. The survey also mapped and sampled an area to the northeast of the Muiron Islands covering 52 sq km.. gnaraloo_3m is an ArcGIS layer of the backscatter grid of the Gnaraloo survey area produced from the processed EM3002 backscatter data of the survey area using the CMST-GA MB Process

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This metadata encompasses the files contained within the "ga_gravity_models" directory of the CD-ROM. This dataset provides images of crustal profiles across the offshore parts of the Otway Basin, southeastern Australia. These profiles were constructed in 2004 to help improve our understanding of basement topography. Profiles were created using gravity and depth converted seismic data. Four seismic lines were interpreted from AGSO Survey 137 and four seismic lines from AGSO Survey 48. These interpretations were then used to guide the gravity modelling. The files contained within this directory are listed below. The first three numbers in the file name identify which survey the profile belongs to, and the last two digits identify the seismic line number. 13703.tif 13704.tif 13707.tif 13709.tif 04808.tif 04812.tif 04843.tif 04844.tif

A prospectivity assessment of the offshore northern Perth Basin, Western Australia, was undertaken as part of the Australian Goverment's Offshore Energy Security Program.

There are 239 permanent survey markers (PSM) located on Christmas Island. The permanent survey markers layer (psm_ci_2011) shows the locations of the markers. The attributes of the shapefile include the PSM name, location in various coordinate reference systems, PSM type, elevation and details of the last update for each point.

These colour and greyscale images are digital pictorial representations of the grid of the Magnetic Anomaly Map of Australia (third edition). This grid was compiled from 9 million line-kilometres of TMI data held in the National Airborne Geophysics Database. The data were collected in surveys conducted by AGSO (formerly the Bureau of Mineral Resources, Geology and Geophysics (BMR))and by airborne geophysical companies operating under contracts to AGSO and State and Territory Geological Surveys, either separately or in joint projects. Data from a number of other surveys, carried out for private companies, were acquired by AGSO. These images contain anomalies with wavelengths as small as 6400 m. The original grid data with a cell size of 15 seconds of arc (about 400m) used for the preparation of these images are available from AGSO in digital form for the whole continent, and on an individual 1:1 000 000 sheet area basis. Point located data are available on a survey basis.

This data represents the averaged topographic relief for the Australian continent, the Australian continental shelf, and the Australian continental slope.

OBS experiments in Australia have been limited so far, with the only data set collected by Geoscience Australia in 1995-1996 on a number of coincident reflection/refraction seismic transects across the NW Australian Margin. In 2013 Australia, for the first time in its history, will obtain a National Pool of ocean-bottom seismographs (OBS) suitable for multi-scale experiments at sea and for onshore-offshore combined observations. Twenty broadband OBS were purchased for short and long term deployment (up to 12 months) to a maximum water depth of 6 km. The instruments will be made available to Australian researchers via ANSIR, with only the costs of mobilization and deployment to be met. It is anticipated that the OBS facility will greatly enhance the research capabilities of Australian scientists in the area of Earth imaging, off-shore exploration and natural hazard assessment.