文章基本信息

标题：The Sedimentary Characteristics and Sediment Transport in the Tidal Depositional System of the Eastern Bohai Sea
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作者：Jin Yuxiu ; Cao Zhimin ; Wu Jianzheng 等
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2014
卷号：13
期号：4
语种：English
出版社：Technoscience Publications
摘要：The Laotieshan Channel is one of the major channels in the north of the Bohai Strait, China. A tidal depositionalsystem shaped by strong currents has developed in the eastern Bohai Sea, consisting of the LaotieshanChannel, the Liaodong Shoal and the Bozhong Shoal. Based on the grain-size characteristics, distribution ofheavy minerals and numerical simulation results, the sediment distributions of different geomorphic unitswere analysed, and the trend of sediment transport is discussed. The results show that coarse-grainedsediment is mainly distributed in the Laotieshan Channel, and the typical sediment type is muddy sandygravel, whereas fine-grained sediment mainly covers the Liaodong Shoal and the Bozhong Shoal. Moreover,the sediments in sand ridges have a finer grain size than those in troughs. The sediment of the BozhongShoal mainly consists of muddy sand. The sediments of ridges, in contrast, are sand and silty sand; thoseof troughs are sandy silt and silty sand. The distribution of typical heavy minerals is similar to that of totalheavy minerals and areas with relatively high content occur in the sand ridge area and the sand sheet area.The Laotieshan Channel is eroded and the sediment is transported to the Liaodong Shoal and the BozhongShoal. The sediment continues to be transported northwest in the Bozhong Shoal, while in the LiaodongShoal it is transported approximately along the long axes of sand ridges. The sediment transport trends inthe tidal depositional system are adapted to the hydrodynamic environment, and the tidal geomorphologicalsystem of the Liaodong Shoal will remain stable at the century scale.