A Southern Ocean trigger for Northwest Pacific ventilation during the Holocene?
A Southern Ocean trigger for Northwest Pacific ventilation during the Holocene?
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DOI:
10.1038/srep04046
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发表时间:
2014-02-17
影响因子:
4.6
通讯作者:
Uchida M
中科院分区:
文献类型:
--
作者:
Rella SF;Uchida M
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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