Journal of Geographical Sciences >
Suspended sediment load in the turbidity maximum zone at the Yangtze River Estuary：The trends and causes
Received date: 2013-08-30
Revised date: 2013-09-20
Online published: 2014-02-15
Supported by
Fund from the Ministry of Science and Technology of China, No.2010CB429002
Based on the analysis of suspended sediment elements at estuaries, influence of human activities and estuarine regulation projects on the turbidity maximum zone was studied according to the measurement data between 1959 and 2011. It was found that human activities had little effect on the seaward water while the sharp decrease of sediment volume and concentration in runoff led to the sharp decrease of turbidity maximum zone in the estuary. The concentration at outside sea and Hangzhou Bay did not change, and that along the Subei coast also decreased a little, which had no influence on the turbidity maximum zone. Compared with the concentration between 1959 and 1999, the peak of concentration moved upstream in the estuary, and the concentration in 2000-2009 decreased by about 24.73% with a narrower variation range along the river to the sea. The suspended sediment concentration in North Passage was low in upstream and downstream because of the decrease of seaward sediment and coarsening of bed material, while it was relatively high in the middle due to the influence of sediment cross the north jetty.
YANG Yunping, LI Yitian, SUN Zhaohua, FAN Yongyang . Suspended sediment load in the turbidity maximum zone at the Yangtze River Estuary：The trends and causes[J]. Journal of Geographical Sciences, 2014 , 24(1) : 129 -142 . DOI: 10.1007/s11442-014-1077-3
Blake A C, Kineke G C, Milligan T G et al., 2001. Sediment trapping and transport in the ACE Basin, South Carolina. Estuaries, 24(5): 721-733.
Chen Xiqing, Lv Xixi, Yan Yixin et al., 2008. Long-term changes and causes of the grain size bottom sediment at landward limit of the Yangtze Estuary. Resources and Environment in the Yangtze Basin, 17(4): 598-605.
Dai Shibao, Liu X X, Yang Shilun et al., 2008. A preliminary estimate of human and natural contribu-tions to the decline in sediment flux from the Yangtze River to the China Sea. Quaternary International, 186: 43-54.
Dai Shibao, Yang Shilun, Li Ming, 2009. The sharp decrease in suspended sediment supply from China's rivers to the sea: Anthropogenic and natural causes. Hydrological Sciences Journal, 54(1): 134-146.
Dai Zhijun, Han Zhen, Yun Caixing, 2005. Grainsized characteristics and transport trends of the sediment in the south channel of the Yangtze River. Transaction of Oceanology and Limnology, (2): 72-77. (in Chinese)
Dyer K R, 1995. Sediment transport processes in estuaries. In: Perillo G M E. Geomorphology and Sedimentology of Estuaries. Netherlands: Elsevier Science Publishers B V: 423-449.
Gao Jianhua, Wang Yaping, Pan Shaoming et al., 2008. Distribution of organic carbon in sediments and its influences on adjacent sea area in the turbidity maximum of Changjiang Estuary in China. Acta Oceanologica Sinica, 27(4): 83-94.
He Chao, 2007. Comparison study of suspended sediment distribution in the Yangtze Estuary's adjacent sea area in recent 20 years
[D]. Shanghai: East China Normal University, 32-42. (in Chinese)
Jiang Chenjuan, de Swart, Huib E, Li Jiufa, 2013. Mechanisms of a long-channel sediment transport in the North Passage of the Yangtze Estuary and their response to large-scale interventions. Ocean Dynamics, 63(2/3): 283-305.
Jin Miu, Yu Zhiying, He Qing, 2006. On the relationship between maintenance conditions of Yangtze Estuary deep-water channel and water & sediment transport from the valley. Port & Waterway Engineering, (3): 46-51. (in Chinese)
Li Peng, 2012. Variations in estuarine and coastal suspended sediment concentration and delta accre-tion/erosion in response to decline in sediment supply from the Yangtze River
[D]. Shanghai: East China Normal University, 70-80. (in Chinese)
Li Peng, Yang Shilun, Milliman J D et al., 2012. Spatial, temporal, and human-induced variations in suspended sediment concentration in the surface waters of the Yangtze Estuary and adjacent coastal areas. Estuaries and Coasts, 35: 1316-1327.
Liu Gaofeng, Zhu Jianrong, Wang Yuanye, 2011. Tripod measured residual currents and sediment flux: Impacts on the silting of the deep-water navigation channel in the Changjiang Estuary. Estuarine, Coastal and Shelf Science, 93(S3): 192-201.
Liu Hong, He Qing, Wang Ya et al., 2012. Processes of suspended sediment mixture in the Yangtze River Estuary. Acta Geographica Sinica, 67(9): 1269-1281. (in Chinese)
Liu Hong, He Qing, Meng Yi et al., 2007a. Characteristics of surface sediment distribution and its hydrodynamic responses in the Yangtze River Estuary. Acta Geographica Sinica, 62(1): 81-92. (in Chinese)
Liu Hong, He Qing, Wang Yuanye et al., 2007b. Temporal and spatial characteristics of surface sediment grain-size distribution in Changjiang Estuary. Acta Sedimentologica Sinica, 25(3): 445-455. (in Chinese)
Liu Jie, Chen Jiyu, Xu Zhiyang, 2008. River-bed evolution in the braided reach of the south and north passage after implementing Yangtze estuary deep water navigational improvements. Advances in Water Science, 19(5): 605-612. (in Chinese)
Liu Meng, Wu Hualin, Li Weihua et al., 2011. Observational study on flow and sediment transport overtopping the south leading jetty in the Yangtze Estuary Deep-water Channel Regulation Project. The Ocean Engineering, 29(2): 129-134. (in Chinese)
Lou Fei, Yu Zhiying, He Qing, 2003. Distribution characteristics of channel and shoal sediment and its affecting factors after the first phase of the Changjiang River Estuary North Channel Project. Advances in Marine Science, 23(2): 183-189. (in Chinese)
Lu Bing, 2012. Research on the Yangtze Estuary changes under the impacts of human activities based on remote sensing
[D]. Shanghai: East China Normal University, 27-42. (in Chinese)
Ma F K, Jiang C B, Rauen W B et al., 2009. Modeling sediment transport processes in a macro-tidal estuary. Science in China Series E: Technological Sciences, 52(11): 3368-3375.
Shen Huanting, 1988. Tendency of studies on estuarine hydrology in foreign countries. Acta Geo-graphica Sinica, 43(3): 274-280. (in Chinese)
Shen Zhiliang, Zhou Shuqing, Pei Shaofeng, 2008. Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang Estuary. Estuarine, Coastal and Shelf Science, 78: 481-492.
Shi Zhong, 2004. Behavior of fine suspended sediment at the North Passage of the Changjiang Estuary, China. Journal of Hydrology, 293: 180-190.
Uncle R J, Bloomer N J, 2000. Seasonal variability of salinity, temperature, turbidity and suspended chlorophyll in the Tweed Estuary. The Science of the Total Environment, 252(251): 115-124.
Wu Hualin, Shen Huanting, Yan Yixin et al., 2006. Preliminary study on sediment flux into the sea from Changjiang Estuary. Journal of Sediment Research, (6): 75-81. (in Chinese)
Wu Jiaxue, Liu James T, Wang Xia, 2011. Sediment trapping of turbidity maxima in the Changjiang Estuary. Marine Geology, 301-306: 14-25.
Yang Yunping, Li Yitian, Han Jianqiao et al., 2012. Variation of tide limit and tidal current limit in Yangtze Estuary and its impact on projects. Journal of Sediment Research, (5): 46-51. (in Chinese)
Yu Xin, Du Jiabi, Gao Jianhua et al., 2012. The influence of hydrodynamic characteristics on the distribution of chlorophy ll concentration in the maximum turbidity of the Yalu Estuary. Acta Oceanologica Sinica, 34(2): 101-113. (in Chinese)
Yun Caixing, 2010. The Evolution of the Mouth of the Yangtze River. Beijing: China Ocean Press, 65-87. (in Chinese)
Zhai Xiaoming, 2006. Elementary discussion of hydrodynamic and suspended sediment distribution characteristic in the Yangtze Estuary
[D]. Shanghai: East China Normal University, 51-85. (in Chinese)
Zhang Zhen, Yang Shilun, Li Peng, 2010. Quantifying the influence of Water Impoundment Phases I and II of the Three Gorges Reservoir on downstream suspended sediment flux. Acta Geographica Sinica, 65(5): 623-631. (in Chinese)
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