| The black water around the Changjiang (Yangtze) Estuary in the spring of 2003 |
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| 作者姓名： | BAI Yan HE Xianqiang PAN Delu ZHU Qiankun GONG Fang |
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| 作者单位： | BAI Yan,HE Xianqiang,PAN Delu,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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| 基金项目： | The National Basic Research and Development Program (“973” Program) of China under contract No2009CB421202;;the National Natural Science Foundation of China under contract No 40706061;;the National High Technol-ogy Development Program (“863” Program) of China under contract Nos 2007AA12Z137 and 2008AA09Z104 |
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| 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·...
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| 关 键 词： | 黑色 长江 浅水 海洋水色遥感 粒子散射 浮游植物 颗粒物浓度 东中国海 |
| 收稿时间： | 2/8/2009 12:00:00 AM |
| 修稿时间： | 7/5/2009 12:00:00 AM |
The black water around the Changjiang (Yangtze) Estuary in the spring of 2003 |
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| 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,2009,28(4):23-31. |
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| Authors: | BAI Yan HE Xianqiang PAN Delu ZHU Qiankun and GONG Fang |
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| Institution: | 1.State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.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/(cm~2μm~2·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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| Keywords: | Black water Changjiang Estuary Inherent optical properties Ocean color remote sensing |
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