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- Lars Stixrude
- Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA.
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- Bijaya Karki
- Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA.
書誌事項
- 公開日
- 2005-10-14
- DOI
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- 10.1126/science.1116952
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:p>First-principles molecular-dynamics simulations show that over the pressure regime of Earth's mantle the mean silicon-oxygen coordination number of magnesium metasilicate liquid changes nearly linearly from 4 to 6. The density contrast between liquid and crystal decreases by a factor of nearly 5 over the mantle pressure regime and is 4% at the core-mantle boundary. The ab initio melting curve, obtained by integration of the Clausius-Clapeyron equation, yields a melting temperature at the core-mantle boundary of 5400 ± 600 kelvins.</jats:p>
収録刊行物
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- Science
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Science 310 (5746), 297-299, 2005-10-14
American Association for the Advancement of Science (AAAS)