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

Show full item record



Permalink

http://hdl.handle.net/10138/228372

Citation

Oksman , M , Weckstrom , K , Miettinen , A , Juggins , S , Divine , D V , Jackson , R , Telford , R , Korsgaard , N J & Kucera , M 2017 , ' Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay ' , Nature Communications , vol. 8 , 1017 . https://doi.org/10.1038/s41467-017-01155-6

Title: Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay
Author: Oksman, Mimmi; Weckstrom, Kaarina; Miettinen, Arto; Juggins, Stephen; Divine, Dmitry V.; Jackson, Rebecca; Telford, Richard; Korsgaard, Niels J.; Kucera, Michal
Contributor: University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Environmental Sciences
University of Helsinki, Norwegian Polar Institute, Fram Centre, Tromsø
Date: 2017-10-18
Language: eng
Number of pages: 9
Belongs to series: Nature Communications
ISSN: 2041-1723
URI: http://hdl.handle.net/10138/228372
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.
Subject: ABRUPT CLIMATE-CHANGE
LAST GLACIAL CYCLE
WEST GREENLAND
JAKOBSHAVN ISBRAE
FRESH-WATER
SOUTHEAST GREENLAND
HOLOCENE CLIMATE
OUTLET GLACIERS
NORTH-ATLANTIC
NORWEGIAN SEA
114 Physical sciences
1172 Environmental sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
s41467_017_01155_6.pdf 1.854Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record