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Popp, A*; Brennwald, M; Kipfer, R: Noble gases in groundwater research
Poster, IBP PhD Congress, Zurich: 2016-04-01

Abstract:
During a 27-day groundwater pumping test,we investigated water mixing between young and old groundwater with the help of an on- site mass spectrometry system that quasi-continuously measures dissolved (noble) gases in water. At the study site groundwater is artificially recharged. Our hypothesis is that intensive pumping leads to an inflow of older and potentially contaminated groundwater from deeper aquifers into the upper aquifer which is being used to produce drinking.First results show that the pumped water has a higher share of old water compared to water from neighboring wells. However, this mixing ratio does not significantly change over the duration of the pumping test. Hence, intensive pumping does not increase the inflow of deep and potentially contaminated groundwater.

last modified 2016-11-23