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Mathematical Models in Isotope Hydrogeology by Iaea

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Hydrol. 27 (1975) 85-133. IAEA, Tech. Rep. , 96, 117, 129, 147, 129, 147, 165, 192, 206, 264, 311, 331 (yearly means up to 1987 are given) IAEA, Vienna (newer data are available on diskettes only). Appl. Radiat. Isot. 24 (1973) 253-270. Eng. J. 14 (1974) 91-99. , Estimation of the tritium input function with the aid of stable isotopes, Catena 11 (1984) 105-114. , Determination of groundwater ages by the T-3He method, Geochemistry International 6 (1969) 810-811. , "The tritium/helium-3 method in hydrology", Isotope Hydrology 1978, IAEA, Vienna, 917-930.

3 km2) in the Danube River near Passau [54]. In Fig. 11 a schematic presentation of flow pattern and its lumped-parameter model is shown. The portion of the river water (p) was calculated from the mean tracer contents applying the following formula: p = fs™0 [_ x - S180 l/fs 18 0 owj' ^ d - 6180 ] owj (28) where subscripts are as follows: x is for the wells on the island, d is for the Danube water, and ow is for the observation well (see Fig. 13). Due to the seasonal variations of the Danube water, the water exploited in the island has also variable isotopic composition.

Environ. Int. 2 (1979) 139-143. , "Radioactive noble gases in the terrestrial environment" Handbook of Environmental Isotope Geochemistry, Vol. ), Elsevier, Amsterdam (1986) 481-506. [35] WEISS, W. , SARTORIUS, H. , "Global distribution of atmospheric Kr-85: A database for the verification of transport and mixing models", Isotopes of Noble Gases as Tracers in Environmental Studies, IAEA (1992) 29-63. 52 [36] ROZANSKI, K. , FLORKOWSKI, T. , "Krypton-85 dating of groundwater", Isotope Hydrology 1978, Vol.

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