Journal
EARTH AND PLANETARY SCIENCE LETTERS
Volume 254, Issue 1-2, Pages 227-232Publisher
ELSEVIER
DOI: 10.1016/j.epsl.2006.09.046
Keywords
iron; iron alloys; Earth's inner core; ab initio calculations; elastic properties
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Funding
- Natural Environment Research Council [NE/C519662/1, NER/O/S/2001/01227] Funding Source: researchfish
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Ab initio finite temperature molecular dynamics simulations have been used to calculate the elasticity of hcp-Fe, bcc-Fe, FeS and FeSi at core conditions. The calculated compressional wave velocities are in excellent agreement with the most recent experimental data. However, the calculated shear wave velocities of all phases studied are significantly higher than those inferred from seismology. This discrepancy can only be explained if the inner core is partially molten containing more than similar to 8% liquid. (c) 12006 Elsevier B.V. All rights reserved.
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