The influence of ice marginal setting on early Holocene retreat rates in central West Greenland
Ice sheet reconstructions from diverse ice margin settings, spanning multiple millennia, are needed to assess the reaction of the Greenland Ice Sheet (GrIS) to millennial-scale climatic forcing and to place historical records in a longer-term context. Here we present 18 new cosmogenic 10Be exposure...
Published in: | Journal of Quaternary Science |
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Online Access: | http://www.osti.gov/servlets/purl/1809155 https://www.osti.gov/biblio/1809155 https://doi.org/10.1002/jqs.2778 |
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ftosti:oai:osti.gov:1809155 2023-07-30T04:03:10+02:00 The influence of ice marginal setting on early Holocene retreat rates in central West Greenland Kelley, Samuel E. Briner, Jason P. Zimmerman, Susan H. 2022-10-07 application/pdf http://www.osti.gov/servlets/purl/1809155 https://www.osti.gov/biblio/1809155 https://doi.org/10.1002/jqs.2778 unknown http://www.osti.gov/servlets/purl/1809155 https://www.osti.gov/biblio/1809155 https://doi.org/10.1002/jqs.2778 doi:10.1002/jqs.2778 58 GEOSCIENCES 2022 ftosti https://doi.org/10.1002/jqs.2778 2023-07-11T10:05:35Z Ice sheet reconstructions from diverse ice margin settings, spanning multiple millennia, are needed to assess the reaction of the Greenland Ice Sheet (GrIS) to millennial-scale climatic forcing and to place historical records in a longer-term context. Here we present 18 new cosmogenic 10Be exposure ages and five new radiocarbon ages that constrain the early Holocene retreat of the GrIS in the Disko Bugt region in both a marine and a land-based setting. Results indicate similar rates of early Holocene retreat of ~ 40–50 m a -1 from transects in Torsukattak fjord (marine setting) and the Naternaq area (land-based setting). We compile seven previously published chronologies of deglaciation from West Greenland, which yield early Holocene retreat rates ranging from 10 to 65 m a -1 , similar to those determined for our two study areas. This work demonstrates that when averaged on millennial timescales, retreat rates were remarkably similar along the western GrIS margin. Furthermore, the retreat rates calculated here demonstrate that terrestrial sectors of ice sheets can retreat at net rates comparable to their marine counterparts. Other/Unknown Material Disko bugt Greenland Ice Sheet SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Greenland Naternaq ENVELOPE(-51.883,-51.883,68.333,68.333) Torsukattak ENVELOPE(-55.000,-55.000,72.567,72.567) Journal of Quaternary Science 30 3 271 280 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
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58 GEOSCIENCES |
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58 GEOSCIENCES Kelley, Samuel E. Briner, Jason P. Zimmerman, Susan H. The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
topic_facet |
58 GEOSCIENCES |
description |
Ice sheet reconstructions from diverse ice margin settings, spanning multiple millennia, are needed to assess the reaction of the Greenland Ice Sheet (GrIS) to millennial-scale climatic forcing and to place historical records in a longer-term context. Here we present 18 new cosmogenic 10Be exposure ages and five new radiocarbon ages that constrain the early Holocene retreat of the GrIS in the Disko Bugt region in both a marine and a land-based setting. Results indicate similar rates of early Holocene retreat of ~ 40–50 m a -1 from transects in Torsukattak fjord (marine setting) and the Naternaq area (land-based setting). We compile seven previously published chronologies of deglaciation from West Greenland, which yield early Holocene retreat rates ranging from 10 to 65 m a -1 , similar to those determined for our two study areas. This work demonstrates that when averaged on millennial timescales, retreat rates were remarkably similar along the western GrIS margin. Furthermore, the retreat rates calculated here demonstrate that terrestrial sectors of ice sheets can retreat at net rates comparable to their marine counterparts. |
author |
Kelley, Samuel E. Briner, Jason P. Zimmerman, Susan H. |
author_facet |
Kelley, Samuel E. Briner, Jason P. Zimmerman, Susan H. |
author_sort |
Kelley, Samuel E. |
title |
The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
title_short |
The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
title_full |
The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
title_fullStr |
The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
title_full_unstemmed |
The influence of ice marginal setting on early Holocene retreat rates in central West Greenland |
title_sort |
influence of ice marginal setting on early holocene retreat rates in central west greenland |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1809155 https://www.osti.gov/biblio/1809155 https://doi.org/10.1002/jqs.2778 |
long_lat |
ENVELOPE(-51.883,-51.883,68.333,68.333) ENVELOPE(-55.000,-55.000,72.567,72.567) |
geographic |
Greenland Naternaq Torsukattak |
geographic_facet |
Greenland Naternaq Torsukattak |
genre |
Disko bugt Greenland Ice Sheet |
genre_facet |
Disko bugt Greenland Ice Sheet |
op_relation |
http://www.osti.gov/servlets/purl/1809155 https://www.osti.gov/biblio/1809155 https://doi.org/10.1002/jqs.2778 doi:10.1002/jqs.2778 |
op_doi |
https://doi.org/10.1002/jqs.2778 |
container_title |
Journal of Quaternary Science |
container_volume |
30 |
container_issue |
3 |
container_start_page |
271 |
op_container_end_page |
280 |
_version_ |
1772814115571499008 |