NERC Data Catalogue Service
Annual georeferenced rasters of ice-surface velocity for the Larsen C ice shelf, Antarctica, between 2015 and 2022
Magnitude and x and y components of surface speed on the Larsen C 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/10.5285/4259989a-8485-4066-a2e8-9678d63056b4
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01949
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/T008016/1
- Codespace
- award
- Other citation details
- Please cite this item as: Luckman, A., & Bevan, S. (2024). Annual georeferenced rasters of ice-surface velocity for the Larsen C ice shelf, Antarctica, between 2015 and 2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4259989a-8485-4066-a2e8-9678d63056b4
- Credit
- No credit.
- Status
- completed Completed
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Maintenance and update frequency
- asNeeded As needed
- Maintenance note
- completed Completed
- Theme
-
- Antarctica
- Larsen C
- feature-tracking
- ice shelf
- velocity
- Place
-
- Larsen C ice shelf Antarctica
- GEMET - INSPIRE themes, version 1.0
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- no limitations
- Use constraints
- license License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- Data supplied under Open Government Licence v3.0
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- No restrictions apply.
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- largerWorkCitation Larger work citation
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
- Unique resource identifier
- doi
- Codespace
- doi
- Association Type
- crossReference Cross reference
- Unique resource identifier
- doi
- Codespace
- doi
- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Inland waters
))
- 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.
Distributor
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Name
- image/png
- Name
- image/tiff
- Units of distribution
- bytes
- Transfer size
- 945396122
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Units of distribution
- bytes
- Transfer size
- 945396122
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Hierarchy level
- dataset Dataset
- Statement
-
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.
- File identifier
- 4259989a-8485-4066-a2e8-9678d63056b4 XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2024-12-09
- Metadata standard name
- ISO 19115 Geographic Information - Metadata
- Metadata standard version
- ISO 19115:2003(E)
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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