Abstract:
Medium resolution dataset of rock outcrop in Antarctica. Data have been prepared from various map and remotely sensed datasets ranging from 1960s-2025. This dataset has been generalised from the high resolution version. The large majority of data was compiled in 1993 and the quality and accuracy is uncertain. The automatically extracted rock outcrop layer provides a more accurate dataset in most locations.
Changes in v7.11 include new data for the area between 20degW and 80degW and as far south as 82degS. sourcedate and revdate attributes were updated to a consistent YYYY-MM-DD format. To indicate limited date precision for earlier records, sourceprec and revprec attributes were introduced.
Data compiled, managed and distributed by the Mapping and Geographic Information Centre and the UK Polar Data Centre, British Antarctic Survey on behalf of the Scientific Committee on Antarctic Research.
Keywords:
Antarctic Digital Database, Antarctica, Geology, Nunataks, Topographic mapping
Skachkova, A., Gerrish, L., Fretwell, P., & Cooper, P. (2025). Medium resolution vector polygons of Antarctic rock outcrop - VERSION 7.11 (Version 7.11) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/3f0c400f-04b9-4819-98cb-f6b53716aca5
| Access Constraints: | None |
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| Use Constraints: | This information is licensed under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). To view this licence, visit https://creativecommons.org/licenses/by/4.0/ Please cite this item as: Skachkova, A., Gerrish, L., Fretwell, P., & Cooper, P. (2025). Medium resolution vector polygons of Antarctic rock outcrop - VERSION 7.11 (Version 7.11) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/3f0c400f-04b9-4819-98cb-f6b53716aca5 If using for a graphic or if short on space, please cite as 'data from the SCAR Antarctic Digital Database, 2025' |
| Creation Date: | 2025-11-04 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK Polar Data Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Aliaksandra C G Skachkova |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Ms Laura Gerrish |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Peter T Fretwell |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Paul Cooper |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Quality: | See lineage information | |
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| Lineage/Methodology: | Data compiled from various mapping and remote sensing sources. Exact data sources are currently missing from the attribute table for the majority of data - the large majority was compiled in 1993, digitized from the USGS 1:250k reconnaissance series maps dating from the 1960s to 1990s, and DOS 1:250k series maps dating from the 1960s and 1970s. Exact data sources can be provided on request in the format of vector lines. The data newly added for the v7.11 release (the area between 20degW and 80degW and as far south as 82degS, except for South Orkney Islands, north of Clarence Island, Deception, Seymour, and Cockburn Islands, and Rothera Point) was generalised from the high resolution version by deleting polygons < 0.02 km2 in size and smoothing the polygons. The exact source with the corresponding sourcedate attribute can be found in the attribute table of the dataset. Additionally, the sourceprec field, identifying source time precision (day, month, or year), is provided. The revdate field with the corresponding revprec attribute identifies the date of data revision. Please note: due to the versioning of the ADD, there are no versions 7.4-7.9 for this specific dataset. |
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| Temporal Coverage: | |
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| Start Date | 1993-01-01 |
| End Date | 2025-04-01 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -90 |
| Northernmost | -60 |
| Longitude | |
| Westernmost | -180 |
| Easternmost | 180 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | N/A |
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 30 MB |
| Distribution Format | SHP |
| Fees | N/A |
| Data Storage: | This dataset constains 2 files: - GeoPackage ~23.4 MB - Shapefile ~7.2 MB |