NERC Data Catalogue Service
Terminus Positions of Jakobshavn Isbrae, Greenland, 2022-2023
The dataset consists of a single shapefile containing terminus positions of Jakobshavn Isbrae, Ilulissat Icefjord, Greenland, between 2022-2023. Jakobshavn Isbrae is a fast-flowing outlet glacier situated in central west Greenland and terminates in Ilulissat Icefjord, a deep fjord basin renewed by water from Disko Bay (Gladish et al., 2015). Each polyline feature in this dataset reflects a terminus position manually digitised using synthetic aperture radar (SAR) mosaics downloaded from the National Snow and Ice Data Center (NSIDC; Joughin, 2021). The dataset comprises 31 terminus positions in total, each digitised from imagery collected between 02/01/2022 and 28/12/2022.
Hannah Picton acknowledges funding from the E4 DTP (Edinburgh Earth, Ecology and Environment Doctoral Training Partnership), NE/S007407/1.
Simple
- Date (Creation)
- 2024-06-20
- Date (Revision)
- 2024-06-20
- Date (Publication)
- 2024-06-20
- Date (released)
- 2024-06-20
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/30f96898-c12a-4783-8a31-0628b74a616a
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01856
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/S007407/1
- Codespace
- award
- Other citation details
- Please cite this item as: Picton, H. (2024). Terminus Positions of Jakobshavn Isbrae, Greenland, 2022-2023 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/30f96898-c12a-4783-8a31-0628b74a616a
- 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
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- Greenland
- Jakobshavn Isbrae
- ice dynamics
- outlet glacier
- terminus position
- Place
-
- Jakobshavn Isbrae, Ilulissat Icefjord Greenland
- 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
- This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- No restrictions apply.
- Unique resource identifier
- doi
- Codespace
- doi
- 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
- Unique resource identifier
- doi
- Codespace
- doi
- Association Type
- crossReference Cross reference
- Unique resource identifier
- doi
- Codespace
- doi
- Association Type
- crossReference Cross reference
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- largerWorkCitation Larger work citation
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Inland waters
))
- Begin date
- 2022-01-02
- End date
- 2022-12-28
- 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
- text/plain
- Units of distribution
- bytes
- Transfer size
- 152371
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Units of distribution
- bytes
- Transfer size
- 152371
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Hierarchy level
- dataset Dataset
- Statement
-
Methodology:
Each terminus position was manually digitised within QGIS using Sentinel-1A and Sentinel-1B SAR mosaics (Joughin et al., 2016) downloaded from the NSIDC (Joughin, 2021). The details of each SAR mosaic from which a given terminus position was digitised is provided in the attribute table of the shapefile.
Data collection:
QGIS Version 3.22.6.
Data quality:
Black and Joughin (2023) state that the typical uncertainty associated with such manually digitised terminus positions is typically 25 m, however this may be higher at heavily crevassed termini, or at tidewater glaciers which discharge into adjacent melange or sea ice. A quality flag is thus provided for each individual shapefile; a value of 0 indicates certainty regarding the digitisation, whilst a value of 1 indicates the uncertainty may be greater than 25 m. It should however be noted that, at Jakobshavn Isbrae, seasonal changes in terminus position greatly exceed this estimated uncertainty.
- File identifier
- 30f96898-c12a-4783-8a31-0628b74a616a XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2024-06-20
- 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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