Thermal stratification and its relationship with water quality in the typical tributary bay of the Three Gorges Reservoir

被引：9
|
作者：
Jin, Juxiang [1 ]
Wells, Scott A. [2 ]
Liu, Defu [3 ]
Yang, Guolu [1 ]
机构：
[1] Wuhan Univ, Coll Water Conservancy & Hydropower Engn, Wuhan 430072, Hubei, Peoples R China
[2] Portland State Univ, Dept Civil & Environm Engn, Portland, OR 97207 USA
[3] Hubei Univ Technol, Coll Resources & Environm Engn, Wuhan 430068, Hubei, Peoples R China
来源：
WATER SUPPLY | 2019年 / 19卷 / 03期
关键词：
Chlorophyll a; dissolved oxygen; thermal stratification; water quality; Xiangxi River; WITHDRAWAL SCHEMES; KOURIS DAM; LAKE; DEEP; CLIMATE; REGIME;
D O I：
10.2166/ws.2018.142
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effect of thermal stratification and its relationship with water quality was researched by field observation in this study. Through assessing the degree of thermal stratification by calculating the dimensionless parameter of thermal resistance to mixing (RTRM) indices from 2008 to 2010, it indicated that the water body of Xiangxi River was stratified strongly in the summer months. The analysis of the degree of thermal stratification with both the meteorological and hydrodynamic factors showed thermal stratification intensity was more sensitive to meteorological factors in Xiangxi River. Through the analysis of the relationship between thermal stratification and water quality, the results indicated that the concentration of Chlorophyll a was higher in the epilimnion affected by the thermal stratification, which could cause algal bloom. The results may further help to evaluate the thermal stratification role in eutrophication process and algal bloom formation in Xiangxi River.
引用
收藏
页码：918 / 925
页数：8
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