| DOI: | 10.1002/2016GL068239
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| 论文题名: | Uncertainty of mantle geophysical properties computed from phase equilibrium models |
| 作者: | Connolly J.A.D.; Khan A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9582
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| EISSN: | 1944-9313
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| 出版年: | 2016
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| 卷: | 43, 期:10 | | 起始页码: | 5026
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| 结束页码: | 5034
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| 语种: | 英语
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| 英文关键词: | geophysics
; mantle composition
; mantle temperature
; phase equilibria
; thermodynamics
; uncertainty
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| Scopus关键词: | Geophysics
; Seismic waves
; Shear flow
; Shear waves
; Thermodynamics
; Uncertainty analysis
; Adiabatic temperature
; Elastic properties
; Geophysical properties
; Mantle composition
; Mantle temperatures
; Phase equilibrium models
; Phase equilibriums
; Uncertainty
; Phase equilibria
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| 英文摘要: | Phase equilibrium models are used routinely to predict geophysically relevant mantle properties. A limitation of this approach is that nonlinearity of the phase equilibrium problem precludes direct assessment of the resultant uncertainties. To overcome this obstacle, we stochastically assess uncertainties along self-consistent mantle adiabats for pyrolitic and basaltic bulk compositions to 2000 km depth. The dominant components of the uncertainty are the identity, composition and elastic properties of the minerals. For P wave speed and density, the latter components vary little, whereas the first is confined to the upper mantle. Consequently, P wave speeds, densities, and adiabatic temperatures and pressures predicted by phase equilibrium models are more uncertain in the upper mantle than in the lower mantle. In contrast, uncertainties in S wave speeds are dominated by the uncertainty in shear moduli and are approximately constant throughout the model depth range. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973392464&doi=10.1002%2f2016GL068239&partnerID=40&md5=61d9b2dfb162ae71d4b2915b2b5cf81f
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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/10545
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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: | Institute of Geochemistry and Petrology, ETH Zürich, Switzerland
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| Recommended Citation: | |
Connolly J.A.D.,Khan A.. Uncertainty of mantle geophysical properties computed from phase equilibrium models[J]. Geophysical Research Letters,2016-01-01,43(10).
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