| DOI: | 10.1002/2015GL063695
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| 论文题名: | Toward a generalized plate motion reference frame |
| 作者: | Becker T.W.; Schaeffer A.J.; Lebedev S.; Conrad C.P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8709
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| EISSN: | 1944-8440
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| 出版年: | 2015
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| 卷: | 42, 期:9 | | 起始页码: | 3188
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| 结束页码: | 3196
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| 语种: | 英语
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| 英文关键词: | absolute plate motions
; hot spots
; reference frame
; seismic anisotropy
; spreading alignment
; trench migration
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| Scopus关键词: | Anisotropy
; Poles
; Absolute plate motions
; Azimuthal seismic anisotropy
; Hot spot
; Indirect inference
; Reference frame
; Seafloor spreading
; Seismic anisotropy
; Uppermost mantle
; Seismology
; mantle
; plate motion
; rotation
; seismic anisotropy
; spreading center
; subduction
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| 英文摘要: | An absolute plate motion (APM) model is required to address issues such as the thermochemical evolution of Earth's mantle. All APM models have to rely on indirect inferences, including those based on hot spots and seismic anisotropy, each with their own set of uncertainties. Here, we explore a seafloor spreading-aligned reference frame. We show that this reference frame fits azimuthal seismic anisotropy in the uppermost mantle very well. The corresponding Euler pole is close to those of hot spot reference frames, ridge motion minimizing models, and geodynamic estimates of net rotation and predicts clear trench motion patterns. We conclude that a net rotation pole guided by the spreading-aligned model (at 64°E, 61°S, with moderate rotation of ∼ 0.2 ... 0.3°/Myr) could indeed represent a standard, comprehensive reference frame for present-day plate motions with respect to the deep mantle. Key Points A spreading-aligned plate motion reference frame matches seismic anisotropy This defines a comprehensive reference frame matching hot spots Universal reference frame clarifies subduction zone trench migration ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930481211&doi=10.1002%2f2015GL063695&partnerID=40&md5=555fe6a552f34c77a5cd20644e24023e
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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/8325
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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 Earth Sciences, University of Southern California, Los Angeles, CA, United States
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| Recommended Citation: | |
Becker T.W.,Schaeffer A.J.,Lebedev S.,et al. Toward a generalized plate motion reference frame[J]. Geophysical Research Letters,2015-01-01,42(9).
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