DOI: 10.1002/2015GL063107
论文题名: Rupture termination at restraining bends: The last great earthquake on the Altyn Tagh Fault
作者: Elliott A.J. ; Oskin M.E. ; Liu-Zeng J. ; Shao Y.
刊名: Geophysical Research Letters
ISSN: 0094-8786
EISSN: 1944-8517
出版年: 2015
卷: 42, 期: 7 起始页码: 2164
结束页码: 2170
语种: 英语
英文关键词: Altyn Tagh Fault
; earthquake
; fault bend
; rupture barrier
; rupture mechanics
; surface rupture
Scopus关键词: Earthquakes
; Forecasting
; Strike-slip faults
; Altyn Tagh fault
; Coulomb failure stress
; Fault bends
; Great earthquake
; Model prediction
; Rupture barrier
; Rupture propagation
; Surface ruptures
; Faulting
; alluvial fan
; earthquake event
; earthquake rupture
; flow modeling
; geomorphology
; Altyn Tagh Fault Zone
; China
英文摘要: Strike-slip rupture propagation falters where changes in fault strike increase Coulomb failure stress. Numerical models of this phenomenon offer predictions of rupture extent based on bend geometry, but have not been verified with field data. To test model predictions of rupture barriers, we examine rupture extent along a section of the sinistral Altyn Tagh Fault punctuated by three major double bends. We measure 3-8 m offsets and map >95 km of continuous scarps that define the most recent surface rupture. We document the eastern terminus of this rupture within the Aksay bend, where an undeformed Pleistocene alluvial fan we mapped and dated overlaps the fault. We conclude, based on this geomorphologic evidence, that multiple Holocene ruptures have stopped in the Aksay bend. Our field data validate model predictions of rupture termination at a >18 restraining bend and support use of geometric parameters to define expected earthquake sizes in seismic hazard models. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928704415&doi=10.1002%2f2015GL063107&partnerID=40&md5=edf8da4ac1285c437baa4ad2a55d26b7
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8402
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Earth and Planetary Sciences, University of California, Davis, CA, United States
Recommended Citation:
Elliott A.J.,Oskin M.E.,Liu-Zeng J.,et al. Rupture termination at restraining bends: The last great earthquake on the Altyn Tagh Fault[J]. Geophysical Research Letters,2015-01-01,42(7).