Measured and smoothed sortable silt record of sediment core GS06-144-09MC-D

Changes in the Atlantic Meridional Overturning Circulation (AMOC) have commonly been invoked to explain the low‐frequency climate changes evident over millennial‐multidecadal timescales during the Holocene period. While there is growing evidence that deep ocean circulation varied on millennial times...

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Bibliographic Details
Main Authors: Mjell, Tor Lien, Ninnemann, Ulysses S, Kleiven, Helga F, Hall, Ian R
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
Age
AMOC
AMV
Beckman Coulter Multisizer III
DEPTH
sediment/rock
GS06-144-09MC-D
ISOW
MUC
MultiCorer
NAO
smoothed
sortable silt
Sortable-silt mean size
average
Coulter
Iceland
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.899459
https://doi.org/10.1594/PANGAEA.899459
Description
Summary:Changes in the Atlantic Meridional Overturning Circulation (AMOC) have commonly been invoked to explain the low‐frequency climate changes evident over millennial‐multidecadal timescales during the Holocene period. While there is growing evidence that deep ocean circulation varied on millennial timescales, little is known about ocean variability on shorter timescales. Here we use a marine sediment core (GS06‐144‐09MC‐D) recovered from a high accumulation rate site on the Gardar Drift in the Iceland Basin (60°19′N, 23°58′W, 2081 m) to reconstruct decadal‐centennial variability in the vigor of Iceland‐Scotland Overflow Water (ISOW) with the paleocurrent proxy "sortable silt" mean grain size (ss). Our (ss) record reveals that changes in ISOW vigor have occurred on multidecadal‐centennial timescales over the past ~600 years; similar timescales as documented in Atlantic Multidecadal Variability observations and reconstructions. Our findings support a link between changes in basin‐wide climate and deep ocean circulation.

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