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Raw multibeam backscatter data of the 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 citation

ANZLIC unique identifier: ANZCW0703016229

Title: Raw multibeam backscatter data of the Carnarvon Shelf


Custodian: Geoscience Australia

Jurisdiction: Australia



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:

  • MARINE Mapping
  • MARINE Geology and Geophysics

Spatial domain:

locality map

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

Geographic bounding box:
North bounding latitude: -21.56 °
South bounding latitude: -23.9 °
East bounding longitude: 114.36 °
West bounding longitude: 113.18 °

Data currency

Beginning date: 2008-08-12

Ending date: 2008-09-15

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Stored data format:
DIGITAL - xls Microsoft Excel spreadsheet Excel GDA94
Available format type:
DIGITAL - xls Microsoft Excel spreadsheet Excel GDA94

Access constraints:

The raw data is not to be released. Contact custodian for more information.

Order Product

Data quality


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



Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address:

Metadata information

Metadata date: 2013-03-08

Additional metadata

Metadata reference XHTML:

Metadata reference XML:


Authors:Siwabessy, J.