Based on the CFC concentration, the fraction of young groundwater in a mixture with old groundwater can be defined if the age of the young component is known. The authors argued that the ratio of [3HeJ/[3Ht] in a youn...Based on the CFC concentration, the fraction of young groundwater in a mixture with old groundwater can be defined if the age of the young component is known. The authors argued that the ratio of [3HeJ/[3Ht] in a young water is independent of its mixing with old waters. Hence, the 3H-3He can be used to determine age of the young groundwater, though mixing with old ground-water may occur. CFC concentrations are susceptible to change by mixing of young and old water. The combination of CFCs and tritium/helium can provide confidential apparent age of the young groundwater and fraction of the young water in the mixture with old groundwater.展开更多
基金This paper is financially supported by the State Key Foundation Planning Project (No. G1999043602) IAEA TC Project (No. CPR/8/011 and CPR/8/012).
文摘Based on the CFC concentration, the fraction of young groundwater in a mixture with old groundwater can be defined if the age of the young component is known. The authors argued that the ratio of [3HeJ/[3Ht] in a young water is independent of its mixing with old waters. Hence, the 3H-3He can be used to determine age of the young groundwater, though mixing with old ground-water may occur. CFC concentrations are susceptible to change by mixing of young and old water. The combination of CFCs and tritium/helium can provide confidential apparent age of the young groundwater and fraction of the young water in the mixture with old groundwater.
