ACRES Update Monitoring pastures from space Remote sensing research at Coleambally Irrigation Area Satellite imagery helps to classify Australia's estuaries

Structure and Metamorphic Evolution of Key Areas in the Eastern Fold Belt, Mount Isa Inlier Poster, Mohammad Sayab

Legacy product - no abstract available

This data set consists of processed seismic reflection data for line 01AGS-NY1 from the 2001 Northern Yilgarn seismic survey (L154), Western Australia. Line 01AGS-NY1 commenced in the Yilgarn Craton (Leonora) and extended to the east into the Officer Basin (east of Lake Yeo). The data were acquired by the Australian National Seismic Imaging Resource (ANSIR) using vibratory sources at a nominal 60 fold coverage. The seismic data are provided as SEG-Y files of stack and migrated data to 4 seconds and 18 seconds two-way time, at a sample interval of 4 milliseconds. CDP range is 1985 to 20860 with 20 metre CDP interval. SEG-Y header information, CDP coordinates as eastings and northings, and a pdf image of the migrated 18 second seismic section are also included. The line, migrated section images and further information on this data can be obtained from the <a href="http://www.pmdcrc.com.au" target="_blank">pmd*CRC</a> website.

The Otway-Sorell study is part of Infoterra's Global Seeps programme - a multi-phase two year exploration programme to create the definitive offshore seeps database for the worldwide exploration industry. The Otway-Sorell Basin study includes interpretations by Infoterra and Geoscience Australia that correlate multiple seep clusters with regional seismic and gravity datasets. The study provides exciting new evidence on the oil prospectivity of this offshore region.

No abstract available

No abstract available

This record is a report of the operations carried out during Geoscience Australia Survey 229 off the Australian Antarctic Territory from January-April 2002. The survey acquired deep-seismic and potential field data along 8600 km of profiles as a part of the Australian Antarctic and Southern Ocean Profiling Project.

Geoscience Australia`s involvement in Papua New Guinea mapping includes managing the production of maps for select urban areas as part of a MOU between Department of Defence and PNG. In addition, Geoscience Australia distributes some (now aging) 1:100,000 scale maps produced by the Department of Defence for much of Papua New Guinea.

EXECUTIVE SUMMARY The estuarine process study of Wallis Lake (Webb, McKeown and Associates) identified: nutrient and animal faecal pollution; and human faecal pollution and other urban runoff pollutants from the Forster-Tuncurry area as the principal source of pollutants in the estuary. The major findings of this study are listed below. Rural and Urban Inputs The sediments at each site contained a unique miospore signature (pollen and spore) characteristic of catchment sources (although no specifically urban signature was found). The majors rivers (Sites 1 and 5) are characterised by specific biomarkers derived from terrestrial plants and by very high concentrations of dry sclerophyll (Eucalyptus Gummifera type) pollen and sclerophyll swamp (Allocasuarina/Casuarina) pollen respectively. The major river sites have strong signals related to herbivore faecal contamination, most probably from cattle. There was little input of pollen or biomarkers from the rural catchments to the shallow lagoon that constitutes the southern portion of Wallis Lake. No specifically urban signature was detected. Urban sources, such as human sewage and petroleum products were not found at Site 2 (urban catchment end-member) or any of the other sites. No specifically urban pollen was found at Site 2, although this site did have the highest concentration of exotic pollen Organic Matter in the Sediments The organic matter present at each site consists of a mixture of terrestrial and algal material; however, it is the algal material that decomposes most rapidly. Dinoflagellate indicators (microfossils and biomarkers) were present in low concentrations The occurrence of distinctive suites of miospores and biomarkers for rural catchments and the association of high concentrations of faecal (herbivore) biomarkers with rural inputs indicates that the input of organic material from these catchments can be mapped throughout the lake.