| DOI: | 10.1002/2015GL067411
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| 论文题名: | Heat transport in the Hadean mantle: From heat pipes to plates |
| 作者: | Kankanamge D.G.J.; Moore W.B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9144
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| EISSN: | 1944-8875
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| 出版年: | 2016
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| 卷: | 43, 期:7 | | 起始页码: | 3208
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| 结束页码: | 3214
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| 语种: | 英语
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| 英文关键词: | heat pipe mode
; initiation of plate tectonics
; melting
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| Scopus关键词: | Heat pipes
; Heat transfer
; Melting
; Breaking process
; Earth's mantle
; Heat transport
; Internal heating
; Lithospheric thickness
; Melt segregation
; Temperature dependent viscosity
; Unique features
; Tectonics
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| 英文摘要: | Plate tectonics is a unique feature of Earth, and it plays a dominant role in transporting Earth's internally generated heat. It also governs the nature, shape, and the motion of the surface of Earth. The initiation of plate tectonics on Earth has been difficult to establish observationally, and modeling of the plate breaking process has not consistently accounted for the nature of the preplate tectonic Earth. We have performed numerical simulations of heat transport in the preplate tectonic Earth to understand the transition to plate tectonic behavior. This period of time is dominated by volcanic heat transport called the heat pipe mode of planetary cooling. These simulations of Earth's mantle include heat transport by melting and melt segregation (volcanism), Newtonian temperature-dependent viscosity, and internal heating. We show that when heat pipes are active, the lithosphere thickens and lithospheric isotherms are kept flat by the solidus. Both of these effects act to suppress plate tectonics. As volcanism wanes, conduction begins to control lithospheric thickness, and large slopes arise at the base of the lithosphere. This produces large lithospheric stress and focuses it on the thinner regions of the lithosphere resulting in plate breaking events. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981765081&doi=10.1002%2f2015GL067411&partnerID=40&md5=3c6586c828c84a7aa137b564f7add41e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10107
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| 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: | Department of Atmospheric and Planetary Sciences, Hampton University, Hampton, VA, United States
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| Recommended Citation: | |
Kankanamge D.G.J.,Moore W.B.. Heat transport in the Hadean mantle: From heat pipes to plates[J]. Geophysical Research Letters,2016-01-01,43(7).
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