| BAI Yan,HE Xianqiang,PAN Delu,ZHU Qiankun,GONG Fang.The black water around the Changjiang (Yangtze) Estuary in the spring of 2003[J].Acta Oceanologica Sinica,2009,(4):23-31 |
| The black water around the Changjiang (Yangtze) Estuary in the spring of 2003 |
| The black water around the Changjiang (Yangtze) Estuary in the spring of 2003 |
| 投稿时间：2009-02-08 修订日期：2009-07-05 |
| DOI： |
| Key words:Black water Changjiang Estuary Inherent optical properties Ocean color remote sensing |
| 中文关键词: Black water Changjiang Estuary Inherent optical properties Ocean color remote sensing |
| 基金项目:The National Basic Research and Development Program ("973" Program) of China under contract No. 2009CB421202. the National Natural Science Foundation of China under contract No. 40706061; the National High Technology Development Program ("863" Program) of China under contract Nos 2007AA12Z137 and 2008AA09Z104. |
| Author Name | Affiliation | E-mail | | BAI Yan | State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou 310012, China
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | HE Xianqiang | State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou 310012, China
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | hexianqiang@sina.com.cn | | PAN Delu | State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou 310012, China
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | ZHU Qiankun | State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou 310012, China
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | GONG Fang | Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | |
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| Abstract: |
| The Changjiang (Yangtze) Estuary is located in the East China Sea shelf with shallow water. Affected by the tide mixing and the runoff of the Changjiang River and the Qiantang River, the turbidity is very high. Generally, the water-leaving radiance is high in the turbid water because of the large particle scattering. Based on the in-situ data and ocean color remote sensing data of SeaWiFS, it was found that there was a black water region with the normalized water-leaving radiances less than 0.5 mW/(cm2·μm2·sr). The optical principle of the occurrence of this black water was analyzed by the inherent optical properties and the ocean color components. The results show that black water is caused by the relative low values of the suspended particle matter concentration and the back scattering ratio. In the black water region, the percentage of the phytoplankton absorption was relatively high, and the large size of the phytoplankton caused the low value of the particle backscattering ratio. |
| 中文摘要: |
| The Changjiang (Yangtze) Estuary is located in the East China Sea shelf with shallow water. Affected by the tide mixing and the runoff of the Changjiang River and the Qiantang River, the turbidity is very high. Generally, the water-leaving radiance is high in the turbid water because of the large particle scattering. Based on the in-situ data and ocean color remote sensing data of SeaWiFS, it was found that there was a black water region with the normalized water-leaving radiances less than 0.5 mW/(cm2·μm2·sr). The optical principle of the occurrence of this black water was analyzed by the inherent optical properties and the ocean color components. The results show that black water is caused by the relative low values of the suspended particle matter concentration and the back scattering ratio. In the black water region, the percentage of the phytoplankton absorption was relatively high, and the large size of the phytoplankton caused the low value of the particle backscattering ratio. |
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