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学科主题: Optics
题名: Absorption coefficient of yellow substance in the Pearl River estuary
作者: Chen, CQ ; Shi, P ; Yin, KD ; Pan, ZL ; Zhan, HG
关键词: yellow substance ; absorption coefficient ; Pearl River estuary ; GOALS ; remote sensing
刊名: OCEAN REMOTE SENSING AND APPLICATIONS
发表日期: 2003-01-01
卷: 4892, 页:215-221
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanog, LED, Guangzhou 510301, Peoples R China
项目归属: LED
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.
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5523
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Chen, CQ; Shi, P; Yin, KD; Pan, ZL; Zhan, HG.Absorption coefficient of yellow substance in the Pearl River estuary,OCEAN REMOTE SENSING AND APPLICATIONS,2003,4892():215-221
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