Monitoring and analysis of vertical thermal structure of the Three Gorges Reservoir

摘要: Water temperature plays a crucial role in water ecological environment both the reservoir and downstream area. Three Gorges Project (TGP) is largest hydraulic engineering world, changes of quality attract much more attention, especially thermal structure since impoundment. In order to clearly understand distribution after impoundment Reservoir (TGR), we monitored Taipingxi section which was not far from dam early April end July. According analyzing monitoring data transverse vertical variation, could find that mixed uniformly direction. Excepting April, there basically had no difference direction, even maximum only 1.39°C within 100 meters (April 22), average gradient 0.014°C/m; Both atmosphere have similar variation tendency, but response delayed, bottom temperature. The result indicate has during phase, so release little change impoundment, work provide scientific basis for development pollution control protection measure.