Data

A bathymetric Digital Elevation Model (DEM) of the George V and Terre Adelie continental shelf and margin

Australian Antarctic Data Centre
BEAMAN, ROBIN JORDAN
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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://data.aad.gov.au/metadata/records/GVdem_2008&rft.title=A bathymetric Digital Elevation Model (DEM) of the George V and Terre Adelie continental shelf and margin&rft.identifier=https://data.aad.gov.au/metadata/records/GVdem_2008&rft.publisher=Australian Antarctic Data Centre&rft.description=This dataset comprises Digital Elevation Models (DEMs) of varying resolutions for the George V and Terre Adelie continental margin, derived by incorporating all available singlebeam and multibeam point depth data into ESRI ArcGIS grids. The purpose was to provide revised DEMs for Census of Antarctic Marine Life (CAML) researchers who required accurate, high-resolution depth models for correlating seabed biota data against the physical environment. The DEM processing method utilised all individual multibeam and singlebeam depth points converted to geographic xyz (long/lat/depth) ASCII files. In addition, an ArcGIS line shapefile of the East Antarctic coastline showing the grounding lines of coastal glaciers and floating ice shelves, was converted to a xyz ASCII file with 0 m as the depth value. Land elevation data utilised the Radarsat Antarctic Mapping Project (RAMP) 200 m DEM data converted to xyz ASCII data. All depth, land and coastline ASCII files were input to Fledermaus 3DEditor visualisation software for removal of noisy data. The cleaned point data were then binned into a gridded surface using Fledermaus DMagic software, resulting in a 0.001-arcdegree (~100 m) resolution DEM with holes where no input data exists. ArcGIS Topogrid software was used to interpolate across the holes to output a full-coverage DEM. ArcGIS was used to produce the additional 0.0025-arcdegree (~250 m) and 0.005-arcdegree (~500 m) resolution grids. Full processing details can be viewed in: Beaman, R.J., O'Brien, P.E., Post, A.L., De Santis, L., 2011. A new high-resolution bathymetry model for the Terre Adelie and George V continental margin, East Antarctica. Antarctic Science 23(1), 95-103. doi:10.1017/S095410201000074X&rft.creator=BEAMAN, ROBIN JORDAN &rft.date=2009&rft.coverage=northlimit=-63; southlimit=-69; westlimit=138; eastLimit=148; projection=WGS84&rft.coverage=northlimit=-63; southlimit=-69; westlimit=138; eastLimit=148; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=GVdem_2008 when using these data. Users of the gvdem grid must include the following references in any subsequent publications using this dataset: De Santis, L., Brancolini, G., Accettella, D., Cova, A., Caburlotto, A., Donda, F., Pelos, C., Zgur, F., Presti, M., 2007. New insights into submarine geomorphology and depositional processes along the George V Land continental slope and upper rise (East Antarctica). In: A.K. Cooper and C.R. Raymond (Editors), 10th International Symposium on Antarctic Earth Sciences, August 26-31 2007. Scientific Committee on Antarctic Research, Santa Barbara, U.S.A., pp. 1-5. Beaman, R.J., O'Brien, P.E., Post, A.L., De Santis, L., 2011. A new high-resolution bathymetry model for the Terre Adelie and George V continental margin, East Antarctica. Antarctic Science 23(1), 95-103. doi:10.1017/S095410201000074X&rft_subject=elevation&rft_subject=oceans&rft_subject=TERRAIN ELEVATION&rft_subject=EARTH SCIENCE&rft_subject=LAND SURFACE&rft_subject=TOPOGRAPHY&rft_subject=WATER DEPTH&rft_subject=OCEANS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=CONTINENTAL MARGINS&rft_subject=BATHYMETRY&rft_subject=bathymetry&rft_subject=soundings&rft_subject=echo sounders&rft_subject=multibeam sonar&rft_subject=ECHO SOUNDERS&rft_subject=SHIPS&rft_subject=IPY > INTERNATIONAL POLAR YEAR&rft_subject=CAML > CENSUS OF ANTARCTIC MARINE LIFE&rft_subject=COML > CENSUS OF MARINE LIFE&rft_subject=EBA > Evolution and Biodiversity in the Antarctic&rft_subject=OCEAN > SOUTHERN OCEAN > George V&rft_subject=OCEAN > SOUTHERN OCEAN > Terre Adelie&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=GVdem_2008 when using these data. Users of the gvdem grid must include the following references in any subsequent publications using this dataset: De Santis, L., Brancolini, G., Accettella, D., Cova, A., Caburlotto, A., Donda, F., Pelos, C., Zgur, F., Presti, M., 2007. New insights into submarine geomorphology and depositional processes along the George V Land continental slope and upper rise (East Antarctica). In: A.K. Cooper and C.R. Raymond (Editors), 10th International Symposium on Antarctic Earth Sciences, August 26-31 2007. Scientific Committee on Antarctic Research, Santa Barbara, U.S.A., pp. 1-5. Beaman, R.J., O'Brien, P.E., Post, A.L., De Santis, L., 2011. A new high-resolution bathymetry model for the Terre Adelie and George V continental margin, East Antarctica. Antarctic Science 23(1), 95-103. doi:10.1017/S095410201000074X

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The data are available for non-commercial use. The files are publicly available for download from the provided URLs.

Brief description

This dataset comprises Digital Elevation Models (DEMs) of varying resolutions for the George V and Terre Adelie continental margin, derived by incorporating all available singlebeam and multibeam point depth data into ESRI ArcGIS grids. The purpose was to provide revised DEMs for Census of Antarctic Marine Life (CAML) researchers who required accurate, high-resolution depth models for correlating seabed biota data against the physical environment. The DEM processing method utilised all individual multibeam and singlebeam depth points converted to geographic xyz (long/lat/depth) ASCII files. In addition, an ArcGIS line shapefile of the East Antarctic coastline showing the grounding lines of coastal glaciers and floating ice shelves, was converted to a xyz ASCII file with 0 m as the depth value. Land elevation data utilised the Radarsat Antarctic Mapping Project (RAMP) 200 m DEM data converted to xyz ASCII data. All depth, land and coastline ASCII files were input to Fledermaus 3DEditor visualisation software for removal of noisy data. The cleaned point data were then binned into a gridded surface using Fledermaus DMagic software, resulting in a 0.001-arcdegree (~100 m) resolution DEM with holes where no input data exists. ArcGIS Topogrid software was used to interpolate across the holes to output a full-coverage DEM. ArcGIS was used to produce the additional 0.0025-arcdegree (~250 m) and 0.005-arcdegree (~500 m) resolution grids. Full processing details can be viewed in: Beaman, R.J., O'Brien, P.E., Post, A.L., De Santis, L., 2011. A new high-resolution bathymetry model for the Terre Adelie and George V continental margin, East Antarctica. Antarctic Science 23(1), 95-103. doi:10.1017/S095410201000074X

Issued: 2009-03-09

Data time period: 2008-03-17 to 2010-07-16

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148,-63 148,-69 138,-69 138,-63 148,-63

143,-66

text: northlimit=-63; southlimit=-69; westlimit=138; eastLimit=148; projection=WGS84

Subjects
BATHYMETRY | BATHYMETRY/SEAFLOOR TOPOGRAPHY | CAML > CENSUS OF ANTARCTIC MARINE LIFE | COML > CENSUS OF MARINE LIFE | CONTINENT > ANTARCTICA | CONTINENTAL MARGINS | EARTH SCIENCE | EBA > Evolution and Biodiversity in the Antarctic | ECHO SOUNDERS | GEOGRAPHIC REGION > POLAR | IPY > INTERNATIONAL POLAR YEAR | LAND SURFACE | OCEAN > SOUTHERN OCEAN > George V | OCEAN > SOUTHERN OCEAN > Terre Adelie | OCEANS | SHIPS | TERRAIN ELEVATION | TOPOGRAPHY | WATER DEPTH | bathymetry | echo sounders | elevation | multibeam sonar | oceans | soundings |

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536

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