Sources and transport of particulate organic carbon in the Amazon River and estuary

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	Sources and transport of particulate organic carbon in the Amazon River and estuary
	D. -L. Cai ; F. C. Tan ; J. M. Edmond
发表期刊	Estuarine, Coastal and Shelf Science
	1988
卷号	26 期号:1 页码:40192
关键词	Particulate Matter Organic Matter Isotope Ratios Estuaries Transport Brazil Coast
通讯作者	F. C. Tan
英文摘要	Stable carbon isotope ratios have been used to study the sources of particulate organic carbon (POC) in the Amazon River and its tributaries as well as to examine the transport of the riverine POC into the oceanic environment. POC in the upper reaches of the Amazon River has more positive δ13C values (−24·5 to −28·0‰) than that in the middle and lower reaches (−27·9 to −30·1‰). The δ13C content of POC from the tributaries is generally more negative than that observed in the Amazon main channel. This δ13C evidence shows that the POC in the Amazon main channel is predominantly of terrestrial origin rather than a result of in situ production. A large range of δ13C values (−17·5 to −28·4‰) is observed in the Amazon estuary and plume and is attributed to the mixing of riverine and marine POC. POC δ13C measurements detect riverine organic detritus as far as 290 km offshore in a direction parallel to the river channel; the isotopic signal of riverine POC can be seen as far as 1100 km to the north-west of the river mouth in the Amazon River plume.
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/4645
专题	科研共享资源
推荐引用方式 GB/T 7714	D. -L. Cai,F. C. Tan,J. M. Edmond. Sources and transport of particulate organic carbon in the Amazon River and estuary[J]. Estuarine, Coastal and Shelf Science,1988,26(1):40192.
APA	D. -L. Cai,F. C. Tan,&J. M. Edmond.(1988).Sources and transport of particulate organic carbon in the Amazon River and estuary.Estuarine, Coastal and Shelf Science,26(1),40192.
MLA	D. -L. Cai,et al."Sources and transport of particulate organic carbon in the Amazon River and estuary".Estuarine, Coastal and Shelf Science 26.1(1988):40192.

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