Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay

Oksman, Mimmi; Weckström, Kaarina; Miettinen, Arto; Juggins, Stephen; Divine, Dmitry V.; Jackson, Rebecca; Telford, Richard; Korsgaard, Niels Jakup; Kucera, Michal

Opin vísindi
→
Háskóli Íslands
→
Greinar- HÍ
→
Skoða verk

dc.contributor	Háskóli Íslands
dc.contributor	University of Iceland
dc.contributor.author	Oksman, Mimmi
dc.contributor.author	Weckström, Kaarina
dc.contributor.author	Miettinen, Arto
dc.contributor.author	Juggins, Stephen
dc.contributor.author	Divine, Dmitry V.
dc.contributor.author	Jackson, Rebecca
dc.contributor.author	Telford, Richard
dc.contributor.author	Korsgaard, Niels Jakup
dc.contributor.author	Kucera, Michal
dc.date.accessioned	2018-01-22T14:01:08Z
dc.date.available	2018-01-22T14:01:08Z
dc.date.issued	2017-10-18
dc.identifier.citation	Oksman, M., Weckström, K., Miettinen, A., Juggins, S., Divine, D. V., Jackson, R., . . . Kucera, M. (2017). Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay. Nature Communications, 8(1), 1017. doi:10.1038/s41467-017-01155-6
dc.identifier.issn	2041-1723
dc.identifier.uri	https://hdl.handle.net/20.500.11815/528
dc.description.abstract	The transition from the last ice age to the present-day interglacial was interrupted by the Younger Dryas (YD) cold period. While many studies exist on this climate event, only few include high-resolution marine records that span the YD. In order to better understand the interactions between ocean, atmosphere and ice sheet stability during the YD, more high-resolution proxy records from the Arctic, located proximal to ice sheet outlet glaciers, are required. Here we present the first diatom-based high-resolution quantitative reconstruction of sea surface conditions from central-eastern Baffin Bay, covering the period 14.0–10.2 kyr BP. Our record reveals warmer sea surface conditions and strong interactions between the ocean and the West Greenland ice margin during the YD. These warmer conditions were caused by increased Atlantic-sourced water inflow combined with amplified seasonality. Our results emphasize the importance of the ocean for ice sheet stability under the current changing climate.
dc.description.sponsorship	We would like thank the captain and all members of the cruise MSM09/2. We also thank O. Hyttinen, University of Helsinki, for her help with grain size distribution analysis. Funding from the Finnish Graduate School in Geology is kindly acknowledged as is the funding from the Academy of Finland (A.E.K. Ojala, QUAL-project 259343). We are grateful to F.M. Nick, H. Machguth, T. Luoto, and K. Pauli for insightful discussions.
dc.format.extent	1017
dc.language.iso	en
dc.publisher	Springer Nature
dc.relation.ispartofseries	Nature Communications;8(1)
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Palaeoceanography
dc.subject	Palaeoclimate
dc.subject	Haffræði
dc.subject	Loftslagsfræði
dc.subject	Ísöld
dc.title	Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay
dc.type	info:eu-repo/semantics/article
dcterms.license	This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.description.version	Peer Reviewed
dc.identifier.journal	Nature Communications
dc.identifier.doi	10.1038/s41467-017-01155-6
dc.contributor.department	Jarðvísindastofnun (HÍ)
dc.contributor.department	Institute of Earth Sciences (UI)
dc.contributor.school	Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school	School of Engineering and Natural Sciences (UI)