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Raw multibeam backscatter data of the Carnarvon ShelfNote: 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: ANZCW0703016229 Title: Raw multibeam backscatter data of the 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 wave generated 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. The "0308_carnarvon_shelf" folder contains raw multibeam backscatter data of the Carnarvorn Shelf. The raw multibeam backscatter data were collected along survey lines using GAs Kongsberg SIMRAD EM3002 in single head configuration from aboard RV Solander ANZLIC search words:
Spatial domain:
Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia Geographic extent polygon: 113.18 -21.56, 114.36 -21.56, 114.36 -23.9, 113.18 -23.9, 113.18 -21.56, Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register
Data currencyBeginning date: 2008-08-12 Ending date: 2008-09-15 Dataset statusProgress: Complete Maintenance and update frequency: Not Known Access
Access constraints: The raw data is not to be released. Contact custodian for more information. Order ProductData qualityLineage: Kongsberg SIMRAD EM3002 multibeam sonar operating at 300kHz with 1.5x1.5 deg beamwidth was used to acquire the backscatter and bathymetry data Positional accuracy: C_NAV system was used to provide geographical postion with a manufacturer accuracy of 10 cm RMS. 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 quite high because of the narrow beam that the sonar system uses and the high positional accuracy that the auxiliary sensors provide. The patch test conducted at the beginning of the survey and routine SVP casts during the survey contribute to high accuracy that the system used can provide Logical Consistency: The same setting, data acqusition procedure, and patch test and calibration procedure and methodology were consistanly applied to whole survey Completeness: Completed Contact information
Metadata informationMetadata date: 2013-03-08 Additional metadataMetadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703016229.html Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703016229.xml . Authors:Siwabessy, J. |
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