Data

Processed multibeam backscatter data of the Lord Howe Rise

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with) Geoscience Australia (Associated with) Geoscience Australia Marine Data Manager, (Point of contact)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/bc1b3741-e7a1-5039-e044-00144f7bc0f4&rft.title=Processed multibeam backscatter data of the Lord Howe Rise&rft.identifier=Marlin Record Number: 8850&rft.publisher=Australian Ocean Data Network&rft.description=Geoscience Australia carried out a marine survey on Lord Howe Island shelf (NSW) in 2008 (SS062008) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, rock coring, observation of benthic habitats using underwater towed video, and measurement of ocean tides and wavegenerated currents. Subbottom profile data was also collected to map sediment thickness and shelf stratigraphy. Data and samples were acquired using the National Facility Research Vessel Southern Surveyor. Bathymetric data from this survey was merged with other preexisting bathymetric data (including LADS) to generate a grid covering 1034 sq km. As part of a separate Geoscience Australia survey in 2007 (TAN0713), an oceanographic mooring was deployed on the northern edge of Lord Howe Island shelf. The mooring was recovered during the 2008 survey following a 6 month deployment. The 2461_ss062008 folder contains processed multibeam backscatter data of the Lord Howe Rise. The SIMRAD EM300 multibeam backscatter data were processed using the CMST-GA MB Process, a multibeam processing toolbox codeveloped by Geoscience Australia and Curtin University of Technology This dataset is a contribution to the CERF Marine Biodiversity Hub.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: The backscatter data were processed using CMST-GA MB Process v8.11.02.1 software. The fully processed backscatter strengths were corrected for transmission loss and insonification area. The process within the toolbox also involved removal of the system transmission loss, removal of the system model, calculation of the incidence angle and removal of the angular dependence. The angularly equalised backscatter strengths were normalised to the backscatter strength at an angle of 25 degrees&rft.creator=Anonymous&rft.date=2008&rft_rights=The processed data is not to be released. Contact custodian for more information.&rft_subject=oceans&rft_subject=Commonwealth Environment Research Facilities&rft.type=dataset&rft.language=English Access the data
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The processed data is not to be released. Contact custodian for more information.

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Geoscience Australia carried out a marine survey on Lord Howe Island shelf (NSW) in 2008 (SS062008) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, rock coring, observation of benthic habitats using underwater towed video, and measurement of ocean tides and wavegenerated currents. Subbottom profile data was also collected to map sediment thickness and shelf stratigraphy. Data and samples were acquired using the National Facility Research Vessel Southern Surveyor. Bathymetric data from this survey was merged with other preexisting bathymetric data (including LADS) to generate a grid covering 1034 sq km. As part of a separate Geoscience Australia survey in 2007 (TAN0713), an oceanographic mooring was deployed on the northern edge of Lord Howe Island shelf. The mooring was recovered during the 2008 survey following a 6 month deployment. The "2461_ss062008" folder contains processed multibeam backscatter data of the Lord Howe Rise. The SIMRAD EM300 multibeam backscatter data were processed using the CMST-GA MB Process, a multibeam processing toolbox codeveloped by Geoscience Australia and Curtin University of Technology This dataset is a contribution to the CERF Marine Biodiversity Hub.

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Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: The backscatter data were processed using CMST-GA MB Process v8.11.02.1 software. The fully processed backscatter strengths were corrected for transmission loss and insonification area. The process within the toolbox also involved removal of the system transmission loss, removal of the system model, calculation of the incidence angle and removal of the angular dependence. The angularly equalised backscatter strengths were normalised to the backscatter strength at an angle of 25 degrees

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Credit
The CMST-GA MB process is a multibeam processing toolbox codeveloped by Geoscience Australia and Centre for Marine Science and Technology at Curtin University of Technology

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Identifiers
  • Local : Marlin Record Number: 8850
  • global : bc1b3741-e7a1-5039-e044-00144f7bc0f4