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  • 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

  • This dataset is clipped from the Population Centres dataset (Geomet 2389) Population centres such as major centres (associated with political DCW dataset (polys) for built up areas), populated places and villages (dataset derived from the Digital Chart of the World (DCW)). For more information on the Digital Chart of the World data please browse the DCW Internet Site <a href="http://www.maproom.psu.edu/dcw/">http://www.maproom.psu.edu/dcw/</a>. Data can be downloaded from here in <b>vpf format</b>. <p>NOTE : For more accurate and detailed data covering <b>continental Australia only</b> please obtain the <b><a href="http://www.auslig.gov.au/download/">Global Map Data 1M</a></b> <p><b>Generic information on DCW datasets :-</b> <br>The primary source for DCW is the US Defense Mapping Agency (DMA) Operational Navigation Chart (ONC) series produced by the United States, Australia, Canada, and the United Kingdom. The ONC's have a scale of 1:1,000,000, where 1 inch equals approximately 16 miles.The charts were designed to meet the needs of pilots and air crews in medium and low altitude en route navigation and to support military operational planning, intelligence briefings, and other needs. Therefore, the selection of ground features is based on the requirement for rapid visual recognition of significant details seen from a low perspective angle. The DCW database was originally published in 1992. Data currency varies from place to place depending on the currency of the ONC charts. Chart currency ranges from the mid 1960's to the early 1990's. Compilation dates for every ONC chart are included in the database.

  • This dataset represents digital isochrons of the worlds ocean floor.

  • This dataset contains the Currenmt Meter data collected on Geoscience Australia Survey 266. The survey took place in central Torres Strait during March and April 2004 on the RV James Kirby. This dataset has been processed and archived within Geoscience Australia's Seabed Mapping and Characteristion Project in Canberra. Additional information regarding this dataset is contained in the Survey report. Biophysical Processes in theTorres Strait Marine Ecosystem - post cruise report. Geoscience Australia Record 2005/11.

  • This depth to basement point data set consists of a compilation depth values (meters below the topography) of basement geology buried beneath younger flat-lying cover material. The depth values are sourced from drill hole data, magnetic depth estimates and seismic refraction data. Drill hole data was compiled from a number of sources and consists of holes that entered basement only. The data consists of: - Mineral, Stratigraphic and Coal drill holes sourced from the Queensland Department of Mines and Energy's Interactive Resource and Tenure Maps system (http://www.dme.qld.gov.au/mines/tenure_maps.cfm) - Drill holes included with a GIS of the North Queensland Gold and Base Metals Study (Georgetown) sourced from the Queensland Department of Mines and Energy web site (http://www.dme.qld.gov.au/mines/seqgis.cfm#Georgetown) - Drill holes from the North-West Queensland Mineral Province Report. Seismic data depth estimates were generated from refracted first break seismic data for the North Queensland seismic lines 06GA-M4, 06GA-M5 and 07GA-IG1. Magnetic depth estimates were sourced from the following: - Magnetic depth determinations from the North-West Queensland Mineral Province Report. - Estimated depths to magnetic basement Springvale and Boulia 1:250 000 sheet areas. - Depth to magnetic source estimates from airborne magnetic profile data using the Naudy method. - Depth estimates from forward modelled profiles extracted from a magnetic grid using a dipping dyke as the source body.

  • The 1:250 000 scale geological map series now covers almost all of Australia and has been produced over many years by AGSO and its counterpart state bodies. The quality of maps has improved steadily over the years. Modern maps are produced with the aid of satellite images and aircraft-obtained magnetic and gamma-ray images.

  • This data is a collection of data used to create the NATMAP 1:30,000k general reference map of Christmas Island. This metadata relates to the following shapefile layers: roads_30k.shp, feature_names_30k.shp, springs_30k.shp, building_areas_30k, caves_30k, cliffs_30k, coast_boundary_30k, contours_10m_30k, marine_infrastructure_30k, masts_30k, native_vegetation, opencut_mine_30k, recreation_areas_30k, spot_elevations_30k, storage_tanks_30k, streams_30k and waterfall_points_30k.

  • 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 spatial data presents the current climate bushfire hazard for the 50 year Average Recurrence Interval (ARI - equivalent to Return Period (RP)). The grid values are Forest Fire Danger Index values which can be categoriesed into the FFDI categories.

  • Geoscience Australia's GEOMACS model was utilised to produce hindcast hourly time series of continental shelf (~20 - 300 m depth) bed shear stress (unit of measure: Pascal, Pa) on a 0.1 degree grid covering the period March 1997 to February 2008 (inclusive). The hindcast data represents the combined contribution to the bed shear stress by waves, tides, wind and densitydriven circulation. Ecological data collected from Torres Strait suggests that bed shear stresses exceeding 0.4 Pa are important in determining the species present (Long, Bode, & Pitcher 1997). Although this data may not be representative of other regions or benthic communities, it has been utilised to calculate two parameters for determining the relationship between shear bed stress and the benthic community. One of the parameters is the total percentage of time the bed shear stress exceeds 0.4 Pa, and this is denoted (Hughes & Harris 2008).

  • This depth to basement point data set consists of a compilation depth values (meters below the topography) of basement geology buried beneath younger flat-lying cover material. The depth values are sourced from drill hole data, magnetic depth estimates and seismic refraction data. Drill hole data was compiled from a number of sources and consists of holes that entered basement only. The data consists of: - Mineral, Stratigraphic and Coal drill holes sourced from the Queensland Department of Mines and Energy's Interactive Resource and Tenure Maps system (http://www.dme.qld.gov.au/mines/tenure_maps.cfm) - Drill holes included with a GIS of the North Queensland Gold and Base Metals Study (Georgetown) sourced from the Queensland Department of Mines and Energy web site (http://www.dme.qld.gov.au/mines/seqgis.cfm#Georgetown) - Drill holes from the North-West Queensland Mineral Province Report. Seismic data depth estimates were generated from refracted first break seismic data for the North Queensland seismic lines 06GA-M4, 06GA-M5 and 07GA-IG1. Magnetic depth estimates were sourced from the following: - Magnetic depth determinations from the North-West Queensland Mineral Province Report. - Estimated depths to magnetic basement Springvale and Boulia 1:250 000 sheet areas. - Depth to magnetic source estimates from airborne magnetic profile data using the Naudy method. - Depth estimates from forward modelled profiles extracted from a magnetic grid using a dipping dyke as the source body.