Data

Leveque Shelf Browse Basin Marine Survey (GA-0340/SOL5754) (NCIP Program) - High Resolution Multibeam Acoustic Backscatter Grids

Name: Leveque Shelf Browse Basin Marine Survey (GA-0340/SOL5754) (NCIP Program) - High Resolution Multibeam Acoustic Backscatter Grids
Published: 2014

Geoscience Australia

Siwabessy, J. ; Picard, K.

Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]

ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/79033&rft.title=Leveque Shelf Browse Basin Marine Survey (GA-0340/SOL5754) (NCIP Program) - High Resolution Multibeam Acoustic Backscatter Grids&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/79033&rft.publisher=Geoscience Australia&rft.description=This resource contains backscatter data for the the Leveque Shelf, a sub-basin of the Browse Basin, in May 2013 on RV Solander (survey GA0340/SOL5754). The survey used a Kongsberg EM3002 300 kHz multibeam sonar system mounted in single head configuration to map six areas, covering a combined area of 1070 square kilometres. Data are gridded to 2 m spatial resolution. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir)Maintenance and Update Frequency: asNeededStatement: The backscatter data were processed using CMST-GA MB Process v12.05.07.0 (x64) toolbox 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 grid values are basically the average values of the processed backscatter point data within each grid cell of predefined size, normalised to the backscatter strength at an angle of 25 degrees&rft.creator=Siwabessy, J. &rft.creator=Picard, K. &rft.date=2014&rft.coverage=westlimit=121.1; southlimit=-16.1; eastlimit=121.75; northlimit=-15.45&rft.coverage=westlimit=121.1; southlimit=-16.1; eastlimit=121.75; northlimit=-15.45&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=Marine Data&rft_subject=Backscatter Grid&rft_subject=backscatter&rft_subject=multibeam&rft_subject=marine environmental baselines&rft_subject=marine survey&rft_subject=seabed&rft_subject=marine&rft_subject=AU-WA&rft_subject=Marine Geoscience&rft_subject=EARTH SCIENCES&rft_subject=GEOLOGY&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

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Creative Commons Attribution 4.0 International Licence
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Creative Commons Attribution 4.0 International Licence

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4.0

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WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

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Contact Information

clientservices@ga.gov.au

Brief description

This resource contains backscatter data for the the Leveque Shelf, a sub-basin of the Browse Basin, in May 2013 on RV Solander (survey GA0340/SOL5754). The survey used a Kongsberg EM3002 300 kHz multibeam sonar system mounted in single head configuration to map six areas, covering a combined area of 1070 square kilometres. Data are gridded to 2 m spatial resolution. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir)

Lineage

Maintenance and Update Frequency: asNeeded

Statement: The backscatter data were processed using CMST-GA MB Process v12.05.07.0 (x64) toolbox 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 grid values are basically the average values of the processed backscatter point data within each grid cell of predefined size, normalised to the backscatter strength at an angle of 25 degrees

Issued: 2014

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=121.1; southlimit=-16.1; eastlimit=121.75; northlimit=-15.45

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Other Information

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

uri : https://pid.geoscience.gov.au/dataset/ga/83727 External Link

Identifiers

global : f22bc521-54b4-5dbf-e044-00144fdd4fa6
URI : http://pid.geoscience.gov.au/dataset/ga/79033
DOI : 10.4225/25/54EA691B457D6

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