RUI: Environmental Tritium Systematics Applied to the Interpretation of the Geochemical and Hydrological Dynamics of Watersheds

RUI：环境氚系统学应用于流域地球化学和水文动力学的解释

• 批准号: 9117540
• 负责人: Seth Rose
• 金额: $ 6.34万
• 依托单位: Georgia State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117540&HistoricalAwards=false
• 关键词: RUI; Environmental; Tritium; Systematics; Applied

The utilization of tritium as a hydrological tracer and as an isotopic age-constraint is becoming increasingly more difficult as tritium concentrations decrease in global precipitation. The proposed study can make an original contribution to the science of hydrology by determining if and how low concentrations of environmental tritium (0-35 tritium units) can be utilized to better understand the hydrochemical systematics of runoff generation. The proposed study will be conducted within the 190 km2 Falling Creek basin in the Piedmont Province of Georgia. This study will acquire and interpret major ion, stable oxygen isotope, and tritium data derived from precipitation, surface water (under a wide range of flow conditions), the vadose zone and the saturated zone within the Piedmont regolith. The results of this study will lead to a better understanding of (1) the rates and mechanisms of natural water movement and chemical processes within watersheds and (2) how future regional hydrological investigations may continue to utilize tritium.

随着全球降水中氚浓度的降低，利用氚作为水文示踪剂和同位素年龄限制变得越来越困难。 拟议的研究可以通过确定是否以及如何利用低浓度的环境氚（0-35氚单位）来更好地了解径流生成的水化学系统，从而对水文学做出原创性贡献。 拟议的研究将在佐治亚州皮埃蒙特省 190 平方公里的 Falling Creek 盆地内进行。 这项研究将获取并解释来自降水、地表水（在各种流动条件下）、皮埃蒙特风化层内包气带和饱和带的主要离子、稳定氧同位素和氚数据。 这项研究的结果将有助于更好地理解（1）流域内自然水运动和化学过程的速率和机制，以及（2）未来的区域水文调查如何继续利用氚。