Model of Water Temperature Stratification  in Xiangxi Bay of the Three Gorges Reservoir with Different Density Currents

LIU Jin-gao; XU Ya-qian; MA Jun; LIU De-fu; YANG Zheng-jian

doi:10.11988/ckyyb.20161150

PDF(3444 KB)

Journal of Changjiang River Scientific Research Institute ›› 2018, Vol. 35 ›› Issue (4) : 37-42. DOI: 10.11988/ckyyb.20161150

WATER RESOURCES AND ENVIRONMENT

Model of Water Temperature Stratification in Xiangxi Bay of the Three Gorges Reservoir with Different Density Currents

LIU Jin-gao^1,2, XU Ya-qian^1,2, MA Jun^1,2, LIU De-fu^1,2, YANG Zheng-jian^1,2

Author information +

History +

Abstract

After the impoundment of the Three Gorges Reservoir, the hydrodynamics of branch bay together with the distribution of water temperature in vertical direction has changed. To investigate into the distribution of water temperature in the presence of different types of density current, we monitored the water temperature in-situ in different sections of the Xiangxi Bay, and established a hydrodynamic model (CE-QUAL-W2). We conclude that the main hydrodynamic conditions and water temperature distribution in normal periods of reservoir operation vary correspondingly: in discharge period, backward density current at surface layer is the major hydrodynamic pattern with conventional water temperature distribution; in flood season at low water level, backward density current at middle layer is the major hydrodynamic pattern, with water temperature distributes in double mixing-thermocline type; while in storage period, backward density current at bottom layer is the dominant hydrodynamic pattern, with the water temperature distributes in a half-U shape. The research results offer theoretical and technical support for revealing the water temperature distribution and nutrients transport as well as forecasting water bloom in the Xiangxi Bay.

Key words

Three Gorges Reservoir (TGR) / Xiangxi Bay / different density current / CE-QUAL-W2 / thermal stratification

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

LIU Jin-gao, XU Ya-qian, MA Jun, LIU De-fu, YANG Zheng-jian. Model of Water Temperature Stratification in Xiangxi Bay of the Three Gorges Reservoir with Different Density Currents[J]. Journal of Changjiang River Scientific Research Institute. 2018, 35(4): 37-42 https://doi.org/10.11988/ckyyb.20161150

References

[1] 许涛, 王雨春, 刘德富, 等. 三峡水库香溪河库湾夏季水华调查[J]. 生态学杂志, 2014,33(3):646-652.
[2] 蔡庆华, 孙志禹. 三峡水库水环境与水生态研究的进展与展望[J]. 湖泊科学, 2012,24(2):169-177.
[3] 王丽平, 郑丙辉, 张佳磊, 等. 三峡水库蓄水后对支流大宁河富营养化特征及水动力的影响[J]. 湖泊科学, 2012,24(2):232-237.
[4] 蒋定国, 戴会超, 王冰伟, 等. 香溪河库湾春季营养盐空间差异性成因分析[J]. 水利学报, 2013,44(5):562-569.
[5] LIU L, LIU D, JOHNSON D M, et al. Effects of Vertical Mixing on Phytoplankton Blooms in Xiangxi Bay of Three Gorges Reservoir: Implications for Management[J]. Water Research, 2012,46(7):2121-2130.
[6] 练继建, 姚烨, 马超. 香溪河春季突发水华事件的应急调度策略[J]. 天津大学学报, 2013,46(4):291-297.
[7] 熊超军, 刘德富, 纪道斌, 等. 三峡水库汛末175 m试验蓄水过程对香溪河库湾水环境的影响[J]. 长江流域资源与环境, 2013,22(5):648-656.
[8] 杨正健, 刘德富, 马骏, 等. 三峡水库香溪河库湾特殊水温分层对水华的影响[J]. 武汉大学学报(工学版), 2012,45(1):1-9.
[9] 刘流, 刘德富, 肖尚斌, 等. 水温分层对三峡水库香溪河库湾春季水华的影响[J]. 环境科学, 2012,33(9):3046-3050.
[10]杨正健, 刘德富, 纪道斌, 等. 三峡水库172.5m蓄水过程对香溪河库湾水体富营养化的影响[J]. 中国科学:技术科学, 2010,40(4):358-369.
[11]朱爱民, 李嗣新, 胡俊, 等. 三峡水库支流拟多甲藻水华的形成机制[J]. 生态学报, 2014,34(11):3071-3080.
[12]蔡庆华, 胡征宇. 三峡水库富营养化问题与对策研究[J]. 水生生物学报, 2006,30(1):7-11.
[13]田泽斌, 刘德富, 杨正健, 等. 三峡水库香溪河库湾夏季蓝藻水华成因研究[J]. 中国环境科学, 2012,32(11):2083-2089.
[14]LIU D, YANG Z, DAOBIN J I, et al. A Review on the Mechanism and Its Controlling Methods of the Algal Blooms in The tributaries of Three Gorges Reservoir[J]. Journal of Hydraulic Engineering, 2016,47(3):443-454.
[15]解河海, 张金良, 郝振纯, 等. 水库异重流研究综述[J]. 人民黄河, 2008,22(5):28-30.
[16]张小峰, 姚志坚, 陆俊卿. 分层水库异重流试验[J]. 武汉大学学报(工学版), 2011,44(4):409-413.
[17]王光谦, 方红卫. 异重流运动基本方程[J]. 科学通报, 1996,41(18):1715-1720.
[18]纪道斌, 刘德富, 杨正健, 等. 三峡水库香溪河库湾水动力特性分析[J]. 中国科学:物理学力学天文学, 2010,40(1):101-112.
[19]MA J, LIU D, WELLS S A, et al. Modeling Density Currents in a Typical Tributary of the Three Gorges Reservoir, China[J]. Ecological Modelling, 2015,296:113-125.
[20]魏玉珍. CE-QUAL-W2模型应用探讨[J]. 环境科技, 2009,22(增2):40-44.
[21]龙良红, 纪道斌, 刘德富, 等. 基于CE-QUAL-W2模型的三峡水库神农溪库湾水流水温特性分析[J]. 长江科学院院报, 2016,33(5):28-35.
[22]李艳, 邓云, 梁瑞峰, 等. CE-QUAL-W2在紫坪铺水库的应用及其参数敏感性分析[J]. 长江流域资源与环境, 2011,20(10):1274-1278.