This web service delivers metadata for onshore active and passive seismic surveys conducted across the Australian continent by Geoscience Australia and its collaborative partners. For active seismic this metadata includes survey header data, line location and positional information, and the energy source type and parameters used to acquire the seismic line data. For passive seismic this metadata includes information about station name and location, start and end dates, operators and instruments. The metadata are maintained in Geoscience Australia's onshore active seismic and passive seismic database, which is being added to as new surveys are undertaken. Links to datasets, reports and other publications for the seismic surveys are provided in the metadata.

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The Dynamic Land Cover Dataset of Australia is the first nationally consistent and thematically comprehensive land cover reference for Australia. It is the result of a collaboration between Geoscience Australia and the Australian Bureau of Agriculture and Resource Economics and Sciences, and provides a base-line for identifying and reporting on change and trends in vegetation cover and extent. The technical report describes the background and method behind the land cover product and provides some examples of how the product may be used.

The evolution of the Australian Landslide Database (ALD) was driven by the need for a nationally consistent system of data collection in order to develop a sound knowledge base on landslide hazard and inform landslide mitigation strategies. The use of 'networked service-oriented interoperability' to connect disparate landslide inventories into a single 'virtual' national database, promotes a culture of working together and sharing data to ensure landslide information is easily accessible and discoverable to those who need it.

Introduction National baseline geochemical surveys have been conducted in most developed countries, but not yet in Australia. In a country as large and diverse as Australia, an initial step in the development of a national low-density geochemical atlas needs to be the pilot testing of geochemical survey methodologies in representative regions displaying contrasting topographic, drainage and climatic conditions. To date, we have conducted or are conducting-pilot geochemical surveys in four regions of south-eastern Australia: the Riverina, Curnamona, Gawler and Thomson regions (Figure 1). The main focus of the surveys is to sample fine-grained transported regolith (sediments). In all but the Curnamona cases, the sampling strategy adopted consisted of collecting sediment samples at two depths from floodplains near the outlet of (mostly large) large catchments. In the Curnamona, only surface fine-grained soil was collected mostly from depositional plains (Caritat & Reimann 2003). Other sampling media are also being tried in these surveys, including groundwater, plant tissues, and lag. Various sampling densities are being tested (Table 1), and modelling is planned to test what minimum sampling density would be required for a national coverage. The most recent survey, which is still in a preliminary stage, is in the Thomson region, for which only reconnaissance sampling has taken place so far. The most advanced pilot project is the one from the Riverina region, the subject of the remainder of this article. Table 1. Overview of sizes and sampling densities of pilot geochemical surveys. Pilot survey Distance east-west (km) Distance north-south (km) Approximate area (km2) Number of sampling sites Average sampling density (1 sample per X km2) Riverina 288 427 122,976 142 866 Curnamona 305 203 61,915 199 311 Gawler 212 253 53,636 48 1117 Thomson 664 316 209,824 19 (preliminary) ~200 (target) 11,043 (preliminary) 1049 (target)

The 1:250 000 maps show the type and distribution of 51 regolith-landform units with unique dominant regolith-landform associations, and are a subset of the 205 mapping units on the six 1:100 000 maps. These units are distinct patterns of recurring landform elements with characteristic regolith associations. Geomorphic symbols indicate the location and type of geomorphic activity. The maps present a systematic analysis and interpretation of 1:89 000 scale 1973 RC9 aerial photography, 1:100 000 scale topographic maps (AUSLIG), and field mapping data. High resolution (250m line spacing) airborne gamma-ray spectrometry and magnetics (Geoterrex) were used where applicable

Legacy product - no abstract available

The 1:250 000 maps show the type and distribution of 51 regolith-landform units with unique dominant regolith-landform associations, and are a subset of the 205 mapping units on the six 1:100 000 maps. These units are distinct patterns of recurring landform elements with characteristic regolith associations. Geomorphic symbols indicate the location and type of geomorphic activity. The maps present a systematic analysis and interpretation of 1:89 000 scale 1973 RC9 aerial photography, 1:100 000 scale topographic maps (AUSLIG), and field mapping data. High resolution (250m line spacing) airborne gamma-ray spectrometry and magnetics (Geoterrex) were used where applicable

Provides regional framework study of regolith and associated landforms over the Tanami region. Datasets are all contained in a GIS - these include regolith-landform units, enhanced Landsat TM imagery, site descriptions and photo links, regolith profiles descriptions (geochemistry and PIMA), drill hole geochemistry, gamma-ray spectrometry imagery, palaeochannels, geochemical sampling strategy maps, surface flow vector maps, enhanced DEMs, erosional scarps and maps showing depth of transported cover.

A geotechnical landscape map of Australia has been drawn depicting regions of constant [geological and physical] (NOT geophysical {Ed}) properties for road construction. The map, drawn at a scale of 1:2 500 000 for clarity, has a true accuracy of a 1:5 000 000 scale map, and is based on the four variables - landform, underlying lithology, soil type and [surficial] lithology - which are the principal [geological and physical] determinants for road construction. The origins and interpretation of the source maps together with a description of the legend of the geotechnical landscape map are described in this Report. Precis {Ed}: A map delineating regions with differing geotechical properties with particular application to road construction.