On the interpretation of tritium ‘age’ measurements of groundwater
On the interpretation of tritium ‘age’ measurements of groundwater
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DOI：
10.1029/jz069i012p02589
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发表时间：
1964-06
影响因子：
--
通讯作者：
A. Nir
中科院分区：
文献类型：
--
作者：
A. Nir
本文根据天然氚的测量结果，并考虑含水层的水动力弥散系数，导出了地下水渡越时间的方程。该方程与基于“活塞流”和完全混合模型的方程进行了比较。给出了几种近似，并指出了它们对无量纲参数τ和K的各种值的有效性。它表明，活塞流的解决方案是一个令人满意的近似这个方程在许多常见的条件下。讨论了该解的有效性条件及其水文地质意义。
An equation for the transit time of groundwater, based on natural tritium measurements and with consideration of the hydrodynamic dispersion coefficient of the aquifer, is derived. This equation is compared with equations based on the ‘piston flow’ and complete mixing models. Several approximations are given, and their validity is indicated for various values of the nondimensional parameters τ and K. It is shown that the piston flow solution is a satisfactory approximation to this equation under many commonly encountered conditions. The conditions of validity of this solution and its geohydrological significance are discussed.