Anthropogenic Fingerprint in Beibu Gulf (South China Sea) Sediments

doi:10.2112/SI_66_6

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质调查局广州海洋地质调查局

	Anthropogenic Fingerprint in Beibu Gulf (South China Sea) Sediments
	Xia, Zhen 3; Waniek, Joanna J.; Leipe, Thomas 1
刊名	JOURNAL OF COASTAL RESEARCH
	2013
卷号	SI 66 页码:72-90
关键词	Sedimentary environment anthropogenic impact element analysis background values
ISSN号	0749-0208
DOI	10.2112/SI_66_6
英文摘要	Surface sediments and five cores were chosen to determine grain size, geochemical elements, heavy metals concentrations and age using C-14 dating to study sedimentary environment and anthropogenic impact in the Beibu Gulf (South China Sea). The grain size analysis shows differences in the depositional environment amongst the subareas of the gulf. In the north of the gulf, the depositional environment is strong and unstable with complicated hydrodynamics because of the combined influence of rivers, tide, littoral current and the monsoon. In the central part, the depositional environment is weaker and stable, whereas in the south of the gulf (at the entrance), the deposition is higher and influenced mainly by tide. The deposition rate is around 0.3 mm/yr based on C-14 dating. The geochemical element analysis indicates different sediment sources in different subareas of the gulf and possible influence of a biogenic source. The terrigenous elements (Al, Fe, Li, Ti, K and Zr) have high positive correlation coefficients, and originate from the northern coast and Hainan Island. The trace elements are mostly enriched within the fine sediments. The enrichment factors (EF) and cultural enrichment factors (CEF) based on aluminum and titanium show that total organic carbon (TOC), As and Hg have high concentrations in the surficial sediments in the north (9.92 mg/kg and 34 mu g/kg) and the south (15.5 mg/kg and 22 mu g/kg) of the gulf, and are enriched below the surface. Despite the regional differences in heavy metal concentrations in surface sediments, no anthropogenic impact was observed in the center of the gulf according to the results of EF and CEF using the core data. Measured concentrations of the anthropogenic elements were below the evaluation criterion values of the National Standards of GB18668-2002, P. R. China indicating low anthropogenic impact in the entire gulf.
学科主题	第四纪地质
WOS关键词	RED-RIVER DELTA ; VIETNAM ; TONKIN
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
语种	英语
出版者	COASTAL EDUCATION & RESEARCH FOUNDATION
WOS记录号	WOS:000322944700007
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39962]
专题	中国地质调查局广州海洋地质调查局
作者单位	1.Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China. 2.Leibniz Inst Balt Sea Res, D-18119 Rostock, Germany. 3.中国地质调查局广州海洋地质调查局
推荐引用方式 GB/T 7714	Xia, Zhen,Waniek, Joanna J.,Leipe, Thomas. Anthropogenic Fingerprint in Beibu Gulf (South China Sea) Sediments[J]. JOURNAL OF COASTAL RESEARCH,2013,SI 66:72-90.
APA	Xia, Zhen,Waniek, Joanna J.,&Leipe, Thomas.(2013).Anthropogenic Fingerprint in Beibu Gulf (South China Sea) Sediments.JOURNAL OF COASTAL RESEARCH,SI 66,72-90.
MLA	Xia, Zhen,et al."Anthropogenic Fingerprint in Beibu Gulf (South China Sea) Sediments".JOURNAL OF COASTAL RESEARCH SI 66(2013):72-90.