globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068436
论文题名:
Organization of ice flow by localized regions of elevated geothermal heat flux
作者: Pittard M.L.; Galton-Fenzi B.K.; Roberts J.L.; Watson C.S.
刊名: Geophysical Research Letters
ISSN: 0094-9170
EISSN: 1944-8901
出版年: 2016
卷: 43, 期:7
起始页码: 3342
结束页码: 3350
语种: 英语
英文关键词: East Antarctic Ice Sheet ; geothermal heat flux ; ice dynamics ; ice sheet modeling ; Lambert-Amery glacial system ; radiogenic crustal heat production
Scopus关键词: Dynamics ; Geothermal energy ; Geothermal heating ; Glacial geology ; Glaciers ; Ice ; Thermonuclear reactions ; East antarctic ice sheets ; Heat production ; Ice dynamics ; Ice sheet models ; Lambert-Amery glacial system ; Heat flux
英文摘要: The impact of localized regions of elevated geothermal heat flux on ice sheet dynamics is largely unknown. Simulations of ice dynamics are produced using poorly resolved and low-resolution estimates of geothermal heat flux. Observations of crustal heat production within the continental crust underneath the Lambert-Amery glacial system in East Antarctica indicate that high heat flux regions of at least 120 mW m-2 exist. Here we investigate the influence of simulated but plausible, localized regions of elevated geothermal heat flux on ice dynamics using a numerical ice sheet model of the Lambert-Amery glacial system. We find that high heat flux regions have a significant effect across areas of slow-moving ice with the influence extending both upstream and downstream of the geothermal anomaly, while fast-moving ice is relatively unaffected. Our results suggest that localized regions of elevated geothermal heat flux may play an important role in the organization of ice sheet flow. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979467470&doi=10.1002%2f2016GL068436&partnerID=40&md5=8c45b2a7444796494c73c60d079a7abf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10133
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia

Recommended Citation:
Pittard M.L.,Galton-Fenzi B.K.,Roberts J.L.,et al. Organization of ice flow by localized regions of elevated geothermal heat flux[J]. Geophysical Research Letters,2016-01-01,43(7).
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