A preliminary study on fingerprinting approach in marine sediment dynamics with the rare earth elements

doi:10.1007/s13131-010-0051-x

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	A preliminary study on fingerprinting approach in marine sediment dynamics with the rare earth elements
	Zhou Xiaojing 1,2; Li Anchun 1; Jiang Fuqing 1; Meng Qingyong 1,2
刊名	ACTA OCEANOLOGICA SINICA
	2010-07-01
卷号	29 期号:4 页码:62-77
关键词	Rare Earth Elements Fingerprints East China Sea Shelf Sediment Transport
ISSN号	0253-505X
DOI	10.1007/s13131-010-0051-x
文献子类	Article
英文摘要	Locating the quantitized natural sediment fingerprints is an important work for marine sediment dynamics study. The total of 146 sediment samples were collected from the Shelf of the East China Sea and five rivers, including Huanghe (Yellow), Changjiang (Yangtze), Qiantang, Ou and Min River. The sediment grain size and the contents of rare earth elements (REEs) were measured with laser particle size analyzer and ICP-MS technology. The results show that absolute REE content (Sigma REE) and the concentration ratio of light REEs to heavy REEs (L/HREE) are different in the sediments among those rivers. There are higher REE contents in being less than 2 m and 2-31 mu m fractions in the Changjiang Estuary surface sediments. The REE contents of bulk sediment are dominated by the corresponding values of those leading size-fractions. Sigma REE of sediment is higher close to the estuaries and declines seaward on the inner shelf of the East China Sea (ECS). The L/HREE ratio has a tendency of increase southward from 28 degrees N. Hydrodynamic conditions plays a predominate role on spacial distributions of the surficial sediment's REE parameters. In some situations, the currents tend to remove the coarser light grains from initial populations, as well as the deposit of the finer heavy mineral grains. In other situations, the currents will change the ratio of sediment constituents, such as ratio between silts and clays in the sediments. As a result, the various values of Sigma REE or L/HREE ratio in different bulk sediments are more affected by the change of size-fractions than source location. Under the long-term stable hydrodynamic environment, i.e., the East China Sea Shelf, new sediment transport model based on the size and density gradation concept may help to understand the spatial distribution patterns of REE parameters.; Locating the quantitized natural sediment fingerprints is an important work for marine sediment dynamics study. The total of 146 sediment samples were collected from the Shelf of the East China Sea and five rivers, including Huanghe (Yellow), Changjiang (Yangtze), Qiantang, Ou and Min River. The sediment grain size and the contents of rare earth elements (REEs) were measured with laser particle size analyzer and ICP-MS technology. The results show that absolute REE content (Sigma REE) and the concentration ratio of light REEs to heavy REEs (L/HREE) are different in the sediments among those rivers. There are higher REE contents in being less than 2 m and 2-31 mu m fractions in the Changjiang Estuary surface sediments. The REE contents of bulk sediment are dominated by the corresponding values of those leading size-fractions. Sigma REE of sediment is higher close to the estuaries and declines seaward on the inner shelf of the East China Sea (ECS). The L/HREE ratio has a tendency of increase southward from 28 degrees N. Hydrodynamic conditions plays a predominate role on spacial distributions of the surficial sediment's REE parameters. In some situations, the currents tend to remove the coarser light grains from initial populations, as well as the deposit of the finer heavy mineral grains. In other situations, the currents will change the ratio of sediment constituents, such as ratio between silts and clays in the sediments. As a result, the various values of Sigma REE or L/HREE ratio in different bulk sediments are more affected by the change of size-fractions than source location. Under the long-term stable hydrodynamic environment, i.e., the East China Sea Shelf, new sediment transport model based on the size and density gradation concept may help to understand the spatial distribution patterns of REE parameters.
学科主题	Oceanography
URL标识	查看原文
语种	英语
WOS记录号	WOS:000282285900008
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5101]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhou Xiaojing,Li Anchun,Jiang Fuqing,et al. A preliminary study on fingerprinting approach in marine sediment dynamics with the rare earth elements[J]. ACTA OCEANOLOGICA SINICA,2010,29(4):62-77.
APA	Zhou Xiaojing,Li Anchun,Jiang Fuqing,&Meng Qingyong.(2010).A preliminary study on fingerprinting approach in marine sediment dynamics with the rare earth elements.ACTA OCEANOLOGICA SINICA,29(4),62-77.
MLA	Zhou Xiaojing,et al."A preliminary study on fingerprinting approach in marine sediment dynamics with the rare earth elements".ACTA OCEANOLOGICA SINICA 29.4(2010):62-77.