DOI: 10.1002/2016GL069785
论文题名: Deformation and faulting of subduction overriding plate caused by a subducted seamount
作者: Ding M. ; Lin J.
刊名: Geophysical Research Letters
ISSN: 0094-8679
EISSN: 1944-8410
出版年: 2016
卷: 43, 期: 17 起始页码: 8936
结束页码: 8944
语种: 英语
英文关键词: earthquakes
; elastoplasticity
; fault formation
; overriding plate
; seamount
Scopus关键词: Earthquakes
; Elastoplasticity
; Geophysics
; Submarine geology
; Tectonics
; Earthquake process
; Elastoplastic deformation
; Numerical experiments
; Seamount
; Shaped surfaces
; Stress singularities
; Subduction interface
; Thrust faults
; Faulting
; deformation mechanism
; earthquake
; elastoplasticity
; fault propagation
; mathematical analysis
; plastic deformation
; seamount
; shear zone
; stress field
; subduction
; thrust fault
; uplift
英文摘要: We conducted numerical experiments to simulate elastoplastic deformation of the overriding plate caused by a subducted seamount. Calculations revealed development of a distinct pair of fault-like shear zones, including a landward dipping forethrust fault initiated from the seamount top and a seaward dipping backthrust fault from the landward base of the seamount. Significant dome-shaped surface uplift was predicted above the thrust faults. Lesser-developed seaward dipping backthrust faults were calculated to develop under certain conditions. The overriding plate was calculated to deform in two stages: In Stage I, elastic deformation leads to the formation of fault-like shear zones. After major faults have cut through the entire plate, plastic deformation on faults dominates Stage II. On the subduction interface, compressional normal stress was calculated to increase on the landward leading flank of the seamount and decrease on the seaward trailing flank. These changes, together with associated stress singularities at seamount edges, could affect earthquake processes. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84985963023&doi=10.1002%2f2016GL069785&partnerID=40&md5=916d65c25957e62f22ec47fd592047e0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9642
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: MIT/WHOI Joint Program, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Ding M.,Lin J.. Deformation and faulting of subduction overriding plate caused by a subducted seamount[J]. Geophysical Research Letters,2016-01-01,43(17).