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Figure 6 | Progress in Earth and Planetary Science

Figure 6

From: Sound velocity of hcp-Fe at high pressure: experimental constraints, extrapolations and comparison with seismic models

Figure 6

Compressional sound velocity as a function of density. Violet crossed diamonds (Crowhurst et al., 2004); blue open diamonds (Decremps et al., 2014); red open circles (Antonangeli et al., 2004b; 2012); green lined circles (Ohtani et al., 2013). The star is the ultrasonic determination reported in (Mao et al., 1998). PREM is shown as crosses. The solid line is a linear regression across all experimental data (V P = a +  where a = −4,000 ± 110 m/s and b = 1.206 ± 0.011 m4/(kg s)).

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