Table 1 Parameters for calculation of thermal structure in Mars

Crustal density ρc (kg/m³)

2900^a

2900^a

Crustal thickness hc (km)

35^b

65^c

Crustal thermal conductivity kc (W/m K)

2.5^d

2.5^d

Mantle density ρm (kg/m³)

3300

3300

K (ppm)

3659^e

2540^e

Th (ppm)

0.69^e

0.42^e

U (ppm)

0.18^e

0.11^e

Surface temperature T ₀ (K)

155^b

220^f

Martian radius R _m (km)

3390

Core radius R _c (km)

1700^g

Surface gravity g (ms⁻²)

3.71

Gas constant R (JK⁻¹mol⁻¹)

8.3144