Journal
CHINA OCEAN ENGINEERING
Volume 33, Issue 1, Pages 73-85Publisher
CHINA OCEAN PRESS
DOI: 10.1007/s13344-019-0008-6
Keywords
trace metal; sediments; sedimentation; radionuclides; numerical model; residual current
Funding
- Key Program of Tianjin Natural Science Foundation [16JCZDJC39400]
- National Key Research and Development Program of China [2016YFC0502204]
- National Natural Science Foundation of China [21501042]
- China Scholarship Council
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This study shows that there are two regions with high trace metal concentrations in the Bohai Bay, China. The numerical hydrodynamic model coupled with geochemical analysis was applied to understand the mass transport and sedimentation in the bay. The modeling results show that the two regions are located within the residual current vortexes. Results from the particle-tracking model indicate that the trace metals released from the land sources enter the regions and take a relatively long residence time in the vortexes. The sediment radionuclide data indicates that the two regions experienced continuous and high sedimentation, and trace metals are prone to deposit in the regions. The correlations among trace metals, residual currents and radionuclides data suggest that the tides are the governing factor controlling the distributions of the trace metals in the bay. The consistence among these results also supports the reliabilities of the numerical simulation results of water and trace metal transport in this study.
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