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Intensification of the Northeast Pacific oxygen minimum zone during the Bölling-Alleröd warm period

Paleoceanography

By:
, , , , and
DOI: 10.1029/1999PA000473

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Abstract

Although climate records from several locations around the world show nearly synchronous and abrupt changes, the nature of the inferred teleconnection is still poorly understood. On the basis of preserved laminations and molybdenum enrichments in open margin sediments we demonstrate that the oxygen content of northeast Pacific waters at 800 m depth during the Bölling-Alleröd warm period (15–13 kyr) was greatly reduced. Existing oxygen isotopic records of benthic and planktonic foraminifera suggest that this was probably due to suppressed ventilation at higher latitudes of the North Pacific. Comparison with ventilation records for the North Atlantic indicates an antiphased pattern of convection relative to the North Pacific over the past 22 kyr, perhaps due to variations in water vapor transport across Central America.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Intensification of the Northeast Pacific oxygen minimum zone during the Bölling-Alleröd warm period
Series title:
Paleoceanography
DOI:
10.1029/1999PA000473
Volume
15
Issue:
5
Year Published:
2000
Language:
English
Publisher:
Wiley
Description:
9 p.
First page:
528
Last page:
536
Online Only (Y/N):
N
Additional Online Files(Y/N):
N