Hydrodynamic characteristics of Wujiangdu Reservoir during the dry season-a case study of a canyon reservoir

作     者：Haitao Zhang Baoli Wang Qiong Han Jie Shi Xiaolong Qiu Tiejun Wang 

作者机构：Institute of Surface-Earth System Science Tianjin University Tianjin 300072 China State Key Laboratory of Environmental GeochemistryInstitute of Geochemistry Chinese Academy of SciencesGuiyang 550002 China University of Chinese Academy of Sciences 100049 BeijingChina 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2017年第36卷第3期

页      面：506-510页

核心收录：

学科分类：081504[工学-水利水电工程] 0709[理学-地质学] 0819[工学-矿业工程] 080103[工学-流体力学] 08[工学] 0708[理学-地球物理学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Key Research and Development Programme of China(2016YFA0601001) the National Natural Science Foundation of China(Grant Nos.U1612441 and 41473082) CAS"Light of West China"Program 

主　　题：Canyon reservoir Hydrodynamic characteristics A transition zone Wujiang River 

摘      要：With the development of hydropower in the karst area of Southwest China, a series of cascade canyon reservoirs have been formed through the construction of dams. Given that hydrodynamic conditions in canyon reservoirs play a pivotal role in controlling the spatiotemporal distribution of physical and chemical properties of the stored water, hydrodynamic characteristics are of great importance in understanding biogeochemical cycles in those reservoirs. To further this understanding, a field campaign was conducted in the Wujiangdu Reservoir of Guizhou Province. It was found that from the reservoir inlet to the front of the dam, velocity(v) was negativelycorrelated and had a logarithmic relationship with distance along the ship track(s) under dry-season flow conditions[v =-0.104 ln(s) + 0.4756]. Analysis showed that dryseason flow velocity had no significant correlation with water temperature, p H, or dissolved oxygen(DO). However, when velocity decreased to 0.061 m/s, water depth increased abruptly. In addition, DO displayed a sudden drop and the trend in p H changed from increasing to decreasing, while water temperature showed an opposite trend, indicating the existence of a transition zone from the river to the reservoir.