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首页> 外文期刊>Oceanographic Literature Review >Sea surface temperature across the Subarctic North Pacific and marginal seas through the past 20,000 years: A paleoceanographic synthesis
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Sea surface temperature across the Subarctic North Pacific and marginal seas through the past 20,000 years: A paleoceanographic synthesis

机译：海面温度占象神北太平洋和边缘海域过去20,000年：古生食品合成

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摘要

Deglacial sea surface conditions in the subarctic North Pacific and marginal seas are the subject of increasing interest in pa-leoceanography. However, a cohesive picture of near-surface oceanography from which to compare inter and intra-regional variability through the last deglaciation is lacking. We present a synthesis of sea surface temperature covering the open North Pacific and its marginal seas, spanning the past 20 ka using proxy records from foraminiferal calcite (δ~(18)O and Mg/Ca) and cocco-lithophore alkenones (U_(37)~(k~')). Sea surface temperature proxies tend to be in agreement through the Holocene, though U_(37)~(k~') records are often interpreted as warmer than adjacent δ~(18)O or Mg/Ca records during the Last Glacial Maximum and early deglaciation. In the Sea of Okhotsk, Holocene discrepancies between δ~(18)O and U_(37)~(k~') may be the result of changes in near-surface stratification. We find that sea-surface warming occurred prior to the onset of the B0lling-Aller0d (14.7 ka) and coincident with the onset of the Holocene (11.7 ka) in much of the North Pacific and Bering Sea. Proxy records also show a cold reversal roughly synchronous with the Younger Dryas (12.9-11.7 ka). After the onset of the Holocene, the influence of an intensified warm Kuroshio Current is evident at higher latitudes in the Western Pacific, and an east-west seesaw in sea surface temperature, likely driven by changes in the strength of the North Pacific Gyre, characterizes the open interglacial North Pacific.
机译：象神北太平洋和边缘海洋中的细长海面状况是对PA-Leoceanography兴趣兴趣的主题。然而，缺乏通过最后扩大的近地区的近似海洋学的粘性图片，从中比较跨越的区域变异。我们介绍了覆盖开放的北太平洋及其边缘海洋的海面温度合成，跨越了过去20ka使用来自青胺切除盲岩的代理记录（δ〜（18）o和mg / ca）和Cocco-lithophore链烯酮（U_（37 ）〜（k〜'））。海面温度代理往往通过全新世倾向于一致，虽然U_（37）〜（k〜'）记录通常被解释为比最后冰川最大和早期冰川的相邻Δ〜（18）O或Mg / CA记录更温暖令人沮丧。在Okhotsk的海中，Δ〜（18）o和u_（37）〜（k〜'）之间的全新世差异可能是近表面分层变化的结果。我们发现在B0Lling-Aller0d（14.7ka）发作之前发生海面变暖，并在大部分北太平洋和白垩中的全新世（11.7 ka）的发作一致。代理记录还显示出与较年轻的Dryas（12.9-11.7 ka）同步的冷逆转。在全新世发作后，在西太平洋地区的更高纬度地区，加强温泉电流的影响力在海面温度的高纬度下，可能受到北太平洋的强度的变化所表征的影响开放式中间北太平洋。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2156-2157|共2页
  • 作者

    C.V. Davis; S.E. Myhre; C. Deutsch;

  • 作者单位

    School of Earth Oceans And the Environment University of South Carolina 701 Sumter St Columbia SC United States;

    School of Earth Oceans And the Environment University of South Carolina 701 Sumter St Columbia SC United States;

    School of Earth Oceans And the Environment University of South Carolina 701 Sumter St Columbia SC United States;

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