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DOI | 10.1002/2016GL071109 |
The influence of carbon on the seismic properties of solid iron | |
Caracas, Razvan | |
2017 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | The mechanical properties of C-doped hexagonal close-packed (hcp) iron are studied at high pressure from first-principles calculations. The energy required for doping with C as an interstitial impurity is 246meV/1wt%C at 120GPa for one unit cell of hcp Fe and increases almost linearly with pressure. The density deficit of the inner core can be matched for 1 to 2.5wt% in hcp Fe, depending on the thermal profile. Carbon doping in hcp iron increases the compressional seismic wave velocity, decreases the shear wave velocity, while increasing the shear wave splitting and seismic anisotropy. In general, the presence of C in the inner core helps in explaining the observed seismic properties, though it cannot be considered the only light element. |
英文关键词 | inner core iron light elements carbon seismic anisotropy |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393954900016 |
WOS关键词 | EARTHS INNER-CORE ; FE-C SYSTEM ; SOUND-VELOCITY ; LIGHT-ELEMENTS ; HIGH-PRESSURES ; CARBIDE FE3C ; OUTER CORE ; STATE ; CONSTRAINTS ; ELASTICITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27122 |
专题 | 气候变化 |
作者单位 | Univ Claude Bernard Lyon 1, CNRS, UMR 5672, Lab Geol Lyon,Ecole Normale Super Lyon, Lyon, France |
推荐引用方式 GB/T 7714 | Caracas, Razvan. The influence of carbon on the seismic properties of solid iron[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(1). |
APA | Caracas, Razvan.(2017).The influence of carbon on the seismic properties of solid iron.GEOPHYSICAL RESEARCH LETTERS,44(1). |
MLA | Caracas, Razvan."The influence of carbon on the seismic properties of solid iron".GEOPHYSICAL RESEARCH LETTERS 44.1(2017). |
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