DOI: 10.1002/grl.50974
论文题名: Characterization of nucleation during laboratory earthquakes
作者: Latour S. ; Schubnel A. ; Nielsen S. ; Madariaga R. ; Vinciguerra S.
刊名: Geophysical Research Letters
ISSN: 0094-8498
EISSN: 1944-8229
出版年: 2013
卷: 40, 期: 19 起始页码: 5064
结束页码: 5069
语种: 英语
英文关键词: laboratory earthquake
; nucleation
; rupture dynamics
; slow slip
Scopus关键词: Acceleration phase
; Critical nucleation
; Dynamic propagation
; Exponential growth
; In-plane ruptures
; Intrinsic property
; Natural earthquake
; slow slip
; Earthquakes
; Nucleation
; acceleration
; laboratory method
; nucleation
; rupture
; slip rate
英文摘要: We observe the nucleation phase of in-plane ruptures in the laboratory. We show that the nucleation is composed of two distinct phases, a quasi-static and an acceleration stage, followed by dynamic propagation. We propose an empirical model which describes the rupture length evolution: The quasi-static phase is described by an exponential growth while the acceleration phase is described by an inverse power law of time. The transition from quasi-static to accelerating rupture is related to the critical nucleation length, which scales inversely with normal stress in accordance with theoretical predictions, and to a critical surfacic power, which may be an intrinsic property of the interface. Finally, we discuss these results in the frame of previous studies and propose a scaling up to natural earthquake dimensions. Key Points Nucleation evolves in 2 phases, 1:exponantial, 2:inverse power function of time Transition occurs at critical length and velocity that scale inversely to stress A typical time is scaled to earthquakes to get the duration of their nucleation ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884918709&doi=10.1002%2fgrl.50974&partnerID=40&md5=8dfa5be70cfcf417f4b79ecd93373585
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5762
Appears in Collections: 气候减缓与适应
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作者单位: Laboratory of Geology, UMR 8538, CNRS, 24 Rue Lhomond, 75231 Paris CEDEX 5, France
Recommended Citation:
Latour S.,Schubnel A.,Nielsen S.,et al. Characterization of nucleation during laboratory earthquakes[J]. Geophysical Research Letters,2013-01-01,40(19).