DOI: 10.1002/2015GL064047
论文题名: Relationship between slab dip and topography segmentation in an oblique subduction zone: Insights from numerical modeling
作者: Cerpa N.G. ; Araya R. ; Gerbault M. ; Hassani R.
刊名: Geophysical Research Letters
ISSN: 0094-9180
EISSN: 1944-8911
出版年: 2015
卷: 42, 期: 14 起始页码: 5786
结束页码: 5795
语种: 英语
英文关键词: oblique subduction
; periodic slab folding
; slab dip
; topography segmentation
Scopus关键词: Numerical models
; Topography
; Depth discontinuities
; Mountain building
; Oblique subduction
; Periodic slab folding
; Slab dip
; State of stress
; Subducting plate
; Three-dimensional model
; Tectonics
; comparative study
; kinematics
; numerical model
; slab
; subduction zone
; three-dimensional modeling
; topography
; Andes
英文摘要: Slab dip controls the state of stress in an overriding plate and affects mountain building. Analog and numerical models have shown variations in tectonic regime induced by slab folding over the 660 km depth discontinuity zone in orthogonal convergence. Here using a three-dimensional model of oblique subduction (30°) and accounting for free top surfaces, we show how slab folding generates an along-strike slab dip segmentation, inducing variations in topography of the overriding plate. When the subducting plate begins to curve forward, the elevation height rises inland and varies along the trench from 5 km to 2 km. The Andes are a suitable natural zone to compare our results with because of its linear margin and well-constrained plates kinematics. Thus, we provide a new explanation to the general decrease in elevation from the central to southern Andes, which still remains to be combined with other 3-D mechanisms to explain the actual Andean topography. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938996335&doi=10.1002%2f2015GL064047&partnerID=40&md5=8a88a4eb55abe5256628f61a2b63d0ff
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8796
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: Observatoire de la Côte d'Azur, Géoazur UMR 7329, Université de Nice Sophia Antipolis, CNRS, IRD, Valbonne, France
Recommended Citation:
Cerpa N.G.,Araya R.,Gerbault M.,et al. Relationship between slab dip and topography segmentation in an oblique subduction zone: Insights from numerical modeling[J]. Geophysical Research Letters,2015-01-01,42(14).