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Table 1
Earth’s physical characteristics according to PREM.
| Property | Value |
|---|---|
| Mass | 5.974 × 1024 kg |
| Core mass fraction | 0.325 |
| Mantle mass fraction | 0.675 |
| Mean radius | 6371 km |
| Inner core radius | 1221.5 km |
| Outer core radius | 3480 km |
| Lower mantle radius | 5701 km |
| Central planet density | 13.0885 g cm−3 |
| Inner-outer core boundary density | 12.7636−12.1663 g cm−3 |
| Core-mantle boundary density | 9.9035−5.5665 g cm−3 |
| Lower-upper mantle boundary density | 4.3807−3.9921 g cm−3 |
| Core ean density | 11.000 g cm−3 |
| Mantle mean density | 4.447 g cm−3 |
| Mean density | 5.515 g cm−3 |
| Central planet pressure | 363.852 GPa |
| Inner-outer core boundary pressure | 328.851 GPa |
| Core-mantle boundary pressure | 135.751 GPa |
| Lower-upper mantle boundary pressure | 23.833 GPa |
| Inner-outer core boundary gravity | 4.4002 m s−2 |
| Core-mantle boundary gravity | 10.6823 m s−2 |
| Surface gravity | 9.8156 ms−2 |
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