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Fig. 5 | Geothermal Energy

Fig. 5

From: Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

Fig. 5

Temperature profiles without correction of thermal conductivity (upper part) and temperature differences profiles (subfigures a1–c3) for scenario A (igneous section) at three different locations and for different basal heat flow in 30 km depth. Temperature differences are calculated against the uncorrected temperature profiles (relying on ambient thermal conductivities) based on different thermal conductivity (λ) correction methods: λ(maxp)—maximum of pressure (p) correction on λ only, λ(maxT)—maximum of temperature (T) correction on λ only (both as in Fig. 4); λ(p,T)—combined correction of λ by correcting firstly for p and secondly for T, λ(T,p)—combined correction of λ by correcting firstly for T and secondly for p; λ(p + T)—combined correction of λ by adding the single p/T correction effects. Correction formulas for all ways as shown in Table 2

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