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首页> 外文期刊>Marine Chemistry >Deep water circulation and composition in the Arctic Ocean by dissolved barium,aluminium and silicate
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Deep water circulation and composition in the Arctic Ocean by dissolved barium,aluminium and silicate

机译：溶解的钡，铝和硅酸盐在北冰洋中的深水循环和成分

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摘要

As part of the ARK-XXII/2 Polarstern expedition in summer 2007, dissolved Ba was analyzed in the Eurasian Basins and the Makarov Basin including the Alpha and Mendeleyev Ridges as well as on the adjacent shelves. The data was compared with data of dissolved Al and Si from the same cruise. Superimposed on the gradual increase of concentration with depth by dissolution of the particle rain, we observe different flow patterns in intermediate waters along the track. In the Atlantic and Intermediate Depth Water (AIDW) in the Amundsen Basin the influence from Eurasian shelf water can be seen in slightly enhanced concentrations of dissolved Ba compared with Al and Si. At the same time Al concentrations decrease with distance from the Eurasian shelves. Source waters to the Atlantic Layer Water (ALW) in the Makarov Basin have the same background Ba concentrations as the Nansen AIDW. We describe the distributions of the elements in the Deep Eurasian and Bottom Water (DEBW) by deep shelf convection as well as diffusion from sediments controlling concentrations in the Nansen DEBW while in the Amundsen DEBW diffusion from sediments appears to be more important. In the Makarov Basin inflow from the Canadian Basin and overflow from the Amundsen Basin at 2000 m depth at the Lomonosov Ridge are required to explain the composition of bottom waters.
机译：作为2007年夏季进行的ARK-XXII / 2 Polarstern探险的一部分，对欧亚盆地和Makarov盆地（包括Alpha和Mendeleyev岭）以及相邻架子上的溶解Ba进行了分析。将数据与来自同一巡航的溶解的Al和Si的数据进行比较。通过颗粒雨的溶解，浓度随深度的逐渐增加叠加，我们观察到沿轨道在中间水域中的不同流动模式。在阿蒙森盆地的大西洋和中深度水（AIDW）中，与Al和Si相比，溶解的Ba浓度略有增加，可以看到欧亚大陆架水的影响。同时，铝的浓度随着与欧亚大陆架的距离的增加而降低。马卡罗夫盆地大西洋水源水（ALW）的背景Ba浓度与Nansen AIDW相同。我们通过深层对流以及南森DEBW中控制浓度的沉积物扩散来描述深欧亚和底水（DEBW）中元素的分布，而在Amundsen DEBW中，沉积物的扩散似乎更为重要。在马卡洛夫盆地，从加拿大盆地流入的水和从阿蒙森盆地在罗蒙诺索夫岭2000 m深度处的溢流需要解释底水的组成。

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  • 来源
    《Marine Chemistry》 |2012年第20期|p.56-67|共12页
  • 作者

    T. Roeske; M. Rutgers vd Loeff; R. Middag; K. Bakker;

  • 作者单位

    Alfred Wegener Institutfur Polar- und Meeresforschung (AW1), Germany;

    Alfred Wegener Institutfur Polar- und Meeresforschung (AW1), Germany;

    Royal Netherlands Institute for Sea Research (Royal NIOZ), The Netherlands,Department of Ocean Sciences & Institute of Marine Sciences, University of California Santa Cruz, CA 95064, USA;

    Royal Netherlands Institute for Sea Research (Royal NIOZ), The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    barium; arctic ocean; hydrography; regeneration; GEOTRACES;

    机译：钡;北冰洋;水文再生;地理轨迹;

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