Absorption coefficient of yellow substance in the Pearl River estuary
Chen, CQ; Shi, P; Yin, KD; Pan, ZL; Zhan, HG
2003
发表期刊OCEAN REMOTE SENSING AND APPLICATIONS
ISSN0277-786X
卷号4892页码:215-221
摘要The Pearl River system is mainly located in the Guangdong Province in southern China, with the length of 2214 km. and total area of 453,690 km(2). The Pearl River estuary is the largest estuary in the South China Sea (SCS), with a mean annual discharge of 326 billion m(3), of which are about 30 million tons of dissolved matters annually discharged into the estuary. The high concentration of suspended sediments and dissolved matters makes the optical properties of the coastal waters very complex. The spectral absorption coefficient of yellow substance (A(y)(lambda) is one of the inherent optical properties that influence the reflectance (or water-leaving radiance) of the water body. It is essential to measure A(y)(lambda) and to quantify its contributions to the total absorption of the water body. In this study, the Gelbstoff Optical Analyse Laboratory System (GOALS), with spectral range from 200 to 850 nm and with spectral resolution of 0.37 nm per pixel, was used to measure A(y)(lambda) in the Pearl River estuary and in the adjacent coastal waters in July 2002. A(y)(400) was around 1.5 m(-1) near the river mouth (zero salinity). It decreases with increasing salinity following an apparent non-linear mixing line. There is no apparent relationship between A(y)(400) and dissolved organic carbon (DOC) concentration, indicating that the estuary is a complex, non-point source environment. This presents a great challenge to remote sensing study in this area.
部门归属Chinese Acad Sci, S China Sea Inst Oceanog, LED, Guangzhou 510301, Peoples R China
关键词Yellow Substance Absorption Coefficient Pearl River Estuary Goals Remote Sensing
学科领域Optics
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收录类别sci
资助项目LED
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5523
专题热带海洋环境国家重点实验室(LTO)
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Chen, CQ,Shi, P,Yin, KD,et al. Absorption coefficient of yellow substance in the Pearl River estuary[J]. OCEAN REMOTE SENSING AND APPLICATIONS,2003,4892:215-221.
APA Chen, CQ,Shi, P,Yin, KD,Pan, ZL,&Zhan, HG.(2003).Absorption coefficient of yellow substance in the Pearl River estuary.OCEAN REMOTE SENSING AND APPLICATIONS,4892,215-221.
MLA Chen, CQ,et al."Absorption coefficient of yellow substance in the Pearl River estuary".OCEAN REMOTE SENSING AND APPLICATIONS 4892(2003):215-221.
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