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基于一个年龄概念的河口污染物输运数值模拟

徐洪周,  林晶,  王东晓

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文章导航 > 水科学进展  > 2009 >  20(1): 92-98
徐洪周, 林晶, 王东晓. 基于一个年龄概念的河口污染物输运数值模拟[J]. 水科学进展, 2009, 20(1): 92-98.
引用本文: 徐洪周, 林晶, 王东晓. 基于一个年龄概念的河口污染物输运数值模拟[J]. 水科学进展, 2009, 20(1): 92-98.
shu
XU Hong-zhou, LIN Jing, WANG Dong-xiao. Numerical study on pollutant transport in estuary based on age concept[J]. Advances in Water Science, 2009, 20(1): 92-98.
Citation: XU Hong-zhou, LIN Jing, WANG Dong-xiao. Numerical study on pollutant transport in estuary based on age concept[J]. Advances in Water Science, 2009, 20(1): 92-98.
shu

基于一个年龄概念的河口污染物输运数值模拟

  • 1.

    中国科学院南海海洋研究所LED实验室, 广东, 广州, 510301;

  • 2.

    Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA;

  • 3.

    华东师范大学河口海岸学国家重点实验室, 上海, 200062

基金项目: 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);中国科学院资源环境领域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"(KZCX3-SW-227);中国博士后科学基金资助项目(20080430638);美国国家海洋维护中心和美国Charleston近岸维护中心支撑的美国NOAA基金CORMP(Coastal Ocean Research and Monitoring Program)资助项目(NA16RP2675)
详细信息
    作者简介:

    徐洪周(1979- ),男,安徽怀宁人,博士,主要从事河口物理-生态耦合模拟研究.E-mail:hzxu@scsio.ac.cn

  • 中图分类号: P343.5

Numerical study on pollutant transport in estuary based on age concept

  • 1.

    LED, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;

  • 2.

    Department of Marine, Earth and Atmosphere Science, North Carolina State University, Raleigh, NC 27695, USA;

  • 3.

    State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Funds: The study is financially supported by the Key Programs of the Chinese Academy of Science (No.KZCX3-SW-227)

  • 摘要: 根据Deleersnijder定义的一个平均年龄概念,运用耦合了物质输运模式的一个三维水动力-富营养化数值模型(HEM-3D),研究了位于美国北卡罗莱纳州Pamlico河口(PRE)的污染物输运时间在不同淡水流量影响下的分布情况。模型结果表明,在正常期,污染物被输运出PRE需要大约65d的时间。而在枯水期和洪水期,污染物分别需要230d和20d时间被输运出PRE。这表明物质输运过程明显受淡水流量的影响。污染物输运时间的空间变化显著受河口中盐度入侵的影响,咸水入侵在其可以达到的最大区域形成了一个盐度锋面,而这个锋面阻碍了污染物向外的输运。盐度层化对输运时间的垂向分布影响显著,输运时间垂向梯度随着盐度层化的增强而增大。
    Abstract: Using a mean age concept defined by Deleersnijder,we apply the three-dimensional hydrodynamic and eutrophication model HEM-3D to investigate the pollutant age distribution under different river discharge conditions in the Pamlico river estuary (PRE),North Carolina.The model results reveal that it takes about 65 days for pollutant to be transported out of PRE during normal season,while,it takes 230 days and 20 days for pollutant substances to be transported out of PRE during dry and flood seasons,respectively.The time differences indicate that the transport process is a function of river discharge.The spatial variation of the pollutant transport age is significantly affected by the salinity intrusion in the PRE; the later forms a salinity front at its most upstream location.The front inhibits the outward transport of pollutant.The salinity stratification plays an important role in the vertical distribution of the pollutant transport age.The vertical difference in age is enhanced as the salinity stratification increases.
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出版历程
  • 收稿日期:  2008-01-07
  • 刊出日期:  2009-01-25

基于一个年龄概念的河口污染物输运数值模拟

  • 1. 中国科学院南海海洋研究所LED实验室, 广东, 广州, 510301;
  • 2. Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA;
  • 3. 华东师范大学河口海岸学国家重点实验室, 上海, 200062
    • 基金项目:  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);中国科学院资源环境领域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"(KZCX3-SW-227);中国博士后科学基金资助项目(20080430638);美国国家海洋维护中心和美国Charleston近岸维护中心支撑的美国NOAA基金CORMP(Coastal Ocean Research and Monitoring Program)资助项目(NA16RP2675)
    作者简介:

    徐洪周(1979- ),男,安徽怀宁人,博士,主要从事河口物理-生态耦合模拟研究.E-mail:hzxu@scsio.ac.cn

  • 收稿日期: 2008-01-07
  • 刊出日期: 2009-01-25

  • 中图分类号: P343.5

摘要: 根据Deleersnijder定义的一个平均年龄概念,运用耦合了物质输运模式的一个三维水动力-富营养化数值模型(HEM-3D),研究了位于美国北卡罗莱纳州Pamlico河口(PRE)的污染物输运时间在不同淡水流量影响下的分布情况。模型结果表明,在正常期,污染物被输运出PRE需要大约65d的时间。而在枯水期和洪水期,污染物分别需要230d和20d时间被输运出PRE。这表明物质输运过程明显受淡水流量的影响。污染物输运时间的空间变化显著受河口中盐度入侵的影响,咸水入侵在其可以达到的最大区域形成了一个盐度锋面,而这个锋面阻碍了污染物向外的输运。盐度层化对输运时间的垂向分布影响显著,输运时间垂向梯度随着盐度层化的增强而增大。

English Abstract

徐洪周, 林晶, 王东晓. 基于一个年龄概念的河口污染物输运数值模拟[J]. 水科学进展, 2009, 20(1): 92-98.
引用本文: 徐洪周, 林晶, 王东晓. 基于一个年龄概念的河口污染物输运数值模拟[J]. 水科学进展, 2009, 20(1): 92-98.
shu
XU Hong-zhou, LIN Jing, WANG Dong-xiao. Numerical study on pollutant transport in estuary based on age concept[J]. Advances in Water Science, 2009, 20(1): 92-98.
Citation: XU Hong-zhou, LIN Jing, WANG Dong-xiao. Numerical study on pollutant transport in estuary based on age concept[J]. Advances in Water Science, 2009, 20(1): 92-98.
shu

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