• 责任者：Sun Qi (Northwest Institute of Nuclear Technology ; Xi’an 710024 ; China) ; Yu Xiang
• 刊名：Geoscience
• 出版年：2011
• 卷期：25(6)
• 关键词：地下水补给 ; groundwater recharge ; 氚计时 ; tritium dating ; 西北地区 ; Northwest China
• 页码：p.1195-1200
• 图表：5 illus., 2 tables, 11 refs.
• 分类号：1701
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

The study area is located in the arid area in the Northwest China and two levels of water storage basins exist. The first-level basin receives the lateral recharge from the southern mountain area. Spring discharge from the first-level basin flows into and recharges the next basin, at the same time groundwater in each levels of basin receives recharge from direct precipitation and indirect infiltration of flood flow. The quantity of tritium indicates that the second-level basin is not affected by present precipitation. Using the piston model and the complete mixing model, the age of shallow groundwater in the first-level basin is estimated to range from 32 to 60 a.