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dc.contributor.authorCallahan, J
dc.contributor.authorDai, MH
dc.contributor.author戴民汉
dc.contributor.authorChen, RF
dc.contributor.authorLi, XL
dc.contributor.authorLu, ZM
dc.contributor.authorHuang, W
dc.date.accessioned2011-07-03T14:17:37Z
dc.date.available2011-07-03T14:17:37Z
dc.date.issued2004-10
dc.identifier.citationMARINE CHEMISTRY,2004,89(1-4):211-224zh_CN
dc.identifier.issn0304-4203
dc.identifier.urihttp://dx.doi.org/doi: 10.1016/j.marchem.2004.02.013
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9969
dc.description.abstractChromophoric 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.zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectCDOMzh_CN
dc.subjectPearl River Estuaryzh_CN
dc.subjectfluorescencezh_CN
dc.subjectdissolved organic carbonzh_CN
dc.titleDistribution of dissolved organic matter in the Pearl River Estuary, Chinazh_CN
dc.typeArticlezh_CN


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