Impact of revised thermal stability on pollutant transport time in a deep reservoir | |
Binbin Wu; Guoqiang Wang; Hong Jiang; Jingfu Wang; Changming Liu | |
刊名 | Journal of Hydrology
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2016 | |
卷号 | 535页码:671-687 |
关键词 | Thermal Stratification revised Schmidt Stability water Age deep Reservoir three-dimensional Model |
英文摘要 | Thermal stability (Schmidt stability) and water age, which are significantly related to water quality and algae bloom in deep reservoirs, are two crucial indicators of stratification strength and pollutant transport time, respectively. Here, the original Schmidt stability, which was derived from a one-dimensional assumption, was theoretically extended to a three-dimensional water body. In addition, a three-dimensional model was verified for the case study of Hongfeng Reservoir in China based on data from 2009 and 2010. Although the revised stability was similar to the original stability of Hongfeng Reservoir, which occurred at a relatively low level, the greater stratification in other deep water bodies would enhance their difference. Air temperature and water depth were the most important factors of the temporal variation in stability and the spatial variation in stability, respectively. The pollutant transport processes in the Hongfeng Reservoir was very complex with alternate appearances of overflow, interflow and underflow, depending on the season. The spatial water age was primarily determined by the morphometry and the inflow/outflow (with the highest water age in North Lake), whereas the vertical difference in the water age among the layers was primarily controlled by thermal stratification. Negative linear relationships between the average stability and the water ages of the bottom layers in three representative sites during summer were observed. Positive linear relationships between the average stability and the water ages of the surface layers were also observed. These findings enable a better understanding of the hydrodynamic and pollutant transport processes in a deep reservoir. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/9622] ![]() |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 3.Nanjing Institute of Environmental Sciences, Ministry of Environment Protection, Nanjing 210042, China 4.College of Water Sciences, Beijing Normal University, Beijing 100875, China |
推荐引用方式 GB/T 7714 | Binbin Wu;Guoqiang Wang;Hong Jiang;Jingfu Wang;Changming Liu. Impact of revised thermal stability on pollutant transport time in a deep reservoir[J]. Journal of Hydrology,2016,535:671-687. |
APA | Binbin Wu;Guoqiang Wang;Hong Jiang;Jingfu Wang;Changming Liu.(2016).Impact of revised thermal stability on pollutant transport time in a deep reservoir.Journal of Hydrology,535,671-687. |
MLA | Binbin Wu;Guoqiang Wang;Hong Jiang;Jingfu Wang;Changming Liu."Impact of revised thermal stability on pollutant transport time in a deep reservoir".Journal of Hydrology 535(2016):671-687. |
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