Table 3
Input parameters of considered test cases.
| Parameter | Reference | Case 2 | Case 3 | Case 4 | Case 5 | Case 6 | Case 7 |
|---|---|---|---|---|---|---|---|
| Qrad | 1cE | 1.5cE | 0.5cE | 1cE | 1cE | 1cE | |
| Tinit,mantle | 1800 K | 1800 K | 1800 K | 1600 K | 2000 K | 1800 K | 1800 K |
| Dinit,lith | 100 km | 100 km | 100 km | 100 km | 100 km | 50 km | 100 km |
| Δ Tcmb at the CMB | 0 K | 0 K | 0 K | 0 K | 0 K | 0 K | ΔT_cmb(Mp∕M⊕)* |
| Radial grid resolution | 25 km | 25 km | 25 km | 25 km | 25 km | 25 km | 25 km |
| Viscosity prefactor Δ η | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wet/dry solidus | dry | dry | dry | dry | dry | dry | dry |
| Pcross-over | 12 GPa | 12 GPa | 12 GPa | 12 GPa | 12 GPa | 12 GPa | 12 GPa |
| Surface temperature | 280 K | ||||||
| Particles per cell | 10 | ||||||
| Latent heat | 600 kJ kg−1 | ||||||
| Max. mantle depletion dmax | 30% | ||||||
| Amount of CO2 in melt fCO_2 | 1000 ppm | ||||||
| Extrusive volcanism fex | 10% | ||||||
| Time of evolution | 4.5 Gyr | ||||||
| Qrad | 1cE | 1cE | 1cE | 1cE | 1cE | 1cE | |
| Tinit,mantle | 1800 K | 1800 K | 1800 K | 1600 K | 1800 K | 1800 K | |
| Dinit,lith | 100 km | 100 km | 100 km | 100 km | 100 km | 100 km | |
| Δ Tcmb at the CMB | 0 K | 0 K | 0 K | 0 K | 0 K | 0 K | |
| Radial grid resolution | 10 km | 25 km | 25 km | 25 km | 25 km | 25 km | |
| Viscosity prefactor Δ η | 1 | 10 | 1 | 1 | 1 | 1 | |
| Wet/dry solidus | dry | dry | wet | wet | dry | dry | |
| Pcross-over | 12 GPa | 12 GPa | 12 GPa | 12 GPa | 8 GPa | 16 GPa | |
| Surface temperature | 280 K | ||||||
| Particles per cell | 10 | ||||||
| Latent heat | 600 kJ kg−1 | ||||||
| Max. mantle depletion dmax | 30% | ||||||
| Amount of CO2 in melt fCO_2 | 1000 ppm | ||||||
| Extrusive volcanism fex | 10% | ||||||
| Time of evolution | 4.5 Gyr | ||||||
Notes. Qrad are amounts of radioactive heat sources, Tinit,mantle is the initial upper mantle temperature, Dinit,lith is the initial lithosphere thickness, ΔTcmb is the temperature jump at the core-mantle-boundary (CMB), and Pcross-over is the density-cross-over pressure. Qrad is in units of cE, that is, the Earth-like amounts of radioactive heat sources, and represents present-day values (McDonough & Sun 1995), from which initial amounts 4.5 billions years ago are calculated. Bold values indicate a variation with respect to the reference case. * The function Δ Tcmb(Mp∕M⊕) = 1400 K (p: Mp ∕M⊕)3∕4 is taken from Stixrude (2014).
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