Impacts of Different Dynamic Factors on the Saltwater Intrusion in the Northern Branch of the Yangtze Estuary
Impacts of Different Dynamic Factors on the Saltwater Intrusion in the Northern Branch of the Yangtze Estuary
复制标题
不同动力因素对长江口北支咸水入侵的影响
DOI：
10.1007/s13344-019-0065-x
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发表时间：
2019-12
影响因子：
1.6
通讯作者：
Zhang Jin-shan
中科院分区：
文献类型：
--
作者：
Wang Jin-hua;Zhang De-bin;Zhang Wei-sheng;Zhang Jin-shan
建立了三维斜压数值模型，研究了长江口北方分支（NB）盐度在径流、风和水流作用下的时空分布。理想化、过程化的研究表明，枯水期下游径流是NB向南分支（SB）溢出的主要驱动因素。由于径流由丰水期向枯水期过渡，NB比SB需要更长的时间才能达到动力稳定状态。旱季NB的垂直分层强度具有明显的周期性现象，在径流量少和北风的作用下，分层强度增强，进一步削弱了水分的垂直输送。动量平衡分析表明，考虑中等偏北风的影响，向陆净通量增加;考虑大潮边界流的影响，向陆净通量增加。在边界流的影响下，增大了NB的平均盐度，以及NB对SB的入侵程度，表明黄海近岸海流是影响黄海NB盐水入侵的重要因素。
A 3-D baroclinic numerical model is established to study the temporal and spatial distribution of salinity in the Northern Branch (NB) of the Yangtze Estuary (YE) in response to river runoff, wind and currents. The idealized, process-oriented studies show that the lower river runoff in the dry season is the main driving factor for the spilling over from the NB to the Southern Branch (SB). The NB takes longer time to get in dynamic stable state compared with the SB, as the runoff transfers from the wet season to the dry season. The vertical stratification intensity of the NB has obvious periodic phenomena in the dry season, and the stratification strength is enhanced under the action of low runoff and north wind, which further weakens the vertical transport of water. Momentum balance analysis suggested that the landward net flux increases when considering the influence of the moderate north wind, and the landward flux will enhance if considering the boundary current during the spring tide. With the influence of the boundary current, increases the average salinity of the NB, as well as the intrusion degree from the NB to the SB. This indicates that the nearshore ocean current of the Yellow Sea is an important factor affecting the saltwater intrusion in the NB of the YE.
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影响因子：
3.2
作者：
J. Ge;Changsheng Chen;J. Qi;P. Ding;R. Beardsley
通讯作者：
J. Ge;Changsheng Chen;J. Qi;P. Ding;R. Beardsley
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影响因子：
3.2
作者：
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通讯作者：
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影响因子：
4.4
作者：
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通讯作者：
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影响因子：
1.4
作者：
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通讯作者：
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影响因子：
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作者：
Haosheng Huang;Changsheng Chen;G. Cowles;C. Winant;R. Beardsley;K. Hedstrom;D. Haidvogel
通讯作者：
Haosheng Huang;Changsheng Chen;G. Cowles;C. Winant;R. Beardsley;K. Hedstrom;D. Haidvogel