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Partitioning of grain-size components of estuarine sediments and implications for sediment transport in southwestern Laizhou Bay, China |
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| Authors: | Guangquan Chen Liang Yi Shenliang Chen Haijun Huang Yanxia Liu Yonghang Xu Jianrong Cao |
| Institution: | 12304. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China 22304. Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China 32304. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China 42304. Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China 52304. Open Laboratory of Ocean & Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, China 62304. College of Environment and Planning, Liaocheng University, Liaocheng, 252059, China |
| Abstract: | Sediment transport in estuarine systems has been of increasing interest for scientists during the past few decades. However, the mechanisms for sediment redistribution remain unclear. We characterized in detail sediment transport in the Xiaoqing River estuary using the mathematical Weibull function to partitiongrain-size components of surface sediments in the southwestern Laizhou Bay, Northeast China. Four partitioned components: finer than 4, 4.6–12.5, 23.4–63.3, and 67.1–132.6 μm were interpreted in terms of hydrodynamic conditions. During sediment transport, silt grains were suspended and moved seaward from three depositional centers, whereas fine-grained sands moved generally landward. Overall, sediments are transported clockwise in a generally NNE direction near shore and then turn eastward offshore. The mathematical partitioning method showed a great potential for future estuarine environmental studies. |
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