【摘要】 以吉林中部平原区为例,通过对123眼地下水观测井水温多年观测数据的整理分析,论述了孔隙潜水、孔隙承压水和白垩系孔隙裂隙承压水温度的多年变化特征.采用灰色关联度分析法分析了影响地下水温度变化的主要因素,计算了各含水层地下水温度与地下水埋深、气温、降水量之间的关联度.研究结果表明,从20世纪80年代初到2001年的20 a间,3个含水层的地下水温均呈上升趋势.各含水层水温上升的主要因素不同,孔隙潜水和孔隙承压水温度上升变化的主要原因是全球气候变暖;白垩系孔隙裂隙承压水温度上升则主要是由该含水层被强烈开采、水位大幅下降、上部潜水补给作用加剧所致.更多还原

【Abstract】 The perennial characteristics of groundwater temperature in phreatic aquifer,porous confined aquifer and cretaceous porous-fractured confined aquifer in plain area in central Jilin are analyzed from 123 wells.Grey scale correlativity analysis is applied to explore factors affecting variations in groundwater temperature.The study shows that groundwater temperature in the three aquifers have arisen to different extents in the last twenty years,from early 1980s to 2001.Global warming is the governing factor for the rise of groundwater temperature in phreatic water and porous confined water.However,the governing factor for the rise of groundwater temperature in cretaceous porous-fractured confined water is due to over-pumping of groundwater which induces groundwater level severe drawdown and phreatic water down leakage.更多还原