气候变化领域集成服务门户(CCPortal): A Geothermal Heat Flux Map of Antarctica Empirically Constrained by Seismic Structure

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DOI	10.1029/2020GL086955
	A Geothermal Heat Flux Map of Antarctica Empirically Constrained by Seismic Structure
	Shen W.; Wiens D.A.; Lloyd A.J.; Nyblade A.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	The geothermal heat flux (GHF) is an important boundary condition for modeling the movement of the Antarctic ice sheet but is difficult to measure systematically at a continental scale. Earlier GHF maps suffer from low resolution and possibly biased assumptions in tectonism and crustal heat generation, resulting in significant uncertainty. We present a new GHF map for Antarctica constructed by empirically relating the upper mantle structure to known GHF in the continental United States. The new map, compared with previously seismologically determined one, has improved resolution and lower uncertainties. New features in this map include high GHF in the southern Transantarctic Mountains where warmer uppermost mantle is introduced by lithospheric removal and in the Thwaites Glacier region. Additionally, a modest GHF in the central West Antarctic Rift system near the Siple Coast and an absence of large-scale regions with GHF greater than 90 mW/m2 are found. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geothermal energy; Geothermal heating; Structural geology; Antarctic ice sheets; Continental scale; Lithospheric; Low resolution; Rift systems; Seismic structure; Upper mantle structure; Uppermost mantle; Heat flux; boundary condition; empirical analysis; heat flux; ice sheet; lithosphere; mantle structure; movement; seismic method; uncertainty analysis; upper mantle; Antarctica; Siple Coast; Thwaites Glacier; Transantarctic Mountains; West Antarctica
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/170141
作者单位	Department of Geosciences, State University of New York at Stony Brook, Stony Brook, NY, United States; Department of Earth and Planetary Sciences, Washington University in St Louis, St. Louis, MO, United States; Now at Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; Department of Geosciences, Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Shen W.,Wiens D.A.,Lloyd A.J.,et al. A Geothermal Heat Flux Map of Antarctica Empirically Constrained by Seismic Structure[J],2020,47(14).
APA	Shen W.,Wiens D.A.,Lloyd A.J.,&Nyblade A.A..(2020).A Geothermal Heat Flux Map of Antarctica Empirically Constrained by Seismic Structure.Geophysical Research Letters,47(14).
MLA	Shen W.,et al."A Geothermal Heat Flux Map of Antarctica Empirically Constrained by Seismic Structure".Geophysical Research Letters 47.14(2020).