Linkages between ocean circulation and the Northeast Greenland Ice Stream in the Early Holocene ...

The melting of marine terminating glaciers in Northeast Greenland is a visible sign that our climate is changing. This melt has been partly attributed to changes in oceanic heat fluxes, particularly warming of Atlantic Water (AW). Yet our understanding of the interaction between glaciers and the oce...

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Bibliographic Details
Published in:Science of The Total Environment
Main Authors: Davies, Joanna, Møller Mathiasen, Anders, Kristiansen, Kristiane, Hansen, Katrine Elnegaard, Wacker, Lukas, Alstrup, Aage Kristian Olsen, Munk, Ole Lajord, Pearce, Christof, Seidenkrantz, Marit-Solveig
Format: Article in Journal/Newspaper
Language:English
Published: ETH Zurich 2022
Subjects:
Holocene
Paleoceanography
Greenland
Micropaleontology
Foraminifera
Sedimentology-marine cores
Ice Shelf
Online Access:https://dx.doi.org/10.3929/ethz-b-000547745
http://hdl.handle.net/20.500.11850/547745
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Summary:The melting of marine terminating glaciers in Northeast Greenland is a visible sign that our climate is changing. This melt has been partly attributed to changes in oceanic heat fluxes, particularly warming of Atlantic Water (AW). Yet our understanding of the interaction between glaciers and the ocean is limited by the length of instrumental records. Here, we present a multi-proxy study (benthic foraminifera assemblages, CT scans, grain size, XRF, and stable isotope data) on core DA17-NG-ST08-092G, located 90 km east of the Northeast Greenland Ice Stream (NEGIS). Whilst the exact timing of deglaciation is uncertain, it is certain to have occurred at least as early as 12.5 ka cal BP, and likely before 13.4 ka cal BP. The inflow of AW may have played a role in the seemingly early deglaciation on the Northeast Greenland continental shelf. Following deglaciation, the site was overlain by an ice shelf, with AW and Polar Water (PW) flowing beneath until 11.2 ka cal BP. The NEGIS briefly retreated westwards between ... : Quaternary Science Reviews, 286 ...

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