A comprehensive sediment dynamics study of a major mud belt system on the inner shelf along an energetic coast.
A comprehensive sediment dynamics study of a major mud belt system on the inner shelf along an energetic coast.
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DOI：
10.1038/s41598-018-22696-w
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发表时间：
2018-03-09
影响因子：
4.6
通讯作者：
Huh CA
中科院分区：
文献类型：
--
作者：
Liu JT;Hsu RT;Yang RJ;Wang YP;Wu H;Du X;Li A;Chien SC;Lee J;Yang S;Zhu J;Su CC;Chang Y;Huh CA
在全球范围内，陆架上的泥区是河流源泥沙扩散的通道。我们解决泥沙动力学的基本问题，重点是泥浆如何保留在浅层内架的海床上，以及泥浆的来源是什么。通过结合动力学、物源学和沉积学的过程综合研究，我们发现将泥浆保持在海床上的关键机制是水柱分层，水柱分层在垂直方向形成动力屏障，限制悬浮沉积物向上混合。我们研究了从长江入海口沿中国浙江和福建沿海延伸到台湾西海岸的1000公里长的泥带。该泥带系统动态依附于以长江为主要来源的河流源。冬季是构造期，主要由浙民海流驱动的长江羽流携带的细粒沉积物沿海岸向西南方向活跃沉积。
Globally mud areas on continental shelves are conduits for the dispersal of fluvial-sourced sediment. We address fundamental issues in sediment dynamics focusing on how mud is retained on the seabed on shallow inner shelves and what are the sources of mud. Through a process-based comprehensive study that integrates dynamics, provenance, and sedimentology, here we show that the key mechanism to keep mud on the seabed is the water-column stratification that forms a dynamic barrier in the vertical that restricts the upward mixing of suspended sediment. We studied the 1000 km-long mud belt that extends from the mouth of the Changjiang (Yangtze) River along the coast of Zhejiang and Fujian Provinces of China and ends on the west coast of Taiwan. This mud belt system is dynamically attached to the fluvial sources, of which the Changjiang River is the primary source. Winter is the constructive phase when active deposition takes place of fine-grained sediment carried mainly by the Changjiang plume driven by Zhe-Min Coastal Currents southwestward along the coast.
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影响因子：
3.6
作者：
Chang, PH;Isobe, A
通讯作者：
Isobe, A
影响因子：
3.6
作者：
Hao, Jiajia;Chen, Yongli;Wang, Fan
通讯作者：
Wang, Fan
影响因子：
2.3
作者：
Lantzsch, Hendrik;Hanebuth, Till J. J.;Henrich, Ruediger
通讯作者：
Henrich, Ruediger
影响因子：
2.2
作者：
Li, Xiaoyan;Jian, Zhimin;Shi, Fengdeng
通讯作者：
Shi, Fengdeng
浙闽沿岸泥浆堆积中心水柱结构与泥沙输运的季节变化
影响因子：
2.3
作者：
Li, Yunhai;Qiao, Lei;Chen, Jian
通讯作者：
Chen, Jian