BGS Hosted Metadata
Simulated retreat of the Minch Ice Stream, northwest Scotland, during the last glacial cycle
Uncertainties in future sea level projections are dominated by our limited understanding of the dynamical processes that control instabilities of marine ice sheets. A valuable case to examine these processes is the last deglaciation of the British-Irish Ice Sheet. The Minch Ice Stream, which drained a large proportion of ice from the northwest sector of the British-Irish Ice Sheet during the last deglaciation, is well constrained, with abundant empirical data which could be used to inform, validate and analyse numerical ice sheet simulations. We use BISICLES, a higher-order ice sheet model, to examine the dynamical processes that controlled the retreat of the Minch Ice Stream. We simulate retreat from the shelf edge under constant "warm" surface mass balance and subshelf melt, to isolate the role of internal ice dynamics from external forcings. The model simulates a slowdown of retreat as the ice stream becomes laterally confined at a "pinning-point" between mainland Scotland and the Isle of Lewis. At this stage, the presence of ice shelves became a major control on deglaciation, providing buttressing to upstream ice. Subsequently, the presence of a reverse slope inside the Minch Strait produces an acceleration in retreat, leading to a "collapsed" state, even when the climate returns to the initial "cold" conditions. Our simulations demonstrate the importance of the Marine Ice Sheet Instability and ice shelf buttressing during the deglaciation of parts of the British-Irish Ice Sheet. Thus, geological data could be used to constrain these processes in ice sheet models used for projecting the future of our contemporary ice sheets.
Funding was provided by the Natural Environment Research Council (NERC) SPHERES Doctoral Training Partnership (NE/L002574/1) with CASE support from the British Geological Survey.
Simple
- Date (Creation)
- 2018-09-14
- Date (Revision)
- 2018-09-14
- Date (Publication)
- 2018-09-14
- Date (released)
- 2018-09-14
- Edition
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None
- Unique resource identifier
- https://doi.org/10.5285/5f5bad08-c968-4840-8bb0-1388ce70d42e
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01097
- Codespace
- Unique resource identifier
- NE/L002574/1
- Codespace
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award
- Other citation details
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Please cite this item as: Gandy, N. (2018). Simulated retreat of the Minch Ice Stream, northwest Scotland, during the last glacial cycle (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/5f5bad08-c968-4840-8bb0-1388ce70d42e
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role The University of Leeds
Gandy, Niall Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Global Change Master Directory (GCMD) Science Keywords
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- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets
- EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance
- EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion
- EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
- EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Ice Sheets
- EARTH SCIENCE > Solid Earth > Geomorphology > Glacial Landforms/Processes
- EARTH SCIENCE > Paleoclimate > Paleoclimate Reconstructions
- Theme
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BISICLES
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British-Irish Ice Sheet
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Ice Shelf Buttressing
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Marine Ice Sheet Instability
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Minch Palaeo Ice Stream
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- Place
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Scotland United Kingdom
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Ireland
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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
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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
- Other restrictions
- Other constraints
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This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- Other restrictions
- Other constraints
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No restrictions apply.
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- dependency
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- Cross reference
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
- Environment
- Geoscientific information
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- Supplemental Information
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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
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
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6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
-
Name Version text/plain application/netcdf
- Units of distribution
-
bytes
- Transfer size
- 22548578304
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=5f5bad08-c968-4840-8bb0-1388ce70d42e Get Data
- Units of distribution
-
bytes
- Transfer size
- 22548578304
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=5f5bad08-c968-4840-8bb0-1388ce70d42e Get Data
- Hierarchy level
- Dataset
- Statement
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Data collection:
The data was produced through a series of experiments using the BISICLES ice sheet model. See referenced publication for the full methodology.
Instrumentation: The BISICLES ice sheet model, using the branch available at;
https://anag-repo.lbl.gov/svn/BISICLES/public/branches/smb/
Resolution:
4km x 4km resolution for the entire domain, 500 m x 500 m resolution at the ice sheet margin in the Minch Palaeo Ice Stream catchment. See referenced publication for details of domain resolution set-up.
Metadata
- File identifier
- 5f5bad08-c968-4840-8bb0-1388ce70d42e XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2018-09-14
- Metadata standard name
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ISO 19115 Geographic Information - Metadata
- Metadata standard version
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ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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