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Fig. 10 | Geothermal Energy

Fig. 10

From: Hydrochemical aspects of high-temperature aquifer storage in carbonaceous aquifers: evaluation of a field study

Fig. 10

Development of the sodium ion concentrations during stage 0 (upper left: a) and during stages 1–4 (upper right: b), calcium ion concentrations during stage 0 (middle left: c) and during stages 1–4 (middle right: d) and magnesium ion concentrations during stage 0 (bottom left: e) and during stages 1–4 (bottom right: f). The reservoir water concentration is shown as a green line and the median of the injected tap water as a blue line (25 and 75 % quantile is shown as a dashed blue line). The samples were taken at the bypass (see Fig. 2)

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