Distributional characteristics of grain sizes of surface sediments in the Zhujiang River Estuary

作者：Jiang Siyi^*; Xu Fangjian; Li Yan; Liu Xiling; Zhao Yongfang; Xu Wei

来源：Acta Oceanologica Sinica, 2014, 33(4): 30-36.

DOI：10.1007/s13131-014-0462-1

• grain size
• Zhujiang River
• sediment
• transport trend

Distributions of the parameters of sedimentary grain sizes and their correlations were studied to trace the sources of silts and their movement trends in the Zhujiang River Estuary based on the analyses of grain sizes from more than 1080 sedimentary samples. The distributions of the median diameter, public value, quartile deviation, and skewness of sediments were complex in the Zhujiang River Estuary mainly because of the impact of the matter source regions, distances from the source regions, and hydrodynamic conditions, such as waves, tidal currents, and coastal currents. Analyses of the parameters of the grain sizes for the various types of sediments showed that the distributions of the surface sediments in the Zhujiang River Estuary were controlled by many factors. Their matter sources were mainly the sediments discharged from the runoffs and ebb tidal currents, and from the open sea. The sediments mainly moved by suspension movement. The silts formed a large area of sediments with suspended fine silts in the Zhujiang River Estuary by internal adjustment transportation in the area, and moved toward the western coast of the Zhujiang River Estuary under the effect of Coriolis forces and coastal currents.

• 出版日期2014-4
• 单位中国科学院海洋研究所; 中国石油大学（北京）