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本文运用水体中可见光的传输机理，讨论了光的传输特性与水中悬浮泥沙、色素和黄色物质等的定量关系。同时简述了在秦山核电站邻近海域１９９５年１０月～１９９６年７月间４个航次的有关水光学特征现场测量过程和实验室分析方法。最后，通过水体中太阳光穿透深度和真光层，研究了该邻近海域的光穿透性能的季节性变化。研究表明，核电站运行以来，秦山核电站邻近海域水的光穿透性能变化很小。
In this paper, we use the transmission mechanism of visible light in water to discuss the quantitative relationship between light transmission characteristics and suspended sediment, pigment and yellow matter in water. At the same time, a brief description of the field measurement process and laboratory analysis method of water optical characteristics of 4 voyages between Qinshan Nuclear Power Station in the sea area from October 1995 to July 1996 is given. Finally, the seasonal variation of light penetration in the adjacent sea area is studied by the depth of penetration of solar light in the water body and the euphotic layer. Research shows that the light penetration performance of Qinshan Nuclear Power Station in the sea area has little change since the operation of nuclear power plant.