The Environmental Isotope Markers of Groundwater Flow Patterns of the Songnen Plain
详细信息
- 责任者：Chen Zongyu (Institute of Hydrogeology and Environmental Geology ; Chinese Academy of Geological Sciences ; Zhengding 050803 ; China) ; Liu Jun
- 刊名：Earth Science Frontiers
- 出版年：2010
- 卷期：17(6)
- 关键词：地下水系统 ; groundwater system ; 同位素水文地球化学 ; isotopic hydrogeochemistry ; 松嫩平原 ; Songnen Plain
- 页码：p.94-101
- 图表：7 illus., 19 refs.
- 分类号：1701
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
Isotopic data from groundwater and surface water are used together with classical hydrogeological information to study groundwater flow pattern throughout the Song-Nen Plain. The δ18O, δD values and ages of groundwater indicate that the groundwater flow patterns are characterized by local flow systems, intermediate flow systems and regional flow systems. The depth distribution of tritium in groundwater suggests that local groundwater flow system is a modern water circulating system which penetrates by a depth of ～100 m in the piedmont and 50 m in the central plain. Regional groundwater flow system is characterized by lateral flow and occurs in deep confined aquifers. The distinction of environmental isotope characteristics around the phreatic divide between the Songnen Basin and Liaohe Basin indicates that the divide should be regarded as a zero flux boundary at the natural state.