NERC Data Catalogue Service
Thwaites Glacier ice surface speed change from January 2012 to January 2021
A map of changes in ice surface speed in metres/year for Thwaites Glacier, West Antarctica, between January 2012 and January 2021. Speeds based on feature tracking of satellite synthetic aperture radar data.
The work was funded by NERC projects NE/P011365/1 and NE/S006605/1.
Simple
- Date (Creation)
- 2021-05-25
- Date (Revision)
- 2021-05-25
- Date (Publication)
- 2021-05-25
- Date (released)
- 2021-05-25
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/668bf042-d0de-4741-a62e-2ae93b6f7106
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01506
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/P011365/1
- Codespace
- award
- Unique resource identifier
- NE/S006605/1
- Codespace
- award
- Other citation details
- Please cite this item as: Bevan, S., Luckman, A., & Benn, D. (2021). Thwaites Glacier ice surface speed change from January 2012 to January 2021 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/668bf042-d0de-4741-a62e-2ae93b6f7106
- 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
-
- ITGC
- Thwaites Glacier
- acceleration
- ice surface speed
- Place
-
- Thwaites Glacier 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
- 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
-
- Geoscientific information
- Imagery base maps earth cover
))
- Begin date
- 2012-01-01
- End date
- 2021-01-31
- 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/tiff
- Units of distribution
- bytes
- Transfer size
- 9122611
- OnLine resource
-
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- Hierarchy level
- dataset Dataset
- Statement
-
Methodology:
January 2012 speeds were measures using feature-tracking of TerraSAR-X data between a pair of images acquired on 17/01/2012 and 28/01/2012. Speeds were measured at a horizontal resolution of 40 m. Image data were supplied by DLR.
The 2021 speeds were measured using feature-tracking Sentinel-1A and Sentinel-1B images and are a mean of all ten 6- or 12-day pairs acquired in January 2021. Speeds were measured at a horizontal resolution of 100 m and oversampled to 40 m before differencing (2021-2012) with the 2012 speeds. Image data were supplied by ESA.
Data collection:
Feature-tracking was carried out using Gamma Remote Sensing software 20190603.
Data quality:
All feature-tracked displacements 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 displacements were converted from the SAR image geometry to ground range geometry, and the results geocoded using the RAMP DEM (Liu et al., 2015). N/A values in the difference geotiff are where either the 2012 or 2021 data are missing.
- File identifier
- 668bf042-d0de-4741-a62e-2ae93b6f7106 XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2021-05-25
- 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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