A high-resolution bedrock map for the Antarctic Peninsula
Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsul...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2014-07-01
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| Series: | The Cryosphere |
| Online Access: | http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf |
| _version_ | 1819237634606628864 |
|---|---|
| author | M. Huss D. Farinotti |
| author_facet | M. Huss D. Farinotti |
| author_sort | M. Huss |
| collection | DOAJ |
| description | Assessing and projecting the dynamic response of glaciers on the Antarctic
Peninsula to changed atmospheric and oceanic forcing requires high-resolution
ice thickness data as an essential geometric constraint for ice flow models.
Here, we derive a complete bedrock data set for the Antarctic Peninsula north
of 70° S on a 100 m grid. We calculate distributed ice thickness
based on surface topography and simple ice dynamic modelling. Our approach is
constrained with all available thickness measurements from Operation
IceBridge and gridded ice flow speeds for the entire study region. The new
data set resolves the rugged subglacial topography in great detail, indicates
deeply incised troughs, and shows that 34% of the ice volume is grounded
below sea level. The Antarctic Peninsula has the potential to raise global
sea level by 69 ± 5 mm. In comparison to Bedmap2, covering all
Antarctica on a 1 km grid, a significantly higher mean ice thickness
(+48%) is found. |
| first_indexed | 2024-12-23T13:23:27Z |
| format | Article |
| id | doaj.art-04100345a7d44952841c237f125092fa |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-12-23T13:23:27Z |
| publishDate | 2014-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-04100345a7d44952841c237f125092fa2022-12-21T17:45:22ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242014-07-01841261127310.5194/tc-8-1261-2014A high-resolution bedrock map for the Antarctic PeninsulaM. Huss0D. Farinotti1Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, 8093 Zurich, SwitzerlandGerman Research Centre for Geosciences (GFZ), Telegrafenberg, 14473 Potsdam, GermanyAssessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsula north of 70° S on a 100 m grid. We calculate distributed ice thickness based on surface topography and simple ice dynamic modelling. Our approach is constrained with all available thickness measurements from Operation IceBridge and gridded ice flow speeds for the entire study region. The new data set resolves the rugged subglacial topography in great detail, indicates deeply incised troughs, and shows that 34% of the ice volume is grounded below sea level. The Antarctic Peninsula has the potential to raise global sea level by 69 ± 5 mm. In comparison to Bedmap2, covering all Antarctica on a 1 km grid, a significantly higher mean ice thickness (+48%) is found.http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf |
| spellingShingle | M. Huss D. Farinotti A high-resolution bedrock map for the Antarctic Peninsula The Cryosphere |
| title | A high-resolution bedrock map for the Antarctic Peninsula |
| title_full | A high-resolution bedrock map for the Antarctic Peninsula |
| title_fullStr | A high-resolution bedrock map for the Antarctic Peninsula |
| title_full_unstemmed | A high-resolution bedrock map for the Antarctic Peninsula |
| title_short | A high-resolution bedrock map for the Antarctic Peninsula |
| title_sort | high resolution bedrock map for the antarctic peninsula |
| url | http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf |
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