BGS Hosted Metadata
High resolution vector contours for Antarctica - VERSION 7.3
A continuous contour dataset at 100 m intervals for all land south of 60degS, excluding the Balleny Islands. The vertical datum of the contours is EGM2008. Contours are extracted primarily from the PGC Reference Elevation Model of Antarctica (REMA) v1.1 with certain islands filled from Copernicus WorldDEM. Further small areas are interpreted from satellite imagery, and Peter I Oy contours are from the Norwegian Polar Institute. Sources of individual line segments are contained in the attribute table and full compilation information is given in the lineage statement.
Note: contours overlap the coastline in small areas, due to resolution of the data used in creation of the lines, and potential errors in coastline and/or contour data. Certain areas are known to contain erroneous data due to faults in the original DEM data.
Simple
- Date (Creation)
- 2020-10-22
- Date (Revision)
- 2020-10-22
- Date (Publication)
- 2020-10-22
- Date (released)
- 2020-10-22
- Edition
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7.3
- Unique resource identifier
- https://doi.org/10.5285/4bd20a2b-df7d-46a2-acdf-5104c82ff4c7
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01425
- Codespace
- Other citation details
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Please cite this item as: Gerrish, L. (2020). High resolution vector contours for Antarctica - VERSION 7.3 (Version 7.3) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/4bd20a2b-df7d-46a2-acdf-5104c82ff4c7
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Gerrish, Laura Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Antarctic Digital Database
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Elevation
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Topographic mapping
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- Place
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Antarctica
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Creative Commons Attribution 4.0 International
- Use constraints
- Other restrictions
- Other constraints
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This information is licensed under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). To view this licence, visit
Please cite this item as: 'Gerrish, L., Fretwell, P., & Cooper, P. (2020). High resolution vector contours for Antarctica (7.3) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/571C967C-D007-45B3-B327-64D11CB496F4'.
If using for a graphic or if short on space, please cite as 'data from the SCAR Antarctic Digital Database, accessed [year]'
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Unique resource identifier
- doi
- Codespace
-
doi
- Association Type
- Cross reference
- Unique resource identifier
- doi
- Codespace
-
doi
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Environment
- Geoscientific information
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- Begin date
- 1993-01-01
- End date
- 2020-10-30
- Supplemental Information
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It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
- Title
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
-
6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
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Name Version application/geopackage+sqlite3 application/xml
- Units of distribution
-
bytes
- Transfer size
- 1390411776
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4bd20a2b-df7d-46a2-acdf-5104c82ff4c7 Get Data
- Units of distribution
-
bytes
- Transfer size
- 1390411776
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4bd20a2b-df7d-46a2-acdf-5104c82ff4c7 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
All processing described here was performed in ArcGIS Pro version 2.6.
A composite Digital Elevation Model (DEM) was created comprising of three datasets from the Reference Elevation Model of Antarctica v1.1: REMA_100m_peninsula_dem_filled, REMA_100m_dem and REMA_200m_dem_filled. These DEMs were first converted from ellipsoidal height to height above EGM2008 geoid and then mosaicked together in respective order at 100 m spatial resolution. This 100 m DEM was smoothed by performing Focal Statistics using a 3x3 cell size.
100 m contours were extracted and all contours with a height 1m were deleted, as well as erroneous offshore contours. All contour dangles were identified and then fixed to create a continuous dataset. They were fixed either by interpreting the correct line from satellite imagery or from Copernicus WorldDEM 90m contours. Such lines are attributed with interpreted in the source field and should be treated with caution. In other locations where the contours significantly overlapped the coastline, contours were redrawn/interpreted to not go offshore. In certain locations, primarily some islands on the Antarctic Peninsula, REMA data was insufficient to produce contours. In these places, contours were produced from the 'Copernicus WorldDEM 90m' DEM and smoothed by 300 m using a PAEK smoothing algorithm. Contours for Peter I Oy were incorporated from the Norwegian Polar Institute Data at 100 m intervals. The source of every line is written in the attribute table.
All contours were merged together and lines 150 m in length were deleted. Further lines 1500 m were deleted in non-mountainous regions, so as to avoid deleting small mountain peak contours but to still simplify the main dataset. These regions were interpreted manually using the hillshade of the DEM used to produce the contours.
Metadata
- File identifier
- 4bd20a2b-df7d-46a2-acdf-5104c82ff4c7 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2020-10-22
- Metadata standard name
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ISO 19115 Geographic Information - Metadata
- Metadata standard version
-
ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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