Author(s): YUE Dawei, GAO Zengwen, ZHAO Quansheng, PENG Yuchun
Pages: 40-44
Year: 2013 Issue:  4
Journal: Water Resources Protection
Keyword:  estuary reservoir; abrupt salinization; benthic boundary layer; mixing; salty pore water;
Abstract:  We explored the mechanism of abrupt salinization in estuary reservoirs by evaluating the changes of the profiles of salt concentration and the amount of salt in a water column under the conditions of abrupt disruption of stratified water in a medium-sized flume.The results show that the mixing of the salt water in the benthic boundary layer and the fresh water in the top layer leads to salinization , while the solutes released from the surficial sediments under disruption conditions are the additional sources of salt .The stratification structure and stability are distinct between the water with salinity stratification and the water with thermal stratification , leading to different mixing frequencies.We can discharge the benthic salt water to suppress the abrupt salinization during the operation of estuary reservoirs.This study may provide a theoretical and practical basis for the control of abrupt salinization in estuary reservoirs.