This preliminary report will provide a geochemical and ionic characterisation of groundwater, to determine baseline conditions and, if possible, to distinguish between different aquifers in the Laura basin. The groundwater quality data will be compared against the water quality guidelines for aquatic ecosystem protection, drinking water use, primary industries, use by industry, recreation and aesthetics, and cultural and spiritual values to assess the environmental values of groundwater and the treatment that may be required prior to reuse or discharge.

Extended abstract for APPEA 2013 poster

This use of this data should be carried out with the knowledge of the contained metadata and with reference to the associated report provided by Geoscience Australia with this data (Reforming Planning Processes Trial: Rockhampton 2050). A copy of this report is available from the the Geoscience Australia website (http://www.ga.gov.au/sales) or the Geoscience Australia sales office (sales@ga.gov.au, 1800 800 173). This file identifes the storm tide inundation extent for a specific Average Recurrence Interval (ARI) event. Naming convention: SLR = Sea Level Rise s1a4 = s1 = Stage 1(extra-tropical storm tide), s2 = Stage 2 (tropical cyclone storm tide) (relating to Haigh et al. 2012 storm tide study), a4 = area 4 and a5 = area 5 2p93 = Inundation height, in this case 2.93 m Dice = this data was processed with the ESRI Dice tool.

This metadata contains the infomation for the follow directories and files: All data is in raster format.

This metadata encompasses the "wells" directory of the CD-ROM which contains the file wells.shp. This dataset contains petroleum exploration and development wells drilled in the Otway Basin region (see GEOGRAPHIC BOUNDING BOX) taken from Geoscience Australia's database called 'PEDIN'.

Geoscience Australia is currently focused on delivering pre-competitive data to support the regional assessment of CO2 storage prospectivity in the Petrel Sub-basin, as part of the Australian Government's National Low Emission Coal Initiative. In this context, Geoscience Australia, in collaboration with the Australian Institute of Marine Science (AIMS), completed a marine survey in two targeted areas of the Petrel Sub-basin in May 2012. Data acquired onboard the AIMS research vessel, Solander included 652.3 km2 of high resolution multibeam sonar bathymetry and 655 line-kilometres of multi-channel sub-bottom profiles. Sampling at pre-determined stations included surface sediment grabs, vibrocores, towed underwater video, conductivity-temperature-depth profiles and ocean moorings. Multibeam sonar mapping revealed that Area 1 is characterised by palaeo-channels, plains, low-relief ridges and pockmark fields, whereas Area 2 is characterised by three steep- to vertically-sided flat-topped banks, which stand approximately 30-40 m above the surrounding seabed. Analysis of sediment samples indicate that the plains are comprised of fine- to medium-grained sands and muds, whereas palaeo-channels comprise coarse- to very coarse-grained sands. Habitats include soft barren sediments, bioturbated soft sediments and mixed patches of octocorals and sponges, distributed over shallow water depth ranges (82 - 96 m in Area 1; 45 - 52 m in Area 2). This information will be utilised to assess the biogeophysical setting (including habitat characterisation and the identification of unique, rare and/or potentially vulnerable habitats and communities) and seabed stability of the Petrel Sub-basin for potential CO2 storage.

This survey was undertaken as part of a research porgram within the Torres Strait CRC aimed at understanding marine biophysical processes in Torres Strait and their effect on seagrass habitats. This is the first of 2 Geoscience Australia surveys undertaken as part f the program. Data collected on the survey includes sediment samples, suspened solids samples, multibeam, and sub-bottomo profile data and oceangrahic current data.

The Radiometric Map of Australia dataset comprises grids of potassium, uranium, and thorium element concentrations, and derivatives of these grids, that were derived by seamlessly merging over 550 airborne gamma-ray spectrometric surveys in the national radioelement database

The Australian Government formally releases new offshore exploration areas at the annual APPEA conference. These areas are located across various offshore hydrocarbon provinces ranging from mature basins with ongoing oil and gas production to exploration frontiers. In support of the annual acreage release, Geoscience Australia (GA) provides a variety of technical information with an emphasis on basin evolution, stratigraphic frameworks and overviews of hydrocarbon prospectivity. In recent years, GA's petroleum geological studies have significantly high graded the prospectivity of large underexplored offshore regions such as the Ceduna Sub-basin and the Northern Perth Basin. A new program is now targeting areas that lie adjacent to producing regions with the aim to delineate the occurrence and distribution of petroleum systems elements in less explored or in unsuccessful areas and to provide a comprehensive overview of the regional geological evolution. Updates to the stratigraphic framework and new results from geochemical studies are already available and are used for prospectivity assessments. Furthermore, the Australian government continues to assist offshore exploration activities by providing free access to a wealth of geological and geophysical data.

The shallow water equations are widely used to model flood and tsunami flows, for example to develop inundation maps for hazard and risk assessments. Finite volume numerical methods are commonly used to derive approximate solutions to these problems, because of their potential to exactly conserve mass and momentum, and correctly simulate both smoothly and rapidly varying flows. However, there remain several common scenarios which often cause numerical difficulties. The occurrence of stationary water near complex wet-dry boundaries is a standard initial condition for tsunami applications. Many numerical methods will generate spurious waves in this situation, which can propagate into the flow domain and contaminate the solution. A related situation involves the simulation of run-off caused by direct rainfall inputs, which is often desirable for flood applications as an alternative to providing discharge inputs derived from rainfall-runoff models. Conserving mass and avoiding unrealistic 'spikes' in the simulated flow velocities can be challenging, particularly when the flow depth is much shallower than the elevation range of each mesh cell, as is practically unavoidable in large scale applications. Several techniques to robustly treat these situations have been implemented in variants of the ANUGA hydrodynamic model, and the performance of these is assessed in a range of ideal and practical examples.