| 大亚湾温跃层形成及其对有关环境要素的影响 |
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| 引用本文： | 殷建平,王友绍,徐继荣,孙翠慈,张凤琴.大亚湾温跃层形成及其对有关环境要素的影响[J].海洋通报,2006,25(4):1-8. |
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| 作者姓名： | 殷建平 王友绍 徐继荣 孙翠慈 张凤琴 |
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| 作者单位： | 1. 中国科学院南海海洋研究所,中国科学院热带海洋环境动力学重点实验室,广东,广州,510301;中国科学院研究生院,北京,100039
2. 中国科学院南海海洋研究所,中国科学院热带海洋环境动力学重点实验室,广东,广州,510301 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(No.KZCX3-SW-214和No.KSCX2-SW-132)，中科院南海海洋研究所知识创新工程前沿领域项目(No.LYQY200303)提供资助 |
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| 摘 要： | 温跃层是海洋环境中的一种重要物理现象,对海洋的环境生态系统有着重要的影响。大亚湾温跃层是受粤东上升流和夏季表层海水升温双重作用而形成的。通过对大亚湾海域水温、盐度、溶解氧等众多环境要素的长期调查取样分析显示,该海域温跃层是季节性温跃层,一般发生在每年的5—10月份,6月下旬到9月中旬分层现象比较显著,盐跃层和氧跃层会相伴发生。受核电站热排水的影响,湾西侧尤其是核电站前海域的温跃层较其它区域明显和持久。数据显示在温跃层发生期内,由于海水的分层效应,温度、盐度、pH值、DO、BOD5和COD、营养盐及叶绿素等都受到不同程度的影响,形成明显的表底层差异或层次梯度。
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| 关 键 词： | 大亚湾 温跃层 环境要素 影响 |
| 文章编号： | 1001-6392（2006）04-0001-08 |
| 收稿时间： | 2005-06-14 |
| 修稿时间： | 2005-09-27 |
Seasonal Thermocline in the Daya Bay and its Influence on the Environmental Factors of Seawater |
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| YIN Jianping, WANG Youshao, XU Jirong.Seasonal Thermocline in the Daya Bay and its Influence on the Environmental Factors of Seawater[J].Marine Science Bulletin,2006,25(4):1-8. |
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| Authors: | YIN Jianping WANG Youshao XU Jirong |
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| Institution: | 1. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, Guangdong, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The thermocline is one of familiar physical phenomena in the ocean, the transitional layer between the mixed layer at the surface and the deep water layer, the definition of which is based on temperature. In the thermocline, the temperature would decrease rapidly from the higher surface temperature to the much colder deep water temperature. The formation of seasonal thermocline in the Daya Bay due to the double effects of the upwelling stream and the rising of surface water temperature. The seasonal thermocline's formation time is about from May to October in the Daya bay, especially obvious between July and September. The hot cooling water from the nuclear power station has a visible influence on the thermocline, which prolongs its duration and enhance its intensity in the sea area in front of power station. The vertical mixing would practically stop when the themocline has formed, which signals the onset of stratification. The stratification can have a great influence on some of the environment factors such as temperature, salinity, DO, COD, BOD5 and nutrients etc., and have an indirect effect on the environment of Daya Bay. |
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| Keywords: | Daya bay thermocline environmental factor influence |
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