NERC Data Catalogue Service
Subglacial overdeepenings in selected valley glaciers in Central Himalayas, New Zealand Southern Alps, European Alps, Peruvian Andes and Alaska, 2006-2018
The dataset contains depth information (in meters) for pixels of subglacial overdeepenings with an area of 10000 m2 or larger, across five regions: Alaska, European Alps, New Zealand Southern Alps, the Central Himalayas, and the Peruvian Andes. These overdeepenings were derived by subtracting ice thickness data from Digital Elevation Models (DEMs) that describe the surface topography. Five ice thickness models were used for all regions: Farinotti's Ensemble, GlabTop2, Huss and Farinotti were downloaded from Farinotti et al., (2019). OGGM's ice thickness was downloaded from Farinotti et al., 2019 for all regions except for the Himalayas where it was generated by keeping the default same. Millan's ice thickness was downloaded from Millan et al., (2022). The primary DEM used was the ALOS PALSAR DEM. For Central Himalayas, in addition to ALOS PALSAR, three other DEMs were used: ASTER, SRTM, and Copernicus.
NERC standard grant NE/S013318/1.
Simple
- Date (Creation)
- 2025-04-30
- Date (Revision)
- 2025-04-30
- Date (Publication)
- 2025-04-30
- Date (released)
- 2025-04-30
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/61ab53f8-5eaa-447b-a35a-bd1ae10c3973
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/02052
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/S013318/1
- Codespace
- award
- Other citation details
- Please cite this item as: Nayak, I., Quincey, D., Carrivick, J., & Sutherland, J. (2025). Subglacial overdeepenings in selected valley glaciers in Central Himalayas, New Zealand Southern Alps, European Alps, Peruvian Andes and Alaska, 2006-2018 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/61ab53f8-5eaa-447b-a35a-bd1ae10c3973
- 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
- Global Change Master Directory (GCMD) Science Keywords
-
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glaciers
- EARTH SCIENCE > Land Surface > Geomorphology > Glacial Landforms/Processes
- Theme
-
- landscape evolution
- multi-model
- overdeepenings
- subglacial
- valley glaciers
- Place
-
- Alaska,Central Himalayas,Peruvian Andes,European Alps,New Zealand Southern Alps Global
- 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
-
- Elevation
- Imagery base maps earth cover
- Inland waters
))
- Begin date
- 2006-01-01
- End date
- 2018-01-01
Vertical extent
- Minimum value
- 3866.59
- Maximum value
- 7253.96
Vertical CS
Vertical datum
- 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
- Name
- text/plain
- Units of distribution
- bytes
- Transfer size
- 238341325
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Units of distribution
- bytes
- Transfer size
- 238341325
- OnLine resource
-
Get Data
(
WWW:LINK-1.0-http--link
)
Download data
- Hierarchy level
- dataset Dataset
- Statement
-
Methodology:
ArcGIS Pro version 3.10 was used for data handling and processing. Ice thicknesses, in raster format, were subtracted from the DEM using the raster calculator in ArcGIS to derive glacier bed topography. This bed topography was filled using the ArcGIS fill tool. The original bed topography was then subtracted from the filled bed topography using ArcGIS raster calculator to estimate overdeepening locations, areas and depths.
Data collection:
Data were processed using ArcGIS pro version 3.10.
Data quality:
Some overdeepenings that are smaller than the pixel size might not have been estimated. Spatial resolution is 50 m x 50 m.
- File identifier
- 61ab53f8-5eaa-447b-a35a-bd1ae10c3973 XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2025-04-30
- 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/
Overviews
Spatial extent
Provided by
