Research Article

Surface to Groundwater Interactions beneath the City of Berlin: Results from 3D Models

Table 1

Physical properties of the model units as used for the numerical simulations.

Geological unit
(predominant lithology)1

(W/(mK))

(W/m3)

(MJ/(m3K))

(—)

(m/s)

NeogeneHolocene to Weichselian (slightly gravelly sand)2.710.9E-061.570.321.42E-05
Eemian to Saalian (gravelly muddy sand)2.590.9E-061.580.3144.04E-06
Holstein (gravelly mud)2.170.9E-061.670.2961.91E-08
Elsterian (gravelly muddy sand)2.350.9E-061.610.3048.98E-07
Miocene (slightly gravelly muddy sand)2.471.0E-061.560.3016.88E-07

PaleogeneCottbus (slightly gravelly muddy sand)2.621.3E-061.70.3051.15E-06
Rupelian (slightly sandy mud)1.641.3E-061.810.2373.23E-08
Pre-Rupelian (slightly gravelly muddy sand)2.481.3E-061.70.2976.56E-07

Upper Cretaceous (limestone with marl)2.820.6E-062.290.114.81E-07
Lower Cretaceous (marl with claystone)2.361.5E-062.290.114.81E-07

Jurassic (claystone with silt- and sandstone)2.711.5E-062.250.1894.81E-07

TriassicKeuper (claystone with marl and gypsum)2.351.6E-062.320.1289.62E-09
Upper Muschelkalk (limestone with marl)2.31.0E-062.250.159.62E-09
Middle Muschelkalk (evaporites)2.31.0E-062.250.036Impermeable
Lower Muschelkalk (limestone with mudstone)2.31.0E-062.250.125.77E-10
Upper Buntsandstein (silt- and sandstone with rock salt and carbonates)3.01.8E-062.190.0256.44E-09
Middle Buntsandstein (sandstone with silt- and claystone)2.01.8E-062.390.1355.84E-07
Lower Buntsandstein (silt- and claystone)1.841.8E-062.390.0491.25E-09

PermianZechstein (rock salt with gypsum and carbonate)4.50.4E-061.940.005Impermeable
Sedimentary Rotliegend (claystone with silt- and sandstone)3.01.4E-062.180.0785.06E-08
Permocarboniferous (rhyolite and andesite)2.52.9E-062.60.0328.66E-10

Basement (strongly compacted clastics)2.22.8E-062.30.01Impermeable

: bulk thermal conductivity; : radiogenic heat production; : volumetric heat capacity of solid; : porosity; : hydraulic conductivity; impermeable refers to -40 m/d. Values were derived from [11, 1823] with more details about the Cenozoic in Frick et al. [9] and the pre-Cenozoic in Sippel et al. [11].