珠江河口夏季缺氧现象的模拟

罗琳; 李适宇; 王东晓

珠江河口夏季缺氧现象的模拟

1.
中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广东广州 510301;
2.
中山大学环境科学与工程学院, 广东广州 510275

基金项目: 中国科学院知识创新工程重要方向项目“南海北部海洋生态动力学特征研究”(kzcx-sw-227);广东省重大科技专项规划项目“基于卫星遥感的珠江口咸潮预测技术模型开发”(2007A032600002)

详细信息

作者简介:
罗琳(1978- ),女,广西柳州人,博士,主要从事河口区水质模拟研究.E-mail:luolin@scsio.ac.cn

中图分类号: P342
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- 文章访问数: 249
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出版历程
- 收稿日期: 2007-07-24
- 刊出日期: 2008-09-24

Modelling of hypoxia in the Pearl River estuary in summer

1.
Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China;
2.
School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China

摘要

摘要: 夏季底层水体缺氧现象是珠江河口存在的环境问题之一。使用三维水动力-生态耦合模型来分析珠江口缺氧现象的分布状况和产生原因。模拟结果表明:模型能很好的再现珠江口的缺氧敏感性区域和强度。珠江口存在的底层水体缺氧现象是水体强烈层化和生化耗氧过程共同作用的结果。缺氧现象的发展与减退受潮汐涨落的影响。珠江口盐度-潮汐混合锋面和层化作用控制低氧水团的范围和强度。
- 缺氧 /
- 珠江口 /
- 层化作用 /
- 潮汐混合
Abstract: Hypoxia is one of the environmental problems existing in the Pearl River estuary (PRE).In this paper a coupled 3-D hydrodynamic-ecological numerical model is used to investigate the distribution and causes of the hypoxia phenomena in the PRE in summer.Hypoxia at the bottom layer of the major regions is well reproduced by this model,and in complete agreement with the observed pattern.The main results of the simulation show that the hypoxia phenomena in the PRE are caused mainly by the coupled dynamics of the water stratification and biochemical processes.The simulated hypoxia phenomena develop during the neap tide and disappear during the spring tide.The front and salinity stratification impact greatly on the range and intensity of the low oxygen water in the PRE.
- hypoxia /
- Pearl River estuary /
- stratification /
- tidal mixing

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参考文献(14)

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文章访问数: 249
HTML全文浏览量: 52
PDF下载量: 942
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珠江河口夏季缺氧现象的模拟

作者简介: 罗琳(1978- ),女,广西柳州人,博士,主要从事河口区水质模拟研究.E-mail:luolin@scsio.ac.cn

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出版历程

Modelling of hypoxia in the Pearl River estuary in summer

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出版历程

目录

作者简介:
罗琳(1978- ),女,广西柳州人,博士,主要从事河口区水质模拟研究.E-mail:luolin@scsio.ac.cn