Data

Methodologies for multibeam seabed hardness mapping in the Timor Sea - Backscatter Homogeneity

Geoscience Australia
Huang, Z. ; Siwabessy, J.
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/76725&rft.title=Methodologies for multibeam seabed hardness mapping in the Timor Sea - Backscatter Homogeneity&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/76725&rft.publisher=Geoscience Australia&rft.description=This dataset contains backscatter homogeneity data from seabed mapping surveys on the Van Diemen Rise in the eastern Joseph Bonaparte Gulf of the Timor Sea. The survey was conducted under a Memorandum of Understanding between Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS) in two consecutive years 2009 (GA survey number GA-0322 and AIMS survey number SOL4934) and 2010 (GA survey number GA-0325 and AIMS survey number SOL5117). The surveys obtained detailed geological (sedimentological, geochemical, geophysical) and biological data (macro-benthic and infaunal diversity, community structure) for the banks, channels and plains to investigate relationships between the physical environment and associated biota for biodiversity prediction. The surveys also provide Arafura-Timor Sea, and wider northern Australian marine region context for the benthic biodiversity of the Van Diemen Rise. Four study areas were investigated across the outer to inner shelf. Refer to the GA record 'Methodologies for seabed substrate characterisation using multibeam bathymetry, backscatter, and video data: A case study for the Eastern Joseph Bonaparte Gulf, Northern Australia' for further information on processing techniques applied (GeoCat: 74092; GA Record: 2013/11).Maintenance and Update Frequency: asNeededStatement: ENVI software was used to calculate the homogeneity. It was applied to the backscatter grid using a 7 by 7 rectangle window.&rft.creator=Huang, Z. &rft.creator=Siwabessy, J. &rft.date=2013&rft.coverage=westlimit=129.451; southlimit=-12.287; eastlimit=130.063; northlimit=-10.285&rft.coverage=westlimit=129.451; southlimit=-12.287; eastlimit=130.063; northlimit=-10.285&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=geoscientificInformation&rft_subject=Marine Data&rft_subject=Backscatter Grid&rft_subject=backscatter&rft_subject=geoscience&rft_subject=multibeam&rft_subject=marine&rft_subject=NERP&rft_subject=AU-NT&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
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

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4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

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WWW:LINK-1.0-http--link

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Brief description

This dataset contains backscatter homogeneity data from seabed mapping surveys on the Van Diemen Rise in the eastern Joseph Bonaparte Gulf of the Timor Sea. The survey was conducted under a Memorandum of Understanding between Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS) in two consecutive years 2009 (GA survey number GA-0322 and AIMS survey number SOL4934) and 2010 (GA survey number GA-0325 and AIMS survey number SOL5117). The surveys obtained detailed geological (sedimentological, geochemical, geophysical) and biological data (macro-benthic and infaunal diversity, community structure) for the banks, channels and plains to investigate relationships between the physical environment and associated biota for biodiversity prediction. The surveys also provide Arafura-Timor Sea, and wider northern Australian marine region context for the benthic biodiversity of the Van Diemen Rise. Four study areas were investigated across the outer to inner shelf. Refer to the GA record 'Methodologies for seabed substrate characterisation using multibeam bathymetry, backscatter, and video data: A case study for the Eastern Joseph Bonaparte Gulf, Northern Australia' for further information on processing techniques applied (GeoCat: 74092; GA Record: 2013/11).

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Maintenance and Update Frequency: asNeeded
Statement: ENVI software was used to calculate the homogeneity. It was applied to the backscatter grid using a 7 by 7 rectangle window.

Issued: 2013

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130.063,-10.285 130.063,-12.287 129.451,-12.287 129.451,-10.285 130.063,-10.285

129.757,-11.286

text: westlimit=129.451; southlimit=-12.287; eastlimit=130.063; northlimit=-10.285

Subjects
AU-NT | Backscatter Grid | Earth Sciences | Geology | Marine Data | Marine Geoscience | NERP | Published_External | backscatter | geoscience | geoscientificInformation | marine | multibeam |

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