Dating groundwater with dissolved silica and CFC concentrations in crystalline aquifers
作者: Jean MarçaisAlexandre GauvainThierry LabasqueBenjamin W. AbbottGilles PinayLuc AquilinaFrançois ChabauxDaniel VivilleJean-Raynald de Dreuzy
作者单位: 1Agroparistech, 75005 Paris, France
2Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France
3Brigham Young University, Provo, UT, United States
4RiverLy-Irstea, Lyon, 5 rue de la Doua, 69616 Villeurbanne cedex, France
5Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), CNRS, Université de Strasbourg, 67084 Strasbourg Cedex, France
刊名: Science of the Total Environment, 2018, Vol.636 , pp.260-272
来源数据库: Elsevier Journal
DOI: 10.1016/j.scitotenv.2018.04.196
关键词: Silicate weathering ratesGroundwater residence timeGroundwater ageLumped parameter modelAtmospheric anthropogenic tracers (CFCs)Shallow aquifer
英文摘要: Abstract(#br)Estimating intermediate water residence times (a few years to a century) in shallow aquifers is critical to quantifying groundwater vulnerability to nutrient loading and estimating realistic recovery timelines. While intermediate groundwater residence times are currently determined with atmospheric tracers such as chlorofluorocarbons (CFCs), these analyses are costly and would benefit from other tracer approaches to compensate for the decreasing resolution of CFC methods in the 5–20 years range. In this context, we developed a framework to assess the capacity of dissolved silica (DSi) to inform residence times in shallow aquifers. We calibrated silicate weathering rates with CFCs from multiple wells in five crystalline aquifers in Brittany and in the Vosges Mountains...
全文获取路径: Elsevier  (合作)
影响因子:3.258 (2012)

  • crystalline 晶质的
  • silica 硅土
  • parameter 参数
  • residence 常驻
  • CFC Channel Flow Control
  • anthropogenic 人为的
  • groundwater 潜水
  • dissolved 溶解的
  • aquifer 含水层
  • concentrations 浓聚物