Benthic foraminiferal abundances from eastern Baffin Bay, sediment core AMD14-204C ...

Baffin Bay is a semi-enclosed basin connecting the Arctic Ocean and the western North Atlantic, thus making out a significant pathway for heat exchange. Here we reconstruct the alternating advection of relatively warmer and saline Atlantic waters versus the incursion of colder Arctic water masses en...

Full description

Bibliographic Details
Main Authors: Hansen, Katrine Elnegaard, Giraudeau, Jacques, Wacker, Lukas, Pearce, Christof, Seidenkrantz, Marit-Solveig
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
AMD14-204C
Baffin Bay
Benthic foraminifera
Holocene
DEPTH, sediment/rock
AGE
Cassidulina neoteretis
Islandiella norcrossi
Cassidulina reniforme
Bolivina pseudopunctata
Stainforthia feylingi
Astrononion gallowayi
Buliminella elegantissima
Elphidium clavatum
Epistominella arctica
Epistominella vitrea
Nonionellina labradorica
Ratio
Foraminifera, benthic
Foraminifera, planktic
Portatrochammina bipolaris
Psammosphaera fusca
Recurvoides trochamminiformis
Reophax subfusiformis
Textularia kattegatensis
Textularia torquata
Textularia earlandi
Foraminifera, benthic calcareous
Foraminifera, benthic agglutinated
Foraminifera, benthic atlantic species
Foraminifera, sea-ice species
Calypso square corer
AMD14_1b
CCGS Amundsen
Arctic
Arctic Ocean
Canadian Arctic Archipelago
Greenland
Nares
Arctic Archipelago
Baffin
Foraminifera*
Nares strait
North Atlantic
Sea ice
Upernavik
Online Access:https://dx.doi.org/10.1594/pangaea.920240
https://doi.pangaea.de/10.1594/PANGAEA.920240
Description
Summary:Baffin Bay is a semi-enclosed basin connecting the Arctic Ocean and the western North Atlantic, thus making out a significant pathway for heat exchange. Here we reconstruct the alternating advection of relatively warmer and saline Atlantic waters versus the incursion of colder Arctic water masses entering Baffin Bay through the multiple gateways in the Canadian Arctic Archipelago and the Nares Strait during the Holocene. We carried out benthic foraminiferal assemblage analyses, X-ray fluorescence scanning, and radiocarbon dating of a 738 cm long marine sediment core retrieved from eastern Baffin Bay near Upernavik, Greenland (Core AMD14-204C; 987m water depth). Results reveal that eastern Baffin Bay was subjected to several oceanographic changes during the last 9.2 kyrCE1. Waning deglacial conditions with enhanced meltwater influxes and an extensive sea-ice cover prevailed in eastern Baffin Bay from 9.2 to 7.9 ka. A transition towards bottom water amelioration is recorded at 7.9 ka by increased advection of ...

Similar Items