Near-surface shear-wave velocity profiles were acquired at eighteen permanent and temporary seismograph sites in Western Australia, South Australia, Victoria and New South Wales. These data were obtained to support ground-motion modelling in Australia by characterising the near-surface response at sites used to record ground-motion from Australian earthquakes. Geoscience Australia contracted the US Geological Survey to obtain shear-velocity data using the Spectral Analysis of Shear-Waves (SASW) technique. Velocity profiles were calculated down to maximum depths between 100-200m. Apart from two sites on alluvium, all sites were located on hard rock at or near the surface. The average velocity to 30m depth (Vs30) ranges from 257 m/s for alluvial sites to 1652 m/s for Proterozoic metasediments.

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data are collected on geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.

This report outlines the level survey completed during the visit to Betio Island, the Republic of Kiribati in February / March 2009. This is the third EDM Height Traversing levelling survey of the deep bench mark array in the Republic of Kiribati. The 2009 survey is a repeat survey. On nine previous occasions, from 1992 to 2004 the Kiribati level survey was performed by the National Tidal Centre (NTC) using the Precise Differential Levelling technique. This project is sponsored by the Australian Agency for International Development (AusAID), managed by the Bureau of Meteorology (BOM) and supported by the National Geospatial Reference Systems Project (NGRS), Geospatial Earth Monitoring Division, GEOSCIENCE AUSTRALIA.

This is an annual map edition that shows australia's nickel resources - March 2009 edition.

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

Basin Biozonation and Stratigraphy Charts for the Bight Basin, Browse Basin, Bonaparte Basin, Canning Basin and Otway Basin

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 p200861_Windimurra_with_infill_complete_spherical_cap_Bouguer267.nc grid is a complete spherical cap Bouguer anomaly grid for the Windimurra Gravity survey. This gravity survey was acquired under the project No. 200861 for the geological survey of WA. The grid has a cell size of 0.0046 degrees (approximately 480m). A total of 6042 gravity stations were acquired to produce this grid.

The Moonta Subdomain forms the southern part of the Olympic Cu-Au province on the eastern margin of the Gawler Craton, and underlies most of the Yorke Peninsula and Spencer Gulf. The domain basement comprises metasediments and metavolcanics of the Palaeoproterozoic Wallaroo Group (~1760-1740 Ma) which were deformed and metamorphosed to upper greenschist-amphibolite facies during the Kimban Orogeny (~1720 Ma). These rocks were further deformed and intruded by granitoids and minor mafic intrusions of the Hiltaba Suite between about 1600 Ma and 1575 Ma. The Moonta Subdomain basement is highly prospective for iron oxide-Cu-Au mineralisation associated with the Hiltaba magmatic event. However outcrop of these basement rocks is limited almost entirely to narrow coastal exposures. The majority of the prospective basement is concealed by up to 100 metres of Neoproterozoic to Quaternary sediments, and geological mapping of the basement is largely limited to interpretation of geophysics (airborne magnetics, gravity, AEM) and drilling. This map has been produced as a GeoPDF, which is an extension to the standard PDF file format viewed using Adobe Acrobat Reader. Layers can be turned off and on to customise the view of the data, similar to using Geographic Information System tools. In addition, GeoPDF maps are georeferenced to be compatible with other coordinated geographic data. Coordinate locations and distances can be retrieved automatically. A plug-in to view GeoPDF using Adobe Acrobat Reader is available as a free download ( http://terragotech.com/solutions/map2pdf_reader.php ).

Project Y4 Deliverable #7 Reports on the character of key faults, especially the deep tapping 'cracks'. Aquire new data (MT and tomography)

Deep-water demersal fishes are an important component of continental shelf and slope ecosystems and play an important role in the economies of many countries. Strong and predictable relationships of fishes with seabed habitats, in conjunction with rapid advances in acoustic seabed mapping capabilities, indicate there is great potential for using habitats as proxies or ‘surrogates’ to predict species distribution and abundance patterns at broad regional scales. However, few studies have evaluated this potential in complex seabed environments. In this study, we examined the spatial distributions, assemblage composition, and benthic habitat associations of deep-water demersal fish species over three spatial scales across Cordell Bank, a deep-water bank in central California. Demersal fishes were counted and habitats quantified from 60 strip-transects allocated over the extent of the bank using in situ observer and video-recorded data from the two-person Delta submersible. Both abundance and distribution of demersal fish species on Cordell Bank were strongly correlated with spatial location and habitat composition on the bank. Habitat structure was heterogeneous at several spatial scales. At broad scales, the rocky bank itself contained the highest diversity of both habitats and fishes. At intermediate scales, transition zones (10-100s of m wide) between the bank and continental slope and shelf sediments supported a diverse and characteristic suite of fish species. Habitats were also heterogeneous at finer-scales (1-10s of m) within these broad-scale zones, and fish responses to these habitat characteristics were taxon-specific, and often contingent on the spatial configuration of fine scale habitats within the broader-scale landscape. The results of this study indicate that for many species it is not sufficient to just know the fine-scale habitat association to predict fish assemblages.