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首页> 外文期刊>Oceanographic Literature Review >Distribution of atmospheric gaseous elemental mercury (Hg(0)) from the Sea of Japan to the Arctic, and Hg(0) evasion fluxes in the Eastern Arctic Seas: Results from a joint Russian-Chinese cruise in fall 2018
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Distribution of atmospheric gaseous elemental mercury (Hg(0)) from the Sea of Japan to the Arctic, and Hg(0) evasion fluxes in the Eastern Arctic Seas: Results from a joint Russian-Chinese cruise in fall 2018

机译：从日本海域到北极海洋的大气气态汞（Hg（0））分布，以及东北北极海域的HG（0）逃避助势：2018年秋季的联合俄文 - 中国巡航结果

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摘要

The Eastern Arctic Seas and the north-western Pacific are among the most poorly investigated areas as far as Hg cycling in marine systems is concerned. Continuous measurements of gaseous elemental mercury (Hg(0)) concentrations in the marine boundary layer and Hg(0) evasion fluxes from the sea surface were performed in these regions in fall 2018. Atmospheric Hg(0) concentrations of 1.02-2.50 ng/m~3 were measured (average: 1.45 + 0.12 ng/m~3; N = 2518). Values in the Far Eastern Seas of Russia were lower compared to previous observations, presumably reflecting global trend of decreasing atmospheric Hg(0). Concentration-weighted trajectory analysis highlighted three source regions influencing Hg(0) concentrations in the ambient air during the cruise: 1) the north-eastern China and the Yellow Sea region; 2) the Kuril-Kamchatka region of the Pacific Ocean and the region around the Commander and Aleutian Islands; and 3) the Arctic region. In the Arctic, sea-air Hg(0) evasion fluxes were at the same low levels as those observed earlier in the northern sea areas (0.28-1.35 ng/m2/h, average, 0.70 + 0.26 ng/m~2/h, N = 29). In the Eastern Arctic Seas, Hg(0) evasion fluxes were significantly dependent on river runoff. In the Arctic Ocean, they were negatively correlated with water temperature and positively correlated with salinity, suggesting a proximity to areas with contiguous ice and higher dissolved Hg(0) concentrations in the surface seawater. These findings are consistent with the hypothesis that the Arctic Ocean is a source of atmospheric Hg(0) during late summer and fall.
机译：北极海和西北太平洋是最糟糕的调查领域，只要海洋系统循环循环。在2018年秋季的这些地区进行海洋边界层和Hg（0）浓度的气态元素汞（Hg（0））浓度的连续测量。大气Hg（0）浓度为1.02-2.50 ng /测量m〜3（平均：1.45 + 0.12ng / m〜3; n = 2518）。与以前的观察结果相比，俄罗斯远东海洋的价值观较低，可能反映了大气下降的全球趋势（0）。浓缩加权轨迹分析突出了三个源区，影响巡航期间环境空气中的HG（0）浓度：1）东北部和黄海地区; 2）太平洋Kuril-kamchatka地区和指挥官和阿列丁群岛周围的地区; 3）北极地区。在北极，海风HG（0）逃避助熔剂与北海地区前面观察到的较低水平相同（0.28-1.35 ng / m 2 / h，平均，0.70 + 0.26ng / m〜2 / h ，n = 29）。在东北北极海域，HG（0）逃避助势显着依赖于河流径。在北冰洋中，它们与水温呈负相关，并与盐度正相关，表明在表面海水中邻近具有邻接冰和更高的溶解的Hg（0）浓度的区域。这些发现与北极海洋是夏季和秋季的大气HG（0）的来源一致。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2127-2127|共1页
  • 作者

    V.V. Kalinchuk; E.A. Lopatnikov; A.S. Astakhov;

  • 作者单位

    V.I.IPichev Pacific Oceanological Institute of Far Eastern Branch of Russian Academy of Sciences Vladivostok 690041 Russian Federation;

    V.I.IPichev Pacific Oceanological Institute of Far Eastern Branch of Russian Academy of Sciences Vladivostok 690041 Russian Federation;

    V.I.IPichev Pacific Oceanological Institute of Far Eastern Branch of Russian Academy of Sciences Vladivostok 690041 Russian Federation;

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