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Age dating of groundwater

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Argon can be used as a tracer for age-dating glaciers, oceans, and more recently, groundwater. With a half-life of years, 39Ar fills an intermediate age range gap , years not currently covered by other common groundwater tracers. Therefore, adding this tracer to the data suite for groundwater studies provides an important tool for improving our understanding of groundwater systems. We present the methods employed for arriving at an age-date for a given sample of argon degassed from groundwater. Similar records in OSTI.
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Groundwater, Age of

Age dating of groundwater
Age dating of groundwater
Age dating of groundwater
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Radiocarbon dating groundwater - AMS lab Beta Analytic

An effective integrator of hydrologic history, isotope hydrology is a key to understanding fundamental physical, chemical, biological, and climate forcing processes occurring in a watershed. T he measurement of the concentrations of isotopes in groundwater and surface water can be incorporated into models to predict future responses of the watershed to trends in land-use change, water resource management decisions, and climate variability. Isotope methods are useful in regions where more traditional hydrologic tools such as geologic mapping of aquifer material, piezometric data, pump tests, hydraulic conductivity measurements, major ion chemistry, and hydrologic models give ambiguous results or insufficient information. Isotopes can be used to efficiently unravel water sources that have combined at the sampling location, and they can accurately determine residence time information, which has important implications for water resources management.
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Groundwater Age

The increasing national and international demand for water has led to increasing reliance on subsurface storage, both for naturally and artificially recharged water. This increased reliance on the groundwater in concert with the strict regulation on water quality has led to a need by water managers and regulators to understand:. Characterization of mean groundwater age and recharge temperature through the use of noble gas techniques provides information that is relevant to answering these questions and that is not accessible through traditional hydrogeologic approaches.
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