| DOI: | 10.1002/2014GL062876
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| 论文题名: | How weak is the subduction zone interface? |
| 作者: | Duarte J.C.; Schellart W.P.; Cruden A.R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8765
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| EISSN: | 1944-8496
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| 出版年: | 2015
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| 卷: | 42, 期:8 | | 起始页码: | 2664
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| 结束页码: | 2673
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| 语种: | 英语
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| 英文关键词: | analog modeling
; subduction interface
; subduction zones
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| Scopus关键词: | Shear flow
; Tectonics
; Analog modeling
; Critical factors
; Empirical relationships
; Feedback mechanisms
; Laboratory experiments
; Plate interfaces
; Subduction interface
; Subduction zones
; Shear stress
; empirical analysis
; interface
; plate tectonics
; shear stress
; subduction zone
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| 英文摘要: | Several lines of evidence suggest that subduction zones are weak and that the unique availability of water on Earth is a critical factor in the weakening process. We have evaluated the strength of subduction zone interfaces using two approaches: (i) from empirical relationships between shear stress at the interface and subduction velocity, deduced from laboratory experiments; and (ii) from a parametric study of natural subduction zones that provides new insights on subduction zone interface strength. Our results suggest that subduction is only mechanically feasible when shear stresses along the plate interface are relatively low (less than ∼35 MPa). To account for this requirement, we propose that there is a feedback mechanism between subduction velocity, water released from the subducting plate, and weakening of the fore-arc mantle that may explain how relatively low shear stresses are maintained at subduction interfaces globally. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929518074&doi=10.1002%2f2014GL062876&partnerID=40&md5=def6da8850789432c9233afbecab62bb
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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/8381
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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: | School of Earth, Atmosphere and Environment, Monash University, Melbourne, VIC, Australia
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| Recommended Citation: | |
Duarte J.C.,Schellart W.P.,Cruden A.R.. How weak is the subduction zone interface?[J]. Geophysical Research Letters,2015-01-01,42(8).
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