Study on Characteristics and Influencing Factors of Qinghai Lake Thermocline
In June,August and September 2021,the monitoring perpendiculars were set up in Qinghai Lake,water depth and temperature were continuously monitored vertically,thermal stratification parameters were calculated,temporal and spatial variation characteristics and main influencing factors of Qinghai Lake ther-mocline were analyzed.The results showed that there were obvious differences in spatial and temporal distribution of water temperature in Qinghai Lake.The average water temperature in the vertical profile was the highest in August and the lowest in June,and the vertical temperature difference was the greatest in August.There was ob-vious thermocline in the vertical profile of the water body.There was no stratification in coastal shallow water.The vertical distribution of water temperature showed a positive temperature distribution.The depth of the ther-mocline gradually increased from June to September.The thickness and intensity of the thermocline were the highest in August,while decreased in September.During the monitoring period,the depth of the thermocline was positively correlated with transparency(r=0.801)and negatively correlated with surface water temperature(r=-0.162).Transparency and surface water temperature were important factors affecting lake thermocline.
ThermoclineVertical distributionTransparencyQinghai Lake
万方数据
维普
