Carbon and oxygen stable isotopes measured on benthic foraminifera from IODP Site 323-U1343

High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records with which to assess this mechanism. In this study we...

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Bibliographic Details
Main Author: Worne, Savannah
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
323-U1343A
323-U1343C
323-U1343E
AGE
Bering Sea
Bering Sea Paleoceanography
Cassidulina parkerianus
δ13C
δ18O
Cassidulina teretis
CO2
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP/ODP/IODP sample designation
Elphidium batialis
Event label
Exp323
Glacial
Globobulimina auriculata
Globobulimina pacifica
Integrated Ocean Drilling Program / International Ocean Discovery Program
IODP
Islandiella norcrossi
Joides Resolution
Nonionella labradorica
Nonionella spp.
Pacific
Subarctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.906181
https://doi.org/10.1594/PANGAEA.906181
Description
Summary:High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records with which to assess this mechanism. In this study we present a new high-resolution multi-species benthic foraminiferal oxygen isotope record for an improved age model and produce the first assessment of the influence of glacial North Pacific Intermediate Water (GNPIW) at 2 km water depth in the Bering Sea. From this, we discuss the extent to which oceanographic changes in Bering Sea upwelling and GNPIW production may have contributed towards deep water upwelling and glacial-interglacial pCO2 changes in the subarctic Pacific over the last 850, 000 years.

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