Multi-temporal scale variations of suspended sediment transport from Yellow river estuary to open sea

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science Pub Date : 2025-09-24 DOI:10.1016/j.ecss.2025.109551

Xingmin Liu , Yue Yu , Lulu Qiao , Dehai Song , Yi Zhong , Hongan Sun , Xiaoxia Yu

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Abstract

The Bohai Sea near the Yellow River estuary is one of the highest turbidity regions in the world. Studying the suspended sediment transport processes at different time scales is of significant importance for the development of sediment dynamics and regional coastal zone management. This study based on multi-source remote sensing data and numerical simulation systems, explains the transport processes of suspended sediment at different time scales and quantitatively analyzes the contribution rates of various dynamic factors to suspended sediment output. The results show that suspended sediment in the Yellow River estuary is mainly transported seaward during the ebb tide of spring tide period, with this primarily occurring in winter and spring. From a long-term perspective, there was a significant decreasing trend in suspended sediment concentration (SSC) during the seaward transport process. The numerical experiments show that among the various dynamic factors influencing the transportation of suspended sediment from the Yellow River estuary to the open sea, wave action accounts for 38.02 %, which is greater than the tidal current (29.26 %). However, the Yellow Sea Warm Current (YSWC) is unfavorable to the transportation of suspended sediment from the Yellow River estuary outward, with a contribution rate of −3.57 %.

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黄河口向远海悬沙输运的多时间尺度变化

黄河口附近的渤海是世界上浊度最高的地区之一。研究不同时间尺度的悬沙输运过程，对于泥沙动力学的发展和区域海岸带管理具有重要意义。本研究基于多源遥感数据和数值模拟系统，解释了不同时间尺度下悬沙输运过程，定量分析了各种动力因子对悬沙输出的贡献率。结果表明：黄河口悬浮物主要在退潮和大潮期间向海搬运，主要发生在冬季和春季；从长期来看，在向海运输过程中，悬沙浓度（SSC）呈显著下降趋势。数值试验表明，在影响黄河口向外海输沙的各种动力因素中，波浪作用占38.02%，大于潮流作用（29.26%）。黄海暖流（YSWC）对黄河口向外输沙的贡献率为- 3.57%，不利于黄河口向外输沙。

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来源期刊

Estuarine Coastal and Shelf Science 地学-海洋学

CiteScore

5.60

自引率

7.10%

发文量

374

审稿时长

9 months

期刊介绍： Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.