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.

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

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Leeds	Nayak, Ipseeta		Author
University of Leeds	Quincey, Duncan		Author
University of Leeds	Carrivick, Jonathan		Author
Leeds Beckett University	Sutherland, Jenna		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency: As needed

Maintenance note: Completed

Global Change Master Directory (GCMD) Science Keywords

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: 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: Data supplied under Open Government Licence v3.0

Use constraints: Other restrictions

Other constraints: No restrictions apply.

Unique resource identifier: url

Codespace: url

Association Type: Larger work citation

Unique resource identifier: url

Codespace: url

Association Type: Cross reference

Unique resource identifier: doi

Codespace: doi

Association Type: Cross reference

Unique resource identifier: doi

Codespace: doi

Association Type: Cross reference

Spatial representation type: Text, table

Language: English

Character set: 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

No information provided.

Vertical datum

No information provided.

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: European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication): 2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	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		PDCServiceDesk@bas.ac.uk	Distributor

Distributor format

Name	Version
image/tiff
text/plain

Units of distribution: bytes

Transfer size: 238341325

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=61ab53f8-5eaa-447b-a35a-bd1ae10c3973	Get Data

Units of distribution: bytes

Transfer size: 238341325

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=61ab53f8-5eaa-447b-a35a-bd1ae10c3973	Get Data

Hierarchy level: 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.

Metadata

File identifier: 61ab53f8-5eaa-447b-a35a-bd1ae10c3973 XML

Metadata language: English

Character set: UTF8

Hierarchy level: 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)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact

Overviews

Spatial extent

Provided by

Access to the catalogue

Read here the full details and access to the data.

Simple