IMPACT OF RUNOFF ON SALT INTRUSION OF YANGTZE ESTUARY

Tilai Li, Xiangyu Gao, Xinzhou Zhang, Yinshuang Wang

Abstract


Based on one-dimensional and two-dimensional mathematical coupling models of tidal current and salinity from Datong to Yangtze estuary, the impacting scope of salt intrusion are calculated when the runoff of Datong from 4,500m3/s to 30,000m3/s, and the maximum and average value of salinity at each representative point of the estuary are given. When flow of Datong is less than 10,000 m3/s, if projects of water transfer, pumping and diversion are not taken into account at the lower reaches of Datong, the maximum salinity at the downstream reaches of Xuliujing and the average salinity at the downstream reaches of Baimaosha will exceed drinking water criteria.

Keywords


runoff; salt intrusion; Yangtze estuary; mathematical coupling model

References


Li Tilai, Gao Xiangyu, Wang Yinshuang. 2009.Impact of Changes in Runoff into the Sea on Saltwater Intrusion of Yangtze Estuary, Proceeding of 14th Chinese Coastal Engineering Conference, Huhhot, Inner Mogolia Autonomous Region, China,917 -926.

Luo Bingzheng, Sheng Huanting. 1994.The Three Gorges Project and Estuary Ecological Environment. Chinese Science Press, Beijing.

Mao Zhichang, et al. 2001. Saltwater Intrusion Patterns in the Qingcaosha Area Changjiang River Eetuary, Oceanologia Et Limnologia Sinica,Vol.32, No.1,58-66.

Song Zhirao, Mao Lihua. 2002. Study of Yangtze Estuary Saltwater Intrusion, Protection of Water Resources, No3.,27-30

Xiao Chengyou, et al. 2000.Digit Model Study of Saltwater Encroachment of the Northern Branch of Yangtze Estuary, Journal of Oceanography, 22 (5),124-132.

Zhang Erfeng, Chen Xiqing. 2001.Change of Dry Season Water Level Flow at Yangtze River Datong– Estuary Section, Journal of Geological Sciences, Vol. 2, 231-238.


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