摘要
以吉林中部平原区为例,分析了孔隙潜水、孔隙承压水以及白垩系孔隙裂隙承压水温度的多年变化特征,并采用灰色关联度分析方法,确定了各含水层地下水温度与地下水埋深、气温、降水量之间的关联性,分析了影响其变化的主要因素。结果表明,对于3组含水层,从20世纪80年代初至2001年的近20年间,地下水温度都有不同程度的上升。对于孔隙潜水和孔隙承压水,地下水温度呈上升变化的本质原因是全球气候逐年变暖,而地下水活动和大气降水的增强起到了促进作用,特别是对孔隙承压水温度的上升作用更加明显;对于白垩系孔隙裂隙承压水,其温度呈上升变化则主要是由该含水层被普遍超采所引起的。
The perennial change characteristics of groundwater temperature in phreatic aquifer, confined aquifer and Cretaceous porous-fractured aquifer in the plain area of Central Jilin is analyzed systemically. A grey correlativity analysis method is applied to explore the affecting factors on variation of groundwater temperature. The study shows that the temperature of groundwater in the three aquifers have risen to different extent in recent twenty years. The climate warming is the governing factor on the rise of the groundwater temperature intensified by groundwater movement and precipitation, which is obvious for phreatic water and confined water. However, the governing factor on the rise of groundwater temperature of Cretaceous porous-fractured water is due to over pumping of groundwater.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2006年第1期66-72,共7页
Journal of Jilin University：Earth Science Edition
基金
吉林省科技发展重点项目(20010406)
关键词
吉林中部平原区
地下水温度
多年动态变化
影响因素
关联度分析
plain area of Central Jilin
groundwater temperature
perennial dynamic variation
affect factors
correlativity analysis
