Data

Processed multibeam backscatter data of the South East Tasmania Shelf

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) 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-e79b-5039-e044-00144f7bc0f4&rft.title=Processed multibeam backscatter data of the South East Tasmania Shelf&rft.identifier=Marlin Record Number: 8849&rft.publisher=Australian Ocean Data Network&rft.description=Geoscience Australia carried out marine surveys in southeast Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island. The challenger folder contains processed multibeam backscatter data of the South East Tasmania Shelf. The SIMRAD EM3002 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 marine surveys in southeast Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island. The "challenger" folder contains processed multibeam backscatter data of the South East Tasmania Shelf. The SIMRAD EM3002 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: 8849
  • global : bc1b3741-e79b-5039-e044-00144f7bc0f4
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