含水层
地下水
地表径流
水文学(农业)
喀斯特
地质学
过程线
白云石
流域
环境科学
δ18O
降水
稳定同位素比值
矿物学
岩土工程
物理
生态学
生物
古生物学
气象学
量子力学
地图学
地理
作者
Piotr Małoszewski,W. Rauert,P. Trimborn,Andreas Herrmann,R. G. Rau
标识
DOI:10.1016/0022-1694(92)90247-s
摘要
Measurements of tritium and 18O concentrations in precipitation and runoff were used to provide further insight into the groundwater storage properties of the Wimbachtal Valley, a catchment area of 33.4 km2, extending between 636 and 2713 m a.s.l. in the Berchtesgaden Alps. The catchment includes three aquifer types: a dominant porous aquifer; a fractured dolomite; a karstic limestone aquifer. Employing a simple hydrological model, information about mean transit times of environmental tracers is derived for the groundwater runoff component and several karst springs from the application of the exponential and dispersion flow models to the isotopic input and output data. The mean transit times calculated from a dispersion model with transit times of 4.1 years for 18O and 4.2 years for tritium, which agree well, allow calculation of total (mobile + stagnant) groundwater storage volume, which is equivalent to 6.6 m of water depth. Direct runoff appears negligible as in many other cases.
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