气候变化领域集成服务门户(CCPortal): Reference Models for Lithospheric Geoneutrino Signal

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DOI	10.1029/2019JB018433
	Reference Models for Lithospheric Geoneutrino Signal
	Wipperfurth S.A.; Šrámek O.; McDonough W.F.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	Debate continues on the amount and distribution of radioactive heat producing elements (i.e., U, Th, and K) in the Earth, with estimates for mantle heat production varying by an order of magnitude. Constraints on the bulk-silicate Earth's (BSE) radiogenic power also places constraints on overall BSE composition. Geoneutrino detection is a direct measure of the Earth's decay rate of Th and U. The geoneutrino signal has contributions from the local ((Formula presented.) 40%) and global ((Formula presented.) 35%) continental lithosphere and the underlying inaccessible mantle ((Formula presented.) 25%). Geophysical models are combined with geochemical data sets to predict the geoneutrino signal at current and future geoneutrino detectors. We propagated uncertainties, both chemical and physical, through Monte Carlo methods. Estimated total signal uncertainties are on the order of (Formula presented.) 20%, proportionally with geophysical and geochemical inputs contributing (Formula presented.) 30% and (Formula presented.) 70%, respectively. We find that estimated signals, calculated using CRUST2.0, CRUST1.0, and LITHO1.0, are within physical uncertainty of each other, suggesting that the choice of underlying geophysical model will not change results significantly, but will shift the central value by up to (Formula presented.) 15%. Similarly, we see no significant difference between calculated layer abundances and bulk crustal heat production when using these geophysical models. The bulk crustal heat production is calculated as 7 (Formula presented.) 2 TW, which includes an increase of 1 TW in uncertainty relative to previous studies. Combination of our predicted lithospheric signal with measured signals yield an estimated BSE heat production of 21.5 (Formula presented.) 10.4 TW. Future improvements, including uncertainty attribution and near-field modeling, are discussed. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	CRUST1.0; CRUST2.0; geoneutrino; heat production; LITHO1.0; U-Th-K
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/187935
作者单位	Department of Geology, University of Maryland, College Park, MD, United States; Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic; Department of Earth Sciences and Research Center for Neutrino Science, Tohoku University, Sendai, Japan
推荐引用方式 GB/T 7714	Wipperfurth S.A.,Šrámek O.,McDonough W.F.. Reference Models for Lithospheric Geoneutrino Signal[J],2020,125(2).
APA	Wipperfurth S.A.,Šrámek O.,&McDonough W.F..(2020).Reference Models for Lithospheric Geoneutrino Signal.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Wipperfurth S.A.,et al."Reference Models for Lithospheric Geoneutrino Signal".Journal of Geophysical Research: Solid Earth 125.2(2020).