Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings
The climate of the last glaciation was interrupted by numerous abrupt temperature fluctuations, referred to as Greenland interstadials and stadials. During warm interstadials the meridional overturning circulation was active transferring heat to the north, whereas during cold stadials the Nordic Sea...
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Online Access: | https://hdl.handle.net/10037/12104 https://doi.org/10.1038/ncomms3849 |
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ftunivtroemsoe:oai:munin.uit.no:10037/12104 2023-05-15T14:22:27+02:00 Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings Rasmussen, Tine Lander Thomsen, Erik 2013-11-22 https://hdl.handle.net/10037/12104 https://doi.org/10.1038/ncomms3849 eng eng Nature Publishing Group Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE Rasmussen, T.L.R., Thomsen, E. Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings. Nature Communications. 2013;4 FRIDAID 1068481 doi:10.1038/ncomms3849 2041-1723 https://hdl.handle.net/10037/12104 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Journal article Tidsskriftartikkel Peer reviewed 2013 ftunivtroemsoe https://doi.org/10.1038/ncomms3849 2021-06-25T17:55:48Z The climate of the last glaciation was interrupted by numerous abrupt temperature fluctuations, referred to as Greenland interstadials and stadials. During warm interstadials the meridional overturning circulation was active transferring heat to the north, whereas during cold stadials the Nordic Seas were ice-covered and the overturning circulation was disrupted. Meltwater discharge, from ice sheets surrounding the Nordic Seas, is implicated as a cause of this ocean instability, yet very little is known regarding this proposed discharge during warmings. Here we show that, during warmings, pink clay from Devonian Red Beds is transported in suspension by meltwater from the surrounding ice sheet and replaces the greenish silt that is normally deposited on the north-western slope of Svalbard during interstadials. The magnitude of the outpourings is comparable to the size of the outbursts during the deglaciation. Decreasing concentrations of ice-rafted debris during the interstadials signify that the ice sheet retreats as the meltwater production increases. Article in Journal/Newspaper Arctic Arctic Greenland Ice Sheet Nordic Seas Svalbard University of Tromsø: Munin Open Research Archive Arctic Greenland Svalbard Nature Communications 4 1 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Rasmussen, Tine Lander Thomsen, Erik Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
description |
The climate of the last glaciation was interrupted by numerous abrupt temperature fluctuations, referred to as Greenland interstadials and stadials. During warm interstadials the meridional overturning circulation was active transferring heat to the north, whereas during cold stadials the Nordic Seas were ice-covered and the overturning circulation was disrupted. Meltwater discharge, from ice sheets surrounding the Nordic Seas, is implicated as a cause of this ocean instability, yet very little is known regarding this proposed discharge during warmings. Here we show that, during warmings, pink clay from Devonian Red Beds is transported in suspension by meltwater from the surrounding ice sheet and replaces the greenish silt that is normally deposited on the north-western slope of Svalbard during interstadials. The magnitude of the outpourings is comparable to the size of the outbursts during the deglaciation. Decreasing concentrations of ice-rafted debris during the interstadials signify that the ice sheet retreats as the meltwater production increases. |
format |
Article in Journal/Newspaper |
author |
Rasmussen, Tine Lander Thomsen, Erik |
author_facet |
Rasmussen, Tine Lander Thomsen, Erik |
author_sort |
Rasmussen, Tine Lander |
title |
Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
title_short |
Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
title_full |
Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
title_fullStr |
Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
title_full_unstemmed |
Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings |
title_sort |
pink marine sediments reveal rapid ice melt and arctic meltwater discharge during dansgaard-oeschger warmings |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://hdl.handle.net/10037/12104 https://doi.org/10.1038/ncomms3849 |
geographic |
Arctic Greenland Svalbard |
geographic_facet |
Arctic Greenland Svalbard |
genre |
Arctic Arctic Greenland Ice Sheet Nordic Seas Svalbard |
genre_facet |
Arctic Arctic Greenland Ice Sheet Nordic Seas Svalbard |
op_relation |
Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE Rasmussen, T.L.R., Thomsen, E. Pink marine sediments reveal rapid ice melt and Arctic meltwater discharge during Dansgaard-Oeschger warmings. Nature Communications. 2013;4 FRIDAID 1068481 doi:10.1038/ncomms3849 2041-1723 https://hdl.handle.net/10037/12104 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/ncomms3849 |
container_title |
Nature Communications |
container_volume |
4 |
container_issue |
1 |
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1766295034924105728 |