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Topography of the Overriding Plate During Progressive Subduction: A Dynamic Model to Explain Forearc Subsidence | |
Chen, Zhihao1,2; Schellart, Wouter P.1,3; Duarte, Joao C.1,4,5; Strak, Vincent1,4,5 | |
2017-10-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Japan; Netherlands; Portugal |
英文摘要 | Overriding plate topography provides constraints on subduction zone geodynamics. We investigate its evolution using fully dynamic laboratory models of subduction with techniques of stereoscopic photogrammetry and particle image velocimetry. Model results show that the topography is characterized by an area of forearc dynamic subsidence, with a magnitude scaling to 1.44-3.97km in nature, and a local topographic high between the forearc subsided region and the trench. These topographic features rapidly develop during the slab free-sinking phase and gradually decrease during the steady state slab rollback phase. We propose that they result from the variation of the vertical component of the trench suction force along the subduction zone interface, which gradually increases with depth and results from the gradual slab steepening during the initial transient slab sinking phase. The downward mantle flow in the nose of the mantle wedge plays a minor role in driving forearc subsidence. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413921300014 |
WOS关键词 | INDUCED MANTLE FLOW ; CONTINENTAL COLLISION ; LABORATORY MODELS ; SLAB ; LITHOSPHERE ; DEFORMATION ; INSIGHTS ; MOTION ; ZONES ; QUANTIFICATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27087 |
专题 | 气候变化 |
作者单位 | 1.Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic, Australia; 2.Japan Agcy Marine Earth Sci & Technol, Yokohama, Kanagawa, Japan; 3.Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands; 4.Univ Lisbon, Inst Dom Luiz, Fac Ciencias, Lisbon, Portugal; 5.Univ Lisbon, Dept Geol, Fac Ciencias, Lisbon, Portugal |
推荐引用方式 GB/T 7714 | Chen, Zhihao,Schellart, Wouter P.,Duarte, Joao C.,et al. Topography of the Overriding Plate During Progressive Subduction: A Dynamic Model to Explain Forearc Subsidence[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(19). |
APA | Chen, Zhihao,Schellart, Wouter P.,Duarte, Joao C.,&Strak, Vincent.(2017).Topography of the Overriding Plate During Progressive Subduction: A Dynamic Model to Explain Forearc Subsidence.GEOPHYSICAL RESEARCH LETTERS,44(19). |
MLA | Chen, Zhihao,et al."Topography of the Overriding Plate During Progressive Subduction: A Dynamic Model to Explain Forearc Subsidence".GEOPHYSICAL RESEARCH LETTERS 44.19(2017). |
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