Hydrodynamic Characteristics of Canyon Reservoir during Dry Season-A Case Study of Wujiangdu Reservoir
With the development of hydropower in the Karst area of Southwest China,a series of cascade canyon reservoirs have been formed due to the construction of dams.Given that hydrodynamic conditions in those canyon reservoirs play a pivotal role in controlling the spatiotemporal distributions of physical and chemical properties of the stored water,understanding the hydrodynamic characteristics of canyon reservoirs is thus of great importance for studying the biogeochemical cycles in those reservoirs.To this end,a field campaign was conducted in the Wujiangdu reservoir,located in Guizhou Province.It was found that from the reservoir inlet to the front of the dam,velocity(v)was negatively correlated and a logarithm relationship with the distance along the ship track(s)under dry-season flow conditions(v =-0.104ln(s)+0.4756).Correlation analysis showed that dry-season flow velocities had no significant correlations with water temperature,pH,and dissolved oxygen(DO).However,when the velocity decreased to 0.061 m/s,the water depth increased abruptly.In addition,DO had a sudden drop and the trend in pH changed from increasing to decreasing,while water temperature showed an opposite trend from decreasing to increasing,indicating the existence of a transition zone from the river to the reservoir.
Canyon reservoir hydrodynamic characteristics a transition zone Wujiang River
Haitao Zhang Baoli Wang Qiong Han Jie Shi Xiaolong Qiu Tiejun Wang
Institute of Surface-Earth System Science,Tianjin University,Tianjin 300072,China Institute of Surface-Earth System Science,Tianjin University,Tianjin 300072,China;State Key Laborato State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Scie
国际会议
The 11th International Symposium on Geochemistry of the Earths Surface(GES-11)(第十一届地球表层地球化学国际研讨会)
贵阳
英文
1-5
2017-06-11（万方平台首次上网日期，不代表论文的发表时间）