BGS Hosted Metadata
Annual georeferenced rasters of ice-surface velocity for the Brunt ice shelf, Antarctica, between 2015 and 2022
Magnitude and x and y components of surface speed on the Brunt ice shelf, Antarctica. The datasets are annual means from 2015 to 2022 at a horizontal resolution of 100 m. The data are based on feature tracking of Sentinel 1 Synthetic Aperture Radar (SAR) satellite data. The velocities were created to support a NERC-funded project investigating ice-shelf rift propagation, by Prof. Adrian Luckman.
NERC standard grant NE/T008016/1.
Simple
- Date (Creation)
- 2024-12-09
- Date (Revision)
- 2024-12-09
- Date (Publication)
- 2024-12-09
- Date (released)
- 2024-12-09
- Edition
-
1.0
- Unique resource identifier
- https://doi.org/10.5285/c4ec0104-0051-49b4-ae41-a5e9a961ae09
- Codespace
-
doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01950
- Codespace
- Unique resource identifier
- NE/T008016/1
- Codespace
-
award
- Other citation details
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Please cite this item as: Luckman, A., & Bevan, S. (2024). Annual georeferenced rasters of ice-surface velocity for the Brunt ice shelf, Antarctica, between 2015 and 2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/c4ec0104-0051-49b4-ae41-a5e9a961ae09
- Credit
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No credit.
- Status
- Completed
- Point of contact
-
Organisation name Individual name Electronic mail address Role Swansea University Luckman, Adrian Author Swansea University Bevan, Suzanne Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Antarctica
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Brunt
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feature-tracking
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ice shelf
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velocity
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- Place
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Brunt ice shelf 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
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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Data supplied under Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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No restrictions apply.
- Unique resource identifier
- doi
- Codespace
-
doi
- Association Type
- Cross reference
- Unique resource identifier
- doi
- Codespace
-
doi
- Association Type
- Cross reference
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Larger work citation
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Inland waters
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- Begin date
- 2015-01-01
- End date
- 2022-12-31
- Supplemental Information
-
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
-
Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
-
Name Version image/png image/tiff
- Units of distribution
-
bytes
- Transfer size
- 692689306
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=c4ec0104-0051-49b4-ae41-a5e9a961ae09 Get Data
- Units of distribution
-
bytes
- Transfer size
- 692689306
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=c4ec0104-0051-49b4-ae41-a5e9a961ae09 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Speeds were measured by feature-tracking Sentinel-1A and 1B SAR images with a temporal separation of 6 or 12 days. Displacements in SAR image geometry were filtered twice: first by a signal to noise ratio based on the cross-correlation of image patches, and then according to deviation from the mean displacement within a neighbourhood. The filtered displacements were converted from the SAR geometry to ground-range geometry, and the results geocoded using the RAMP Digital Elevation Model (Liu et al., 2015). The vertical tidal signal was removed using the Circum-Antarctic Tidal Simulation version 2008 (CATS:2008) model (Howard and Padman, 2015). Individual maps of velocity (between 30 and 122 per year) were averaged to create annual means.
Data collection:
The Sentinel data were supplied by ESA and processed using Gamma Remote Sensing software.
Data quality:
The name of each annual Geotiff contains the number of feature-tracked image pairs contributing to the measurement. Images which make up a pair may have either a 6-day (between Sentinel 1A and Sentinel 1B) or a 12-day time separation (Sentinel 1A only). Image-pairs with a 12-day separation have poorer velocity retrieval owing to increased surface decorrelation. Therefore, quality is best for the 2017, 2018, 2019 and 2020 means when both Sentinel 1A and Sentinel 1B were both in operation.
Metadata
- File identifier
- c4ec0104-0051-49b4-ae41-a5e9a961ae09 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2024-12-09
- 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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