期刊
EARTH AND PLANETARY SCIENCE LETTERS
卷 254, 期 1-2, 页码 227-232出版社
ELSEVIER
DOI: 10.1016/j.epsl.2006.09.046
关键词
iron; iron alloys; Earth's inner core; ab initio calculations; elastic properties
资金
- Natural Environment Research Council [NE/C519662/1, NER/O/S/2001/01227] Funding Source: researchfish
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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