Skip to main content

Science – Society – Technology

Table 1 Values of petrophysical parameters assumed in model calculations

From: Hydrological constraints on the potential of enhanced geothermal systems in the ductile crust

Property

Value

Rock porosity (\(\phi\))

0.01

Rock density (\({\rho }_{r})\)

2700 kg m3

Thermal conductivity (\(\lambda )\)

Temperature-dependent according to Whittington et al. (2009)

Rock isobaric heat capacity (\({c}_{p,r}\))

880 J kg−1 C−1

Rock compressibility (\({\beta }_{r}\))

5 × 10–10 Pa−1

Stress exponent (\(n\))a

3.1

Activation energy (\(Q\))a

243 kJ mol−1

Flow parameter (\(A\))a

0.08

  1. aRepresentative value for upper crust from Zoback and Townend (2001)