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Backscatter grid of the north block of the Mandu survey area (Carnarvon Shelf)Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2. Dataset citationANZLIC unique identifier: ANZCW0703015331 Title: Backscatter grid of the north block of the Mandu survey area (Carnarvon Shelf) CustodianCustodian: Geoscience Australia Jurisdiction: Australia DescriptionAbstract: 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.. gnaraloo_3m is an ArcGIS layer of the backscatter grid of the Gnaraloo survey area produced from the processed EM3002 backscatter data of the survey area using the CMST-GA MB Process ANZLIC search words:
Spatial domain:
Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia Geographic extent polygon: 113.1 -21.5, 114.4 -21.5, 114.4 -23.9, 113.1 -23.9, 113.1 -21.5, Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register
Data currencyBeginning date: 2010-10-20 Ending date: 2010-10-20 Dataset statusProgress: Complete Maintenance and update frequency: Not Known Access
Access constraints: This material is released under the Creative Commons Attribution 3.0 Australia Licence. Free Data DownloadData qualityLineage: The grid values are basically the average values of the processed backscatter point data within each grid cell of predefined size Positional accuracy: Inherited from raw data in which C-NAV system was used to provide geographical postion with a manufacturer accuracy of 10 cm RMS. Inherited from raw data in which Applanix system was used to provide roll and pitch, and heave with manufacturer accuracies for roll and pitch are 0.05 deg. RMS, and manufacturer accuracy for heave is 5 cm. Attribute accuracy: The accuracy is high but it is cell size dependent. Note that the water depth dictates the cell size Logical Consistency: All procedures, steps and software involved in producing a backscatter grid are similar Completeness: Completed Contact information
Metadata informationMetadata date: 2013-03-08 Additional metadataMetadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703015331.html Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703015331.xml . Authors:Geoscience Australia |
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SPATIAL INFORMATION FOR THE NATION
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