气候变化领域集成服务门户(CCPortal): The Fate of Liquids Trapped During the Earth's Inner Core Growth

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DOI	10.1029/2019GL085654
	The Fate of Liquids Trapped During the Earth's Inner Core Growth
	Lasbleis M.; Kervazo M.; Choblet G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	The growth history of the inner core is inherently linked to the thermal history of the Earth. The crystallization of the inner core may have been delayed by supercooling and gone through an initial phase of fast growth after the nucleation barrier has been passed, but so far no evidence or constraint has been proposed to time this possible event. With two-phase flow dynamics, we explore the effect of different growth scenarios for the inner core to determine their effects on its liquid fraction structure. Seismic observations on the melt fraction inside the inner core at present limit the porosity to a maximum of 10% of liquid. Our model provides constraints for the delay in nucleation compared to the time where the first crystal may have started to nucleate, and we find that the supercooling cannot have exceeded 100 K. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Compaction; Crystallization; Liquids; Nucleation; Supercooling; core; Earth's inner cores; Growth history; Inner core; Liquid fraction; Nucleation barrier; Seismic observation; Thermal history; Two phase flow; compaction; crystallization; inner core; observational method; supercooling; two phase flow
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170830
作者单位	Laboratoire de Planétologie et Géodynamique, LPG, UMR 6112, CNRS, Université de Nantes, Université d'Angers, France; Earth-Life Science Institute, Tokyo Institute of Technology, Meguro, Japan
推荐引用方式 GB/T 7714	Lasbleis M.,Kervazo M.,Choblet G.. The Fate of Liquids Trapped During the Earth's Inner Core Growth[J],2020,47(2).
APA	Lasbleis M.,Kervazo M.,&Choblet G..(2020).The Fate of Liquids Trapped During the Earth's Inner Core Growth.Geophysical Research Letters,47(2).
MLA	Lasbleis M.,et al."The Fate of Liquids Trapped During the Earth's Inner Core Growth".Geophysical Research Letters 47.2(2020).