Greenland Ice Sheet Ice Slab Expansion and Thickening
We use airborne accumulation radar data acquired over the Greenland Ice Sheet between 2002 and 2018 to identify changes in ice slab extent and thickness. We show that ice slabs several metres thick were already present at least as early as 2002. Between 2012 and 2018, they expanded 13,400-17,600 inl...
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crwiley:10.1002/essoar.10512372.2 2024-06-02T08:07:18+00:00 Greenland Ice Sheet Ice Slab Expansion and Thickening Jullien, Nicolas Tedstone, Andrew Jachnik Machguth, Horst Karlsson, Nanna B. Helm, Veit 2023 http://dx.doi.org/10.1002/essoar.10512372.2 unknown Wiley posted-content 2023 crwiley https://doi.org/10.1002/essoar.10512372.2 2024-05-03T11:25:19Z We use airborne accumulation radar data acquired over the Greenland Ice Sheet between 2002 and 2018 to identify changes in ice slab extent and thickness. We show that ice slabs several metres thick were already present at least as early as 2002. Between 2012 and 2018, they expanded 13,400-17,600 inland, or by 37-44%. Our results document that the extremely warm summer of 2012 produced near-surface ice layers at higher elevations, enabling ice slabs to develop in locations with only moderate melting in the following summers. With repeated flights over a transect in southwest Greenland, we show that ice slabs can thicken from above and on their undersides. Moderate melting primarily thickens ice slabs by top-down accretion, while large melting events can also trigger ice accretion below the slabs. Other/Unknown Material Greenland Ice Sheet Wiley Online Library Greenland |
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Open Polar |
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Wiley Online Library |
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unknown |
description |
We use airborne accumulation radar data acquired over the Greenland Ice Sheet between 2002 and 2018 to identify changes in ice slab extent and thickness. We show that ice slabs several metres thick were already present at least as early as 2002. Between 2012 and 2018, they expanded 13,400-17,600 inland, or by 37-44%. Our results document that the extremely warm summer of 2012 produced near-surface ice layers at higher elevations, enabling ice slabs to develop in locations with only moderate melting in the following summers. With repeated flights over a transect in southwest Greenland, we show that ice slabs can thicken from above and on their undersides. Moderate melting primarily thickens ice slabs by top-down accretion, while large melting events can also trigger ice accretion below the slabs. |
format |
Other/Unknown Material |
author |
Jullien, Nicolas Tedstone, Andrew Jachnik Machguth, Horst Karlsson, Nanna B. Helm, Veit |
spellingShingle |
Jullien, Nicolas Tedstone, Andrew Jachnik Machguth, Horst Karlsson, Nanna B. Helm, Veit Greenland Ice Sheet Ice Slab Expansion and Thickening |
author_facet |
Jullien, Nicolas Tedstone, Andrew Jachnik Machguth, Horst Karlsson, Nanna B. Helm, Veit |
author_sort |
Jullien, Nicolas |
title |
Greenland Ice Sheet Ice Slab Expansion and Thickening |
title_short |
Greenland Ice Sheet Ice Slab Expansion and Thickening |
title_full |
Greenland Ice Sheet Ice Slab Expansion and Thickening |
title_fullStr |
Greenland Ice Sheet Ice Slab Expansion and Thickening |
title_full_unstemmed |
Greenland Ice Sheet Ice Slab Expansion and Thickening |
title_sort |
greenland ice sheet ice slab expansion and thickening |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/essoar.10512372.2 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_doi |
https://doi.org/10.1002/essoar.10512372.2 |
_version_ |
1800752371344605184 |