Table 1 Elastic parameters for the outer core for EPOC-Vinet and for a Vinet EoS fit to PREM.

Molar mass is fixed in the inversion at 0.05 kg. The values in brackets encompass two-thirds of the parameter values.

EPOC-VinetPREM-Vinet
K0S (GPa)
Reference isentropic bulk modulus
67.5
(61.7–73.3)
79.7
Formula
Pressure derivative of K0S
6.12
(6.02–6.23)
5.89
ρ0 (kg/m3)
Reference molar density
6110
(6010–6210)
6210
V0 (m−3)
Reference molar volume
8.18 × 10−6
(8.05 × 10−6–8.32 × 10−6)
8.06 × 10−6