Journal of Geographical Sciences >
Calculation method for sediment load in flood and nonflood seasons in the Inner Mongolia reach of the Yellow River
^{*}Corresponding author: Wu Baosheng, PhD and Professor, specialized in hydraulics and river dynamics. Email: baosheng@tsinghua.edu.cn
Author: Wang Yanjun, PhD Candidate, specialized in geomorphology and fluvial process. Email: yanjun1113@126.com
Received date: 20160101
Accepted date: 20160130
Online published: 20160615
Supported by
National Key Basic Research and Development Program of China, No.2011CB403304
National Science and Technology Supporting Plan of the Twelfth Fiveyear Plan, No.2012BAB02B02
Copyright
Based on an empirical sediment transport equation that reflects the characteristics of “more input, more output” for sedimentladen flow in rivers, a general sediment transport expression was developed, which can take into account the effects of upstream sediment input, previous cumulative sediment deposition, critical runoff for sediment initiation, and the differences in sediment particle sizes between the mainstream and tributaries. Then, sediment load equations for nonflood and flood seasons for the subreaches from Bayangaole to Sanhuhekou and from Sanhuhekou to Toudaoguai, as well as the whole Inner Mongolia reach from Bayangaole to Toudaoguai, were formulated based on data collected between 1952 and 2010. The corresponding sediment deposition and the cumulative values at each river reach were calculated using the proposed sediment transport equations for the period 1952 to 2010 according to the principle of sediment conservation. Comparisons between the calculated and measured values using the proposed sediment load equations for the subreaches and the entire reach showed that the calculated sediment load and sediment deposition and the corresponding cumulative values in the flood and nonflood seasons were in good agreement with the measured values. These results indicated that the proposed methods can be applied to calculate the sediment load and the associated sediment deposition in the flood and nonflood seasons for longterm trend analysis of sediment deposition in the Inner Mongolia reach of the Yellow River.
WANG Yanjun , WU Baosheng , ZHONG Deyu , WANG Yongqiang . Calculation method for sediment load in flood and nonflood seasons in the Inner Mongolia reach of the Yellow River[J]. Journal of Geographical Sciences, 2016 , 26(6) : 707 721 . DOI: 10.1007/s114420161294z
Figure 1 Sketch of the Inner Mongolia reach of the Yellow River 
Figure 2 Annual variations in sediment deposition in nonflood and flood seasons in different sections of the Inner Mongolia reach 
Table 1 Average sediment deposition in different sections of the Inner Mongolia reach 
Year  Period  Annual sediment deposition (10^{8} t)  

Bayangaole Toudaoguai  Bayangaole Sanhuhekou  Sanhuhekou Toudaoguai  
19521960  Nonflood season  0.079  0.052  0.028 
Flood season  0.894  0.374  0.520  
19611986  Nonflood season  0.014  0.020  0.034 
Flood season  0.048  0.112  0.160  
19872010  Nonflood season  0.130  0.100  0.030 
Flood season  0.412  0.080  0.331  
19522010  Nonflood season  0.059  0.057  0.002 
Flood season  0.325  0.040  0.285 
Figure 3 Comparison between calculated and measured sediment loads at Sanhuhekou station based on Eqs. (11) and (12) 
Figure 4 Comparison between calculated and measured sediment loads at Toudaoguai station based on Eqs. (13) and (14) 
Figure 5 Comparison between calculated and measured sediment loads at Toudaoguai station based on Eqs. (15) and (16) 
Figure 6 Comparison between calculated and measured amounts of sediment deposition in the river section from Bayangaole to Sanhuhekou (NF: in nonflood season; F: in flood season) 
Figure 7 Comparison between calculated and measured amounts of sediment deposition in the river section from Sanhuhekou to Toudaoguai 
Figure 8 Comparison between calculated and measured amounts of sediment deposition in the river section from Bayangaole to Toudaoguai 
The authors have declared that no competing interests exist.
1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 
Wu,

24 

25 

26 

27 

28 

29 

30 

31 

/
〈  〉 