气候变化领域集成服务门户(CCPortal): Equation of State for Fe-9.0 wt% O up to 246 GPa: Implications for Oxygen in the Earth's Outer Core

CCPortal

DOI	10.1029/2020JB021056
	Equation of State for Fe-9.0 wt% O up to 246 GPa: Implications for Oxygen in the Earth's Outer Core
	Young G.; Fan L.; Zhao B.; Chen X.; Liu X.; Huang H.
发表日期	2021
ISSN	21699313
卷号	126 期号:2
英文摘要	To constrain the amount of oxygen in Earth's outer core, the equation of sate (EoS) for Fe-9 wt% O (Fe-9O) was measured up to ∼246 GPa using the dynamic compression technique. The shock velocity (Formula presented.) and particle velocity (Formula presented.) relationship can be described by (Formula presented.). Using the ideal mixing model, the isothermal equation of state for Fe-9O at 300 K was fitted to the third-order Birch-Murnaghan EoS with bulk modulus (Formula presented.) GPa and its pressure derivative (Formula presented.). Based on the EoS of Mie-Grüneisen, the calculated adiabat coincides with our experimental data when its Grüneisen parameters are given by (Formula presented.). Using the determined parameters, bulk sound velocities were obtained from the Hugoniot data. By comparing the pressure-density profiles and sound velocities of Fe-O system with the preliminary reference Earth model, it was determined that the oxygen-rich composition does not provide a good match to the observations in the Earth's outer core. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Earth core; Equation of State; Fe; FeO; light element; oxygen
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187391
作者单位	School of Sciences, Wuhan University of Technology, Wuhan, Hubei, China; Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou, China; Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie, UMR CNRS, Sorbonne Universités – UPMC, Paris, France
推荐引用方式 GB/T 7714	Young G.,Fan L.,Zhao B.,et al. Equation of State for Fe-9.0 wt% O up to 246 GPa: Implications for Oxygen in the Earth's Outer Core[J],2021,126(2).
APA	Young G.,Fan L.,Zhao B.,Chen X.,Liu X.,&Huang H..(2021).Equation of State for Fe-9.0 wt% O up to 246 GPa: Implications for Oxygen in the Earth's Outer Core.Journal of Geophysical Research: Solid Earth,126(2).
MLA	Young G.,et al."Equation of State for Fe-9.0 wt% O up to 246 GPa: Implications for Oxygen in the Earth's Outer Core".Journal of Geophysical Research: Solid Earth 126.2(2021).