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

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

Simple

Identification info

Alternate title
A bathymetric Digital Elevation Model (DEM) of the George V and Terre Adelie continental shelf and margin
Date (Publication)
2011-05-11
Edition
3

Originator

Beaman, R.J.

Publisher

Australian Antarctic Data Centre

Principal investigator

BEAMAN, ROBIN JORDAN
James Cook University PO Box 6811
Cairns
QLD
4870
Australia

Collaborator

BEAMAN, ROBIN JORDAN
James Cook University PO Box 6811
Cairns
QLD
4870
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/GVdem_2008

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Spatial resolution

Spatial resolution
500

Spatial resolution

Spatial resolution
500
Topic category
  • Oceans
  • Elevation

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2008-03-17 2010-07-16

Extent

Description
Vertical Extent - Altitude

Vertical element

Minimum value
0
Maximum value
2391
Identifier
urn:x-ogc:def:cs:EPSG:6499
Name
Vertical CS. Axis: height (H). Orientation: up. UoM: m.
Identifier
urn:x-ogc:def:axis:EPSG:114
Name
height

Extent

Description
Vertical Extent - Depth

Vertical element

Minimum value
0
Maximum value
4108
Identifier
urn:x-ogc:def:cs:EPSG:6498
Name
Vertical CS. Axis: depth (D). Orientation: down. UoM: m.
Identifier
urn:x-ogc:def:axis:EPSG:113
Name
depth
Title
A new high-resolution bathymetry model for the Terre Adelie and George V continental margin, East Antarctica.
Date (Publication)
2011
Citation identifier
1

Citation identifier
doi:10.1017/S095410201000074X

Author

Beaman, R.J., O'Brien, P.E., Post, A.L., De Santis, L.
Name
Antarctic Science
Issue identification
23
Page
95-103
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > CONTINENTAL MARGINS
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
Keywords
  • bathymetry
  • soundings
  • echo sounders
  • multibeam sonar
NASA/GCMD Earth Science Keywords
  • ECHO SOUNDERS
NASA/GCMD Earth Science Keywords
  • SHIPS
NASA/GCMD Earth Science Keywords
  • IPY > INTERNATIONAL POLAR YEAR
  • CAML > CENSUS OF ANTARCTIC MARINE LIFE
  • COML > CENSUS OF MARINE LIFE
  • EBA > Evolution and Biodiversity in the Antarctic
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN > George V
  • OCEAN > SOUTHERN OCEAN > Terre Adelie
  • CONTINENT > ANTARCTICA
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

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

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
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
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2011-05-11T00:00:00

Distributor

Fees
Free
Planned available datetime
2011-05-11T00:00:00

Distributor

Fees
Free
Planned available datetime
2011-05-11T00:00:00

Distributor

Fees
Free
Planned available datetime
2011-05-11T00:00:00
Units of distribution
MB
Transfer size
193
Distribution format
  • ArcInfo ascii

Units of distribution
MB
Transfer size
34.3
Distribution format
  • ArcInfo ascii

Distribution format
  • ArcInfo ascii

Units of distribution
MB
Transfer size
35.2
Distribution format
  • Net CDF

OnLine resource
GET DATA

Download point for the data - ArcInfo ascii file - Bathymetric DEM 138E-148E, 63S-69S, 0.001-arcdegree resolution (nominally 100 m)

OnLine resource
GET DATA

Download point for the data - ArcInfo ascii file - Bathymetric DEM 138E-148E, 63S-69S, 0.0025-arcdegree resolution (nominally 250 m)

OnLine resource
GET DATA

Download point for the data - ArcInfo ascii file - Bathymetric DEM 138E-148E, 63S-69S, 0.005-arcdegree resolution (nominally 500 m)

OnLine resource
GET DATA

Download point for the net CDF files

OnLine resource
GET DATA

Download point for the image of the chart

OnLine resource
PROJECT HOME PAGE

Deep Reef Explorer page

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
The various multibeam datasets were processed within acquisition software by the originating agencies in order to correct for sound velocity variations within the water column and the removal of noise. No account has been taken of tidal range, so all depth data is assumed to have a vertical datum of mean sea-level (MSL). The final DEMs conform to Order 2 of the International Hydrographic Organisation (IHO) Standards for Hydrographic Surveys Special Publication 44 - 5th Edition February 2008. Both Total Horizontal Uncertainty (THU) and Total Vertical Uncertainty (TVU) increase according to depth, so the maximum allowable THU is 30m up to 100m depth, 70m up to 500m depth, 120m up to 1000m depth, 220m up to 2000m depth, and so on. Realistically, however, the accuracy of GPS used for positioning during modern surveys is far better than the maximum allowable THU for Order 2 surveys, and so the THU figures quoted here are very conservative. The maximum allowable TVU is 2.5 m up to 100 m; 11.5 m up to 500 m depth; 23 m up to 1000 m depth; 46 m up to 2000 m depth and so on.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2009-03-09 - record created by Robin Beaman. 2009-05-11 - record revised and updated by Robin Beaman and Dave Connell. 2009-05-15 - record updated by Dave Connell from suggestions by Rob Beaman. 2010-10-18 - record updated by Robin Beaman, to reflect Version 2 of gvdem grid. 2011-01-27 - record updated by Robin Beaman. 2011-05-13 - record updated by Dave Connell to reflect version 3 of gvdem grid. 2015-07-22 - record updated by Dave Connell to add new data provided by Ben Raymond. 2015-07-29 - record updated by Dave Connell at the request of Ben Raymond. 2016-10-17 - record updated by Dave Connell to add an image. 2019-03-19 - record updated by Dave Connell for ISO compliance.

Metadata

Metadata identifier
string/GVdem_2008

Language
English
Character encoding
UTF8

Author

BEAMAN, ROBIN JORDAN
James Cook University PO Box 6811
Cairns
QLD
4870
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
ba595ce1-6866-48f6-a796-443e603291ae

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-03-19T13:50:49

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/GVdem_2008

Point of truth for the metadata record

Date info (Creation)
2009-03-09T00:00:00
Date info (Last Update)
2019-03-19

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


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Not available