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首页> 外文期刊>Estuarine Coastal and Shelf Science >What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China
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What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China

机译：什么过程控制通过浅海峡的净电流？中国渤海海峡的回顾与应用

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摘要

We review the key processes controlling the net water circulation in shallow straits. The circulation is mainly barotropic, driven by the difference in mean sea level and tides on either side of the strait, the wind, the meandering of the currents in the adjoining seas, the bathymetry including the shape and width of the mouths and the presence of narrows, shoals, sills, islands, and lateral embayments. As the oceanography forcing can be non-synchronised on either side of the strait, the resulting net currents through the strait may appear chaotic. We apply these findings to the net circulation through the Bohai Strait in China using local wind, remote-sensing data of currents and sea level, and a hydrodynamic model. The net currents through the Bohai Strait were episodic. They were largest during winter storms when the wind generated a cyclonic coastal current in the northern Yellow Sea that flowed across the width of the Bohai Strait. Like the Luzon Strait, this current meandered and a branch of the current intruded into the northern Bohai Strait along the deeper channel. The wind set-up in the Bohai Sea and the wind-driven longshore current in the southern Bohai Sea generated a seaward flow through the southern Bohai Strait, somewhat like in Irbe Strait. As with the straits of the Seto Inland Sea, stagnation occurred in some embayments. As in the Torres Strait, the islands in the southern Bohai Strait retarded the net flow and increased the width of the outflow zone. These flows were also modulated at very long periods (similar to 60 days) by long waves in the Yellow Sea, possibly generated by meandering of the Kuroshio Current that created an additional sea level slope through the strait. The transit time in the Bohai Strait was 60 and 10 days, respectively, during calm weather and winter storms. The residence time in the Bohai Sea was estimated to be about 1.68 years by the LOICZ model and 1.56 years by the hydrodynamic model, and the influence of the river runoff, including the Yellow River, was negligible. (C) 2015 Elsevier Ltd. All rights reserved.
机译：我们回顾了控制浅海峡净水循环的关键过程。海峡的主要是正压环流，这是由海峡两岸的平均海平面和潮汐，风，相邻海流中的曲折，海深，包括嘴的形状和宽度以及海峡的存在而引起的。狭窄，浅滩，窗台，岛屿和侧墙。由于海峡两岸的海洋强迫可能是不同步的，因此通过海峡产生的净电流可​​能会出现混乱。我们使用本地风，洋流和海平面的遥感数据以及水动力模型将这些发现应用于中国环渤海的净循环。流经渤海海峡的净水流是偶发性的。它们是冬季风暴中最大的一次，当时的风在黄海北部产生了旋风沿海流，流经渤海海峡的整个宽度。像吕宋海峡一样，这股海流蜿蜒而流，并沿着更深的河道侵入了渤海海峡北部。渤海的风场和渤海南部的风浪驱动的近海流在渤海海峡南部产生了向海流动，有点像在易北海峡。与濑户内海海峡一样，在某些航道内停滞。与托雷斯海峡一样，渤海海峡南部的岛屿阻碍了净流量并增加了流出区的宽度。黄海中的长波也很长时间（大约60天）对这些水流进行了调节，这可能是由于黑潮形成的曲折造成了海峡的海平面上升。在平静的天气和冬季的暴风雨中，渤海海峡的运输时间分别为60天和10天。根据LOICZ模型，在渤海的停留时间估计约为1.68年，而通过水动力模型，估计在渤海的停留时间为1.56年，包括黄河在内的河流径流的影响可以忽略不计。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2015年第5期|1-11|共11页
  • 作者

    Li Yanfang; Wolanski Eric; Zhang Hua;

  • 作者单位

    Chinese Acad Sci, Yantai Inst Coastal Zone Res, Laishan Dist, Yantai, Peoples R China;

    James Cook Univ, Sch Marine & Trop Biol & TropWATER, Townsville, Qld 4811, Australia|Australian Inst Marine Sci, Townsville, Qld 4810, Australia;

    Chinese Acad Sci, Yantai Inst Coastal Zone Res, Laishan Dist, Yantai, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    straits; flushing; sea level; currents; tides; wind;

    机译：海峡;潮水;海平面;水流;潮汐;风;

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