Journal of Geographical Sciences, Volume. 30, Issue 5, 823(2020)
Analysis of critical river discharge for saltwater intrusion control in the upper South Branch of the Yangtze River Estuary
Fig. 1. Sketch of the Yangtze River Estuary displaying the location of measuring stations
Fig. 2. Correlation between the daily mean tidal ranges of Xuliujing and Qinglonggang stations
Fig. 3. Chlorinity of Dongfengxisha observation point, discharge at Datong station and tidal ranges at Xuliujing station in the dry seasons of 2009-2014
Fig. 4. Relationship between the discharge at Datong station and the tidal range at Xuliujing station (Red line across the data points represents the trend line between the two variables.)
Fig. 5. Relationship between lunar calendar date and daily mean tidal range at (a) Xuliujing station and (b) Qinglonggang station (Curves of different colors represent different tidal range estimation modes.)
Fig. 6. Characteristics of river discharge at Datong station in dry seasons of three different periods: (a) multi-year average monthly discharge; (b) the maximum and the minimum discharge in every month (Total height represents the maximum value of each month. Colored fill portion represents the minimum value of each month. Red represents the period of 1950-2002, brown represents the period of 2003-2007, blue represents the period of 2008-2017)
Fig. 7. Characteristics of saltwater intrusion under different river discharges: (a) relationship between daily discharge at Datong station and daily chlorinity at the Dongfengxisha observation point, (b) probability of chlorinity exceeding the drinking water standard in each discharge interval, and (c) the discharge at Datong station
Fig. 8. Tidal range of Xuliujing station
Fig. 9. Accumulative frequency of the tidal range of Xuliujing station
Fig. 10. Comparison of the measured and calculated salinity values using different empirical models
Fig. 11. Calculated chlorinity processes of the Dongfengxisha observation point under different river discharges (
Data sources
Data sources
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Selected empirical models for salinity prediction in the upper South Branch of the Yangtze River Estuary
Selected empirical models for salinity prediction in the upper South Branch of the Yangtze River Estuary
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Frequency of daily discharge at Datong station in different periods
Frequency of daily discharge at Datong station in different periods
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Statistical features of certain saltwater intrusion events in the upper South Branch of the Yangtze River Estuary in recent decades
Statistical features of certain saltwater intrusion events in the upper South Branch of the Yangtze River Estuary in recent decades
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Corresponding tidal ranges of Xuliujing station (∆Hc) and discharges of Datong station (Qc) to maintain the drinking water standard
Corresponding tidal ranges of Xuliujing station (∆Hc) and discharges of Datong station (Qc) to maintain the drinking water standard
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Determination coefficient between measured and calculated salinity using different tidal range estimation modes and different empirical salinity prediction models
Determination coefficient between measured and calculated salinity using different tidal range estimation modes and different empirical salinity prediction models
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Critical discharges calculated using different empirical models
Critical discharges calculated using different empirical models
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Zhaohua SUN, Jiewei FAN, Xin YAN, Cuisong XIE. Analysis of critical river discharge for saltwater intrusion control in the upper South Branch of the Yangtze River Estuary[J]. Journal of Geographical Sciences, 2020, 30(5): 823
Category: Research Articles
Received: Dec. 2, 2019
Accepted: Jan. 22, 2020
Published Online: Sep. 30, 2020
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