Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation
The dynamics of ice sheet interiors during the last deglaciation are poorly constrained, hindering evaluation of ice sheet models. We provide direct evidence of Fennoscandian Ice Sheet (FIS) interior behaviour during deglaciation through surface exposure dating. Our results demonstrate early thinnin...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/19026 https://doi.org/10.1029/2020GL088796 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/19026 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/19026 2023-05-15T14:27:53+02:00 Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation Lane, T.P. Paasche, Øyvind Kvisvik, B. Adamson, K.R. Rodés, Á. Patton, Henry Gomez, N. Gheorghiu, D. Bakke, J. Hubbard, Alun Lloyd 2020-06-20 https://hdl.handle.net/10037/19026 https://doi.org/10.1029/2020GL088796 eng eng Wiley Geophysical Research Letters Norges forskningsråd: 223259 Norges forskningsråd: 200672 Norges forskningsråd: 275181 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/200672/Norway/Glaciations in the Barents Sea area// info:eu-repo/grantAgreement/RCN/INTPART/275181/Norway/Advanced Climate Education and Research// Lane, Paasche Ø, Kvisvik, Adamson K, Rodés, Patton H, Gomez, Gheorghiu D, Bakke J, Hubbard AL. Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation. Geophysical Research Letters. 2020 FRIDAID 1816817 doi:10.1029/2020GL088796 0094-8276 1944-8007 https://hdl.handle.net/10037/19026 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1029/2020GL088796 2021-06-25T17:57:36Z The dynamics of ice sheet interiors during the last deglaciation are poorly constrained, hindering evaluation of ice sheet models. We provide direct evidence of Fennoscandian Ice Sheet (FIS) interior behaviour during deglaciation through surface exposure dating. Our results demonstrate early thinning of the FIS, prior to the Younger Dryas (YD, 12.8‐11.7 ka). Interior thinning in central Norway was concurrent with retreat along the coastline, exposing ice‐free mountainous tracts, potentially as early as 20‐15 ka. The FIS then formed moraines in these ice‐free tracts during the YD. This is contrary to current hypotheses advocating a landscape fully covered by cold, inactive ice during this period. Present empirical and model reconstructions fail to capture rapid interior down‐wastage, increasing uncertainties in ice sheet volume estimates and sea level contributions Article in Journal/Newspaper Arctic Fennoscandian Ice Sheet University of Tromsø: Munin Open Research Archive Norway Geophysical Research Letters 47 14 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Lane, T.P. Paasche, Øyvind Kvisvik, B. Adamson, K.R. Rodés, Á. Patton, Henry Gomez, N. Gheorghiu, D. Bakke, J. Hubbard, Alun Lloyd Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
The dynamics of ice sheet interiors during the last deglaciation are poorly constrained, hindering evaluation of ice sheet models. We provide direct evidence of Fennoscandian Ice Sheet (FIS) interior behaviour during deglaciation through surface exposure dating. Our results demonstrate early thinning of the FIS, prior to the Younger Dryas (YD, 12.8‐11.7 ka). Interior thinning in central Norway was concurrent with retreat along the coastline, exposing ice‐free mountainous tracts, potentially as early as 20‐15 ka. The FIS then formed moraines in these ice‐free tracts during the YD. This is contrary to current hypotheses advocating a landscape fully covered by cold, inactive ice during this period. Present empirical and model reconstructions fail to capture rapid interior down‐wastage, increasing uncertainties in ice sheet volume estimates and sea level contributions |
format |
Article in Journal/Newspaper |
author |
Lane, T.P. Paasche, Øyvind Kvisvik, B. Adamson, K.R. Rodés, Á. Patton, Henry Gomez, N. Gheorghiu, D. Bakke, J. Hubbard, Alun Lloyd |
author_facet |
Lane, T.P. Paasche, Øyvind Kvisvik, B. Adamson, K.R. Rodés, Á. Patton, Henry Gomez, N. Gheorghiu, D. Bakke, J. Hubbard, Alun Lloyd |
author_sort |
Lane, T.P. |
title |
Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
title_short |
Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
title_full |
Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
title_fullStr |
Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
title_full_unstemmed |
Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation |
title_sort |
elevation changes of the fennoscandian ice sheet interior during the last deglaciation |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19026 https://doi.org/10.1029/2020GL088796 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Arctic Fennoscandian Ice Sheet |
genre_facet |
Arctic Fennoscandian Ice Sheet |
op_relation |
Geophysical Research Letters Norges forskningsråd: 223259 Norges forskningsråd: 200672 Norges forskningsråd: 275181 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/200672/Norway/Glaciations in the Barents Sea area// info:eu-repo/grantAgreement/RCN/INTPART/275181/Norway/Advanced Climate Education and Research// Lane, Paasche Ø, Kvisvik, Adamson K, Rodés, Patton H, Gomez, Gheorghiu D, Bakke J, Hubbard AL. Elevation changes of the Fennoscandian Ice Sheet interior during the last deglaciation. Geophysical Research Letters. 2020 FRIDAID 1816817 doi:10.1029/2020GL088796 0094-8276 1944-8007 https://hdl.handle.net/10037/19026 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1029/2020GL088796 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
14 |
_version_ |
1766301954606104576 |