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...
Published in: | Scientific Reports |
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Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group
2014
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Subjects: | |
Online Access: | https://doi.org/10.1038/srep04046 https://archimer.ifremer.fr/doc/00291/40189/38732.pdf https://archimer.ifremer.fr/doc/00291/40189/38733.doc |
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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