Table 3 Typical parameters used in Fig. 4, which are mostly taken from Driscoll and Bercovici (2014). For the core evolution, the typical parameters can be found in Table 2
From: A coupled core-mantle evolution: review and future prospects
Symbol | Meaning | Value |
|---|---|---|
η0 | Reference viscosity | 7.0 × 1011 Pa s |
fvisc | Factor of depth change of viscosity | 10 |
E | Activation energy | 300 kJ/mol |
ρum | Density of the upper mantle | 3491 kg m−3 |
ρlm | Density of the lower mantle | 5490 kg m-3 |
Mm | Mass of the mantle | 4 × 1024 kg |
g | Gravity | 9.8 m s−2 |
αum | Thermal expansivity of the upper mantle | 3 × 10−5 K−1 |
αlm | Thermal expansivity of the lower mantle | 3 × 10−5 K-1 |
κ0 | Surface thermal diffusivity | 7 × 10−7 m2 s−1 |
cm | Heat capacity | 1250 J kg−1 K−1 |
Lm | Latent heat | 6.0 × 105 J kg−1 |
Hm | Present-day internal heating rate | 20 TW |
εerupt | Eruption rate | 1.0 |
Tsol0 | Solidus temperature at the surface | 1244.0 K |
γad,m | Adiabatic gradient of the melt | 1 K/km |
γz | Solidus gradient with the depth | 3.9 K/km |
R | Gas constant | 8.314 J K-1 mol-1 |