Numerical Study on the Difference in Geomorphic Dynamics between Current and Abandoned Estuarine Coasts of the Yellow River Delta
Numerical Study on the Difference in Geomorphic Dynamics between Current and Abandoned Estuarine Coasts of the Yellow River Delta
复制标题
黄河三角洲现流河口岸与废弃河口岸地貌动力学差异的数值研究
DOI：
10.2112/si99-033.1
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发表时间：
2020-03
影响因子：
--
通讯作者：
Wang Qing
中科院分区：
文献类型：
--
作者：
Dong Cheng;Zhan Chao;Lin Zeng;Yi Feng;Zhu JinIin;Shi Hongyuan;Wang Qing
摘要：Zhan，C.; Lin，Z.; Yi，F.; Zhu，J.;施，H.，和Wang，Q.，2020.黄河三角洲现状海岸与废弃海岸地貌动力学差异的数值研究。In：Zheng，C.W.;王，Q.; Zhan，C.，和Yang，S.B.（编辑），海上和极地丝绸之路的海气相互作用和海岸环境。《海洋研究杂志》，特刊第99期，页。227-235.椰子溪（佛罗里达），ISSN 0749-0208。波浪是黄河三角洲河口海岸景观形成的重要驱动因子。波浪动力学的变化会影响地貌的演变，造成沿海地区之间的侵蚀或堆积。基于Delft 3D软件，模拟了不同海水条件下黄河悬沙浓度的变化。根据悬沙浓度（Di）的差异，定量研究了长江口清水沟航道现状口与废弃口的海洋动力差异，揭示了不同时期潮流和波浪对长江口演变的塑造作用。结果表明，在不同时段的多种泥沙和来流条件下，废弃河口及其近岸海域的DI值普遍较高且为正值，表明废弃河口海岸动力以波浪为主。但在目前的河口，DI值的分布一般是负的，表明目前的河口海岸动力是由潮流主导。在废弃的河口，波浪重新启动并重新悬浮沉积的泥沙和粘土，它们被潮流从海岸带走，从而造成海岸侵蚀。但由于目前河口大量泥沙快速输入，潮流无法将其全部搬运;河口及沿岸沿着两侧发生淤积，将河口延伸入海。相比之下，波浪对废弃河口的地貌影响较强，而对现状河口的影响相对较弱。这些研究成果对认识长江三峡动力地貌的演化机制具有重要的理论价值。
ABSTRACT Dong, C.; Zhan, C.; Lin, Z.; Yi, F.; Zhu, J.; Shi, H., and Wang, Q., 2020. Numerical study on the difference in geomorphic dynamics between current and abandoned estuarine coasts of the Yellow River Delta. In: Zheng, C.W.; Wang, Q.; Zhan, C., and Yang, S.B. (eds.), Air-Sea Interaction and Coastal Environments of the Maritime and Polar Silk Roads. Journal of Coastal Research, Special Issue No. 99, pp. 227–235. Coconut Creek (Florida), ISSN 0749-0208. Waves are the important driving factors that shape the estuary and coastal landscape of the Yellow River Delta (YRD). Changes in wave dynamics can affect the evolution of landforms, causing erosion or accumulation between coastal areas. In this study, the variation in suspended sediment concentration in the Yellow River under different seawater conditions is simulated based on the Delft3D. Quantitative study of the difference in ocean dynamics between the current estuary and abandoned estuary of the Qingshuigou channel in the YRD is conducted based on the difference in suspended sediment concentrations (Di), which revealed the shaping effect of tidal currents and waves in the evolution of the YRD during different periods. The results show that under multiple sediment and inflow conditions during different periods, the Di-value of the abandoned estuary and its nearshore area is generally high and positive, which indicates that the coastal dynamics of the abandoned estuary are dominated by waves. However, the distribution of Di-value in the current estuary is generally negative, indicating that the coastal dynamics of the current estuary are dominated by tidal currents. In the abandoned estuary, waves restarted and resuspended the deposited silt and clay, and they were moved away from the coast by tidal current, thus causing coastal erosion. However, due to the rapid input of a large amount of sediment in the current estuary, the tidal current could not move all of it; deposition occurred in the estuary and along both sides of the coast, extending the estuary into the sea. By comparison, the waves have a strong geomorphological effect on the abandoned estuary but are relatively weak in the current estuary. These findings have important theoretical value for understanding the evolutionary mechanism of dynamic geomorphology in the YRD.
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DOI：
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发表时间：
2006
期刊：
Journal of Sediment Research
影响因子：
--
作者：
Bi Nai-shuang
通讯作者：
Bi Nai-shuang
影响因子：
2.8
作者：
Zuosheng Yang;Youjun Ji;N. Bi;K. Lei;Houjie Wang
通讯作者：
Zuosheng Yang;Youjun Ji;N. Bi;K. Lei;Houjie Wang
黄河三角洲前缘至前三角洲现代沉积物特征及堆积速率
影响因子：
2.1
作者：
Zhou Liangyong;Liu Jian;Yoshiki Saito;Gao Maosheng;Diao Shaobo;Qiu Ji;ong;Pei Shaofeng
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Pei Shaofeng
DOI：
10.3390/rs10040602
发表时间：
2018-04
期刊：
Remote. Sens.
影响因子：
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作者：
F. D. Mendoza;S. Bonamano;R. Martellucci;C. Melchiorri;Natalizia Consalvi;V. Piermattei;M. Marcelli
通讯作者：
F. D. Mendoza;S. Bonamano;R. Martellucci;C. Melchiorri;Natalizia Consalvi;V. Piermattei;M. Marcelli
影响因子：
2.8
作者：
L. Boudet;F. Sabatier;O. Radakovitch
通讯作者：
L. Boudet;F. Sabatier;O. Radakovitch