DOI: 10.1002/2015GL065621
论文题名: The efficiency of plate tectonics and nonequilibrium dynamical evolution of planetary mantles
作者: Moore W.B. ; Lenardic A.
刊名: Geophysical Research Letters
ISSN: 0094-8457
EISSN: 1944-8188
出版年: 2015
卷: 42, 期: 21 起始页码: 9255
结束页码: 9260
语种: 英语
英文关键词: plate tectonics
; thermal evolution
Scopus关键词: Dynamical systems
; Efficiency
; Energy efficiency
; Heat pipes
; Heat transfer
; Planets
; Plates (structural components)
; Dynamical evolution
; Heat transport
; Mantle temperatures
; Non equilibrium
; Quasi equilibrium
; Terrestrial planets
; Thermal evolution
; Tectonics
; efficiency measurement
; equilibrium
; heat transfer
; mantle
; pipe
; plate tectonics
; tectonic evolution
; temperature
; thermal evolution
英文摘要: Consideration of the structure of dynamical equilibria in terrestrial planets using simplified descriptions of the relevant heat transport processes (rigid-lid convection, plate tectonics, and heat pipe volcanism) reveals that if the efficiency of plate tectonic heat transport decreases at higher mantle temperature, then it cannot govern quasi-equilibrium dynamical evolution, and the system is always evolving away from the plate tectonic regime. A planet on which plate tectonics is less efficient at higher temperature stays in heat pipe mode longer, spends less time undergoing plate tectonics, and has a low and ever-decreasing Urey number during this phase. These conclusions are based solely on the structure of the equilibria in a system with less efficient plate tectonics in the past and are independent of the mechanisms leading to this behavior. Commonly used quasi-equilibrium approaches to planetary thermal evolution are likely not valid for planets in which heat transport becomes less efficient at higher temperature. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955170548&doi=10.1002%2f2015GL065621&partnerID=40&md5=8d01cdc2250a99b13043736aa36896d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8073
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
Recommended Citation:
Moore W.B.,Lenardic A.. The efficiency of plate tectonics and nonequilibrium dynamical evolution of planetary mantles[J]. Geophysical Research Letters,2015-01-01,42(21).