The use of 3H and 18O tracers to characterize water inflows in alpine tunnels
作者： J.C. Maréchal , D. Etcheverry
DOI: 10.1016/S0883-2927(02)00101-4
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摘要: Abstract Water inflows in 9 tunnels and galleries through the Alpine crystalline massifs have been analysed for their 3H activities δ18O contents. Tritium provides information on water transit times dynamics of deep circulation, whereas contributes to understanding origin flow paths such mountainous regions. Owing ambiguities arising from irregularity historical input function since 1945, a unequivocal straightforward interpretation is not possible. Nevertheless, ambiguity can be resolved by considering data combination with (a) generalized hydraulic conductivity massif obtained discharge data, (b) Na silica content as an indication extent rock-water interaction. When are this way, waters that were sampled tunnels/galleries divided into 3 age groups, i.e. 40 a. In general, beneath rock-cover thickness
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