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    0608号台风“桑美”过境前后对长江口外海域环境的影响

    陈斌 王凯 刘健 高飞

    陈斌, 王凯, 刘健, 高飞, 2016. 0608号台风“桑美”过境前后对长江口外海域环境的影响. 地球科学, 41(8): 1402-1412. doi: 10.3799/dqkx.2016.111
    引用本文: 陈斌, 王凯, 刘健, 高飞, 2016. 0608号台风“桑美”过境前后对长江口外海域环境的影响. 地球科学, 41(8): 1402-1412. doi: 10.3799/dqkx.2016.111
    Chen Bin, Wang Kai, Liu Jian, Gao Fei, 2016. The Impact of Super Typhoon Saomai (0608) on the Offshore Environment near the Yangtze Estuary. Earth Science, 41(8): 1402-1412. doi: 10.3799/dqkx.2016.111
    Citation: Chen Bin, Wang Kai, Liu Jian, Gao Fei, 2016. The Impact of Super Typhoon Saomai (0608) on the Offshore Environment near the Yangtze Estuary. Earth Science, 41(8): 1402-1412. doi: 10.3799/dqkx.2016.111

    0608号台风“桑美”过境前后对长江口外海域环境的影响

    doi: 10.3799/dqkx.2016.111
    基金项目: 

    科技基础性工作专项项目 2013FY112200

    国家自然科学基金重点项目 41330964

    详细信息
      作者简介:

      陈斌(1979-),男,副研究员,博士.主要从事河口海岸沉积动力及环境演变方面研究.E-mail: chenbin1007@hotmail.com

    • 中图分类号: P731

    The Impact of Super Typhoon Saomai (0608) on the Offshore Environment near the Yangtze Estuary

    • 摘要: 台风是短期改变海洋环境的重要动力因素,会对近岸河口环境产生巨大的影响.基于0608号台风“桑美”过境前后长江口外海域多个站位的调查资料,分析了台风过境前后长江口外海域温度、盐度、浊度等环境要素的变化.结果表明:在台风引起的水体平流输运和垂向混合作用下,长江口外海域的温度、盐度、浊度等结构发生了较大改变.表层水体的温度降低,盐度增大;底层水体温度升高,盐度降低;温跃层厚度增大,层结构强度减弱;东部海域的盐跃层基本消失,温盐跃层对营养盐垂向输运的限制减弱,导致叶绿素a浓度值升高;台湾暖流底层冷水明显向近岸涌升,近岸上升流特征更为显著,同时台湾暖流底层冷水的中心位置向东偏移;水体浊度减小,尤其是近岸水深较浅海域,细颗粒沉积物被强平流作用输运.

       

    • 图  1  研究海域地形与调查站位

      黄线为观察断面位置

      Fig.  1.  Topographic sketch of study area and station locations

      图  2  台风桑美路径

      Fig.  2.  Tracks of typhoon "Saomai"

      图  3  台风前研究海域温度、盐度、叶绿素a和浊度平面(表层、底层)分布

      Fig.  3.  Temperature, salinity, chlorophyll a and turbidity distributions in the surface and bottom layers of study area before typhoon "Saomai"

      图  4  台风前A、B、C断面的温度、盐度、叶绿素a和浊度分布

      Fig.  4.  Temperature, salinity, chlorophyll a and turbidity distributions in A, B and C sections before typhoon "Saomai"

      图  5  台风后研究海域温度、盐度、叶绿素a和浊度平面(表层、底层)分布

      Fig.  5.  Temperature, salinity, chlorophyll a and turbidity distributions in the surface and bottom layers of study area after typhoon "Saomai"

      图  6  台风后A、B、C断面的温度、盐度、叶绿素a和浊度分布

      Fig.  6.  Temperature, salinity, chlorophyll a and turbidity distributions in A, B and C sections after typhoon "Saomai"

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    • 收稿日期:  2015-11-30
    • 刊出日期:  2016-08-15

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