A Southern Ocean trigger for Northwest Pacific ventilation during the Holocene?

Holocene ocean circulation is poorly understood due to sparsity of dateable marine archives with submillennial-scale resolution. Here we present a record of mid-depth water radiocarbon contents in the Northwest (NW) Pacific Ocean over the last 12.000 years, which shows remarkable millennial-scale va...

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Bibliographic Details
Published in:Scientific Reports
Main Authors: Rella, S. F., Uchida, M.
Format: Text
Language:English
Published: Nature Publishing Group 2014
Subjects:
Article
Pacific
Southern Ocean
North Atlantic
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4027855
http://www.ncbi.nlm.nih.gov/pubmed/24509792
https://doi.org/10.1038/srep04046
Description
Summary:Holocene ocean circulation is poorly understood due to sparsity of dateable marine archives with submillennial-scale resolution. Here we present a record of mid-depth water radiocarbon contents in the Northwest (NW) Pacific Ocean over the last 12.000 years, which shows remarkable millennial-scale variations relative to changes in atmospheric radiocarbon inventory. Apparent decoupling of these variations from regional ventilation and mixing processes leads us to the suggestion that the mid-depth NW Pacific may have responded to changes in Southern Ocean overturning forced by latitudinal displacements of the southern westerly winds. By inference, a tendency of in-phase related North Atlantic and Southern Ocean overturning would argue against the development of a steady bipolar seesaw regime during the Holocene.

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