期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：242
期号：5
页码：1-7
DOI：10.1088/1755-1315/242/5/052015
出版社：IOP Publishing
摘要：Using investigation on Mercury (Hg) in May and August 1990, this paper analyzed the horizontal and vertical migration changes of Hg contents, and quantified the horizontal loss, vertical dilution and vertical accumulation amounts. Results showed that the absolute horizontal loss amount and relative horizontal loss amount were 0.002-0.015 μg L−1 and 3.63-15.87%, respectively. The absolute dilution amount and relative dilution amount were 0.000-0.005 μg L−1 and 0.00-2.57%, compared to absolute accumulation amount and relative accumulation amount of 0.008 μg L−1 and 12.69%, respectively. Once Hg was transporting through the bay, there were small horizontal losses in both surface and bottom waters. The horizontal loss in bottom waters would be small/big in case of the horizontal loss in surface waters was small/big. No matter Hg contents in waters were relative high or relative low, the sediment of Hg from surface waters to bottom waters was very rapid, and the vertical loss during the vertical migration process was very small, resulting in almost all of the Hg was moving to the sea bottom. Finally, this paper provided Yang's dynamic vertical balance theory to reveal the vertical migration process of substance in marine bay.
