QQ客服 官方微博 反馈留言

	Distribution of dissolved organic matter in the Pearl River Estuary, China
	Callahan J ; Dai MH ; Chen RF ; Li XL ; Lu ZM ; Huang W
	2004-10
关键词	CDOM Pearl River Estuary fluorescence dissolved organic carbon
英文摘要	Chromophoric dissolved organic matter (CDOM) fluorescence and dissolved organic carbon (DOC) were measured in the Lingdingyang Estuary, a major component of the Pearl River Delta, China, in May 2001 and November 2002. Measurements of CDOM and DOC suggest multiple sources of dissolved organic matter (DOM) in the low-salinity region of the estuary, due to the mixing of four freshwater outlets, Humen, Jiaomen, Honqimen and Hengmen, all with different freshwater endmembers and all flowing into the head of the Lingdingyang. Our 2002 cruise expanded efforts to characterize these four major outlets, allowing for the quantification of CDOM inputs within this complex watershed. DOC and CDOM appear conservative in mid-salinity (5-20) waters, suggesting that mixing dominates production and removal processes over time scales on the order of 3 days, the residence time of water in this region of the estuary. DOC and fluorescence are linearly correlated in the mid-salinity region of the estuary north of Shenzhen, suggesting that in this region, terrestrial inputs dominate both signals. However, this relationship does not continue out onto the shelf, where water masses of differing optical properties mix. The CDOM/DOC ratio decreases with increasing salinity as would be expected through phototrasformation of CDOM into non-fluorescent DOC. Additionally, this ratio at low salinity appears to vary seasonally, with a higher value in Spring (high flow) compared to Fall (low flow). (C) 2004 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/1389]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Callahan J,Dai MH,Chen RF,et al. Distribution of dissolved organic matter in the Pearl River Estuary, China[J],2004.
APA	Callahan J,Dai MH,Chen RF,Li XL,Lu ZM,&Huang W.(2004).Distribution of dissolved organic matter in the Pearl River Estuary, China..
MLA	Callahan J,et al."Distribution of dissolved organic matter in the Pearl River Estuary, China".(2004).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。