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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >River-derived sediment suspension and transport in the Bohai, Yellow, and East China Seas: A preliminary modeling study
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River-derived sediment suspension and transport in the Bohai, Yellow, and East China Seas: A preliminary modeling study

机译：渤海，黄海和东海河流性沉积物的悬浮和迁移：初步模拟研究

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摘要

Coastal circulation and transport of sediment derived from the Huanghe and Changjiang Rivers in the Bohai, Yellow, and East China Seas (BYECS) over the past 48 years (1958-2005) were simulated and analyzed using the Coupled Ocean-Atmosphere-Wave-Sediment Transport modeling system. Model skill assessments against in situ wave and hydrographical observations indicate the model simulation can reasonably well reproduce the hydrodynamic environment of the BYECS. Model-simulated regions of high fine sediment accumulation rate correlate well with the observed regions, which are known as "muddy patches." Bottom stress analysis further indicates that the formation of muddy patches near river mouths is largely due to their proximity to the sediment source. Muddy patches formed in regions farther away from river mouths are results of local weak bottom stress and associated circulation pattern. Simulated seabed sediment distribution reveals that most of the Huanghe-derived sediment stays inside the Bohai Sea, whereas the Changjiang-derived sediment can spread into both the Yellow and East China Seas. Strong seasonal variations exist in the river-derived sediment transport with stronger (weaker) offshore sediment transport occurring in the winter (summer). (C) 2015 Elsevier Ltd. All rights reserved.
机译：利用海洋-大气-波浪-沉积物耦合模拟和分析了过去48年（1958-2005）渤海，黄河和东海（BYECS）的黄河和长江沉积物的海岸环流和输运运输建模系统。针对现场波和水文观测的模型技能评估表明，该模型仿真可以合理地再现BYECS的水动力环境。模型模拟的高细泥沙堆积速率高的区域与观察到的区域具有很好的相关性，这些区域被称为“泥泞斑块”。底部应力分析进一步表明，河口附近的泥泞斑块的形成在很大程度上是由于它们靠近泥沙源。在距河口较远的区域形成的泥泞斑块是局部弱底部压力和相关环流模式的结果。模拟的海底沉积物分布表明，大多数黄河源沉积物都留在渤海内部，而长江源沉积物可以扩散到黄海和东海。在河流派生的泥沙运移中存在强烈的季节性变化，而在冬季（夏季）则发生较强（较弱）的近海泥沙运移。 （C）2015 Elsevier Ltd.保留所有权利。

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