The black water around the Changjiang Estuary in China in the spring of 2003

HE Xian-qiang; TANG Jun-wu; BAI Yan; PAN De-lu; ZHU Qian-kun; GONG Fang

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HE Xian-qiang, TANG Jun-wu, BAI Yan, PAN De-lu, ZHU Qian-kun, GONG Fang. The black water around the Changjiang Estuary in China in the spring of 2003[J]. Haiyang Xuebao, 2009, 31(3): 30-38.

Citation:

HE Xian-qiang, TANG Jun-wu, BAI Yan, PAN De-lu, ZHU Qian-kun, GONG Fang. The black water around the Changjiang Estuary in China in the spring of 2003[J]. Haiyang Xuebao, 2009, 31(3): 30-38.

HE Xian-qiang, TANG Jun-wu, BAI Yan, PAN De-lu, ZHU Qian-kun, GONG Fang. The black water around the Changjiang Estuary in China in the spring of 2003[J]. Haiyang Xuebao, 2009, 31(3): 30-38.

Citation:

HE Xian-qiang, TANG Jun-wu, BAI Yan, PAN De-lu, ZHU Qian-kun, GONG Fang. The black water around the Changjiang Estuary in China in the spring of 2003[J]. Haiyang Xuebao, 2009, 31(3): 30-38.

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The black water around the Changjiang Estuary in China in the spring of 2003

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China

Received Date: 2008-06-10
Rev Recd Date: 2008-12-10

Abstract

Abstract

The Changjiang Estuary is located in the East China Sea shelf with shallow water1 Affected by the tide mixing and the runoff of the Chang jiang River and the Qiantang River,the turbidity is very high. Generally,the water-leaving radiance is high in the turbid water with particle scattering. On the basis of the in-situ data and the ocean color remote sensing data of SeaWiFS,it was found that there was a black water region with thenorm alized water-leaving radiances less than 0.5 mW/(cm²·μm·sr) . The optical principle of the occurrence of this black water was analyzed with the inherentoptical properties and the ocean color components. The results show that the black water was caused by the relative low values of the suspended particlematter content and the back scatteringratio. In the black water region,the percentage of the phytoplankt on absorption was relative high,and the large radius of the phytoplankton particle caused the low value of the back scatteringration.
- black water,
- Changjiang Estuary,
- inherentoptical property,
- ocean color remote sensing

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References(25)

References

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