Laboratory for Ocean & Coast Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
Laboratory for Ocean & Coast Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
Mar Pollut Bull. 2018 Apr;129(2):534-544. doi: 10.1016/j.marpolbul.2017.10.027. Epub 2017 Nov 3.
Based on concentrations and distributions of heavy metals, grain size and loss on ignition (LOI) in the seafloor sediments acquired during three surveys in winter and in summer (before and after typhoon Morakot) in the mud deposition center off the Fujian-Zhejiang coast, East China Sea, the seasonal and typhoon-induced variations of heavy metals in seafloor sediments are discussed. It is found that different concentrations of heavy metals occurred in seafloor sediments, but their distribution patterns were similar, gradually decreasing from near-shore to offshore. The distribution of heavy metals was correlated with grain size and LOI in seafloor sediments, which showed significant seasonal variations and typhoon's impact. Based on these results, a conceptual evolution model was built about the seasonal and typhoon's impact on the deposition environment of heavy metals, which has implications for understanding the migration, settling, and burial processes of heavy metals in the sea.
基于东海福建-浙江沿岸泥质沉积区冬、夏两季（莫拉克台风前后）三次调查中采集的海底沉积物中重金属的浓度和分布、粒度和烧失量（LOI），讨论了重金属在海底沉积物中的季节性和台风诱导变化。结果发现，海底沉积物中存在不同浓度的重金属，但它们的分布模式相似，从近岸到近海逐渐减少。重金属的分布与海底沉积物的粒度和 LOI 相关，它们表现出显著的季节性变化和台风的影响。基于这些结果，建立了一个关于季节性和台风对重金属沉积环境影响的概念演化模型，这对于理解重金属在海洋中的迁移、沉降和埋藏过程具有重要意义。
