气候变化领域集成服务门户(CCPortal): The Impact of Winter Storms on Sediment Transport Through a Narrow Strait, Bohai, China

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DOI	10.1029/2020JC016069
	The Impact of Winter Storms on Sediment Transport Through a Narrow Strait, Bohai, China
	Wang C.; Liu Z.; Harris C.K.; Wu X.; Wang H.; Bian C.; Bi N.; Duan H.; Xu J.
发表日期	2020
ISSN	21699275
卷号	125 期号:6
英文摘要	The Yellow River is one of the most significant sources of terrestrial sediment to the global seas, and the Bohai Strait is the only pathway that delivers Yellow River-derived sediments from the shallow Bohai Sea to the Yellow Sea. To investigate sediment transport processes through the strait under the influence of storms (strong northerly winds) that frequently occur in winter, we deployed two sets of observing platforms equipped with Acoustic Doppler Current Profilers (ADCP) and a suite of other sensors in the strait in January 2018. Aided by a system of high-resolution models, we reconstructed sediment dynamics in response to the strong northerly wind of a winter storm. Model results show that the instantaneous suspended sediment flux (SSF) is highly aligned with tidal currents, while the net sediment flux has a clear dependence on variations in exchange flow and sediment resuspension. Enhanced coastal currents, intensified wave motions, and higher suspended sediment concentrations indicate that the through-strait sediment flux during outflows is greater than during inflow conditions. Such SSF asymmetries are believed responsible for the net sediment export through the Bohai Strait in wintertime. Diagnostic analyses provided insights into the dynamic mechanisms of exchange flow variations influenced by both the strong northerly winds and the wind-triggered coastal trapped waves in the shallow, narrow strait via geostrophic effects. This study highlights the importance of storm-induced horizontal exchange processes in a coupled bay-shelf system. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Bohai Strait; coastal trapped waves; exchange flow; sediment flux
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186833
作者单位	College of Marine Geosciences, Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ocean University of China, Qingdao, China; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Virginia Institute of Marine Science, William and Mary, Gloucester Point, VA, United States; Physical Oceanography Laboratory/CIMST, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology (QNLM), Qingdao, 266100, China
推荐引用方式 GB/T 7714	Wang C.,Liu Z.,Harris C.K.,et al. The Impact of Winter Storms on Sediment Transport Through a Narrow Strait, Bohai, China[J],2020,125(6).
APA	Wang C..,Liu Z..,Harris C.K..,Wu X..,Wang H..,...&Xu J..(2020).The Impact of Winter Storms on Sediment Transport Through a Narrow Strait, Bohai, China.Journal of Geophysical Research: Oceans,125(6).
MLA	Wang C.,et al."The Impact of Winter Storms on Sediment Transport Through a Narrow Strait, Bohai, China".Journal of Geophysical Research: Oceans 125.6(2020).