DOI: 10.5194/tc-14-3843-2020
论文题名: Review article: Geothermal heat flow in Antarctica: Current and future directions
作者: Burton-Johnson A. ; Dziadek R. ; Martin C.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 11 起始页码: 3843
结束页码: 3873
语种: 英语
英文关键词: basal melting
; bedrock
; borehole
; geophysics
; heat flow
; heat production
; isostasy
; Antarctica
英文摘要: Antarctic geothermal heat flow (GHF) affects the temperature of the ice sheet, determining its ability to slide and internally deform, as well as the behaviour of the continental crust. However, GHF remains poorly constrained, with few and sparse local, borehole-derived estimates and large discrepancies in the magnitude and distribution of existing continent-scale estimates from geophysical models. We review the methods to estimate GHF, discussing the strengths and limitations of each approach; compile borehole and probe-derived estimates from measured temperature profiles; and recommend the following future directions. (1) Obtain more borehole-derived estimates from the subglacial bedrock and englacial temperature profiles. (2) Estimate GHF from inverse glaciological modelling, constrained by evidence for basal melting and englacial temperatures (e.g. using microwave emissivity). (3) Revise geophysically derived GHF estimates using a combination of Curie depth, seismic, and thermal isostasy models. (4) Integrate in these geophysical approaches a more accurate model of the structure and distribution of heat production elements within the crust and considering heterogeneities in the underlying mantle. (5) Continue international interdisciplinary communication and data access. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164416
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Alten Hafen, Bremerhaven, Germany
Recommended Citation:
Burton-Johnson A.,Dziadek R.,Martin C.. Review article: Geothermal heat flow in Antarctica: Current and future directions[J]. Cryosphere,2020-01-01,14(11)