Influence of a water regulation event on the age of Yellow River water in the Bohai |
| |
| Authors: | Zhen Li Haiyan Wang Xinyu Guo Zhe Liu Huiwang Gao Guiling Zhang |
| |
| Institution: | 1.Key Laboratory of Marine Environment and Ecology (Ocean University of China),Ministry of Education,Qingdao,P. R. China;2.National Marine Environmental Forecasting Center,SOA,Beijing,P. R. China;3.Center for Marine Environmental Studies,Ehime University,Matsuyama,Japan;4.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education,Ocean University of China,Qingdao,P. R. China |
| |
| Abstract: | Abrupt changes in freshwater inputs from large rivers usually imply regime shifts in coastal water environments. The influence of a water regulation event on the age of the Yellow River water in the Bohai was modeled using constituent-oriented age and residence time theory to better understand the change in the environmental function of the hydrodynamic field owing to human activities. The water ages in Laizhou Bay, the central basin, and the Bohai strait are sensitive to water regulation. The surface ages in those areas can decrease by about 300 days, particularly in July, and the age stratification is also strengthened. A water regulation event can result in declines in the water age in early July ahead of declines in the water age under climatological conditions (without the regulation event) by about 1 and 5 months in the central basin and Laizhou Bay, respectively. The change in the coastal circulation due to the water regulation event is the primary reason for the change in the Yellow River water age. The high Yellow River flow rate can enhance the density flow and, therefore, reduce the age of the Yellow River water. The subsequent impact of a single water regulation event can last about 1.0 to 4.0 years in different subregions. |
| |
| Keywords: | |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
|
