Non-conservative mixing behavior of colored dissolved organic matter in a humic-rich, turbid estuary

被引：81

作者：

Uher, G ^{[1
]}

Hughes, C ^{[1
]}

Henry, G ^{[1
]}

Upstill-Goddard, RC ^{[1
]}

机构：

[1] Newcastle Univ, Dept Marine Sci & Coastal Management, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 17期

关键词：

D O I：

10.1029/2000GL012509

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The estuarine mixing behavior of colored dissolved organic matter (CDOM) absorbance was investigated in combined field and laboratory studies. From February to October 1998, surface water samples were collected along 9 transects in the Tyne estuary, Northeast England, from the tidal limit into the coastal North Sea. In 8 of these transects, mixing plots of absorbance vs. salinity indicated substantial removal of CDOM absorbance (average: 32%) in the upper estuary. Results from laboratory studies under simulated estuarine conditions suggest that an average of 21% (range: 9-39%) of riverine CDOM may be removed by adsorption onto suspended sediment, while CDOM flocculation accounted for an average removal of only 6% (range: 0-18%). We propose that adsorptive removal exerts a major control on CDOM in estuaries with elevated turbidity levels.

引用

页码：3309 / 3312

页数：4

共 14 条

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