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Table 1

Main parameters of the interior model.

Parameter Description Value

Rp Planet radius 6370 km
Rc Core radius 3480 km
g Gravitational acceleration 9.8 m s-2
Ts Surface temperature 293 K
ΔTd Initial core-mantle temperature drop 200 K
Qm Initial mantle heat production 23 pW kg-1
ρcr Crust density 2900 kg m-3
ρm Mantle density 3500 kg m-3
cm Mantle heat capacity 1100 J kg-1 K-3
cc Core heat capacity 800 J kg-1 K-3
A Viscosity pre-factor 6.127 × 1010 Pa s
E Activation energy 3.35 × 105 J mol-1
V Activation volume 4 × 10-6 m3 mol-1
k cr Crust thermal conductivity 3 W m-1 K-1
km Mantle thermal conductivity 4 W m-1 K-1
κm Mantle thermal diffusivity 10-6 m s-2
αm Mantle thermal expansivity 2 × 10-5 K-1
Latent heat of melting 6 × 105 J kg-1
R acrit Critical Rayleigh number 450
u0 Convection velocity scale 2 × 10-12 m s-1

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