Data

Submarine geomorphology and sea floor processes along the coast of Vestfold Hills, East Antarctica from multibeam bathymetry and video data

Australian Ocean Data Network

O'Brien, P.E. ; Smith, J. ; Stark, J.S. ; Johnstone, G. ; Riddle, M.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/82274&rft.title=Submarine geomorphology and sea floor processes along the coast of Vestfold Hills, East Antarctica from multibeam bathymetry and video data&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/82274&rft.description=Surveying of nearshore areas in the Vestfold Hills using high resolution multibeam swath bathymetry provides both a detailed digital bathymetric model and information on sediment acoustic backscatter. Combined with underwater video transects and sediment sampling, these data can be used to identify and map geomorphic units. Six geomorphic units identified in the survey region include: Rocky outcrops, sediment-floored basins, pediments, steep-sided valleys, scarps and sheltered embayments. In addition to geomorphic units, the data reveal sedimentary structures that provide insights into sediment transport and erosion in the area. Ice keel pits and scours are common while seafloor channels, scour depressions and sand ribbons indicate transport and deposition by wind-driven currents and oceanographic circulation. Gullies and sediment lobes on steep slopes indicate mass movement of sediment. The sheltered embayments preserve a mantle of boulder sand probably deposited by cold-based glaciers. Automated techniques utilizing the bathymetric grid and backscatter to map landforms are useful in defining reproducible boundaries between geomorphic units but cannot easily be adapted to accurately classify the variations in sea floor texture and structure imaged by these data.Maintenance and Update Frequency: notPlannedStatement: Unknown&rft.creator=O'Brien, P.E. &rft.creator=Smith, J. &rft.creator=Stark, J.S. &rft.creator=Johnstone, G. &rft.creator=Riddle, M.J. &rft.date=2014&rft.coverage=westlimit=77.66666; southlimit=-68.75; eastlimit=78.16666; northlimit=-68.416666&rft.coverage=westlimit=77.66666; southlimit=-68.75; eastlimit=78.16666; northlimit=-68.416666&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=External Publication&rft_subject=Scientific Journal Paper&rft_subject=marine&rft_subject=geomorphology&rft_subject=antarctica&rft_subject=bathymetry&rft_subject=AQ&rft_subject=Marine Geoscience&rft_subject=EARTH SCIENCES&rft_subject=GEOLOGY&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

Access data online via tools
Link to the Publication (Link to pu... Access data via landing page
https://ecat.ga.gov.au...

Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

Open Licence view details

CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

https://www.protectivesecurity.gov.au/Pages/default.aspx

WWW:LINK-1.0-http--link

Access:

Open

Contact Information

clientservices@ga.gov.au

Brief description

Surveying of nearshore areas in the Vestfold Hills using high resolution multibeam swath bathymetry provides both a detailed digital bathymetric model and information on sediment acoustic backscatter. Combined with underwater video transects and sediment sampling, these data can be used to identify and map geomorphic units. Six geomorphic units identified in the survey region include: Rocky outcrops, sediment-floored basins, pediments, steep-sided valleys, scarps and sheltered embayments. In addition to geomorphic units, the data reveal sedimentary structures that provide insights into sediment transport and erosion in the area. Ice keel pits and scours are common while seafloor channels, scour depressions and sand ribbons indicate transport and deposition by wind-driven currents and oceanographic circulation. Gullies and sediment lobes on steep slopes indicate mass movement of sediment. The sheltered embayments preserve a mantle of boulder sand probably deposited by cold-based glaciers. Automated techniques utilizing the bathymetric grid and backscatter to map landforms are useful in defining reproducible boundaries between geomorphic units but cannot easily be adapted to accurately classify the variations in sea floor texture and structure imaged by these data.

Lineage

Maintenance and Update Frequency: notPlanned

Statement: Unknown

Issued: 22 09 2014

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=77.66666; southlimit=-68.75; eastlimit=78.16666; northlimit=-68.416666

Subjects

AQ | Earth Sciences | External Publication | Geology | Marine Geoscience | Published_External | Scientific Journal Paper | antarctica | bathymetry | geomorphology | geoscientificInformation | marine |

User Contributed Tags

Login to tag this record with meaningful keywords to make it easier to discover

Identifiers

URI : pid.geoscience.gov.au/dataset/ga/82274
global : 03a1f567-df0c-0d8c-e054-00144fdd4fa6

Similar data you may be interested in: