气候变化领域集成服务门户(CCPortal): Bifurcations at the Stability Transition of Earthquake Faulting

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DOI	10.1029/2020GL087985
	Bifurcations at the Stability Transition of Earthquake Faulting
	Mele Veedu D.; Giorgetti C.; Scuderi M.; Barbot S.; Marone C.; Collettini C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	Tectonic faults typically break in a single rupture mode within the range of styles from slow slip to dynamic earthquake failure. However, in increasingly well-documented instances, the same fault segment fails in both slow and fast modes within a short period, as in the sequences that culminated in the 2011 Mw = 9.0 Tohoku-Oki, Japan, and 2014 Mw = 8.2 Iquique, Chile, earthquakes. Why slow slip alternates with dynamic rupture in certain regions but not in others is not well understood. Here, we integrate laboratory experiments and numerical simulations to investigate the physical conditions leading to cycles where the two rupture styles alternate. We show that a bifurcation takes place near the stability transition with sequences encompassing various rupture modes under constant loading rate. The range of frictional instabilities and slip cycles identified in this study represents important end-members to understand the interaction of slow and fast slip on the same fault segment. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Bifurcation (mathematics); Earthquakes; Constant loading; Dynamic ruptures; Laboratory experiments; Physical conditions; Rupture mode; Short periods; Stability transition; Tectonic faults; Faulting; bifurcation; earthquake rupture; fault slip; friction; numerical model; simulation; Chile; Honshu; Iquique; Japan; Tarapaca; Tohoku
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169659
作者单位	Earth Observatory of Singapore, Nanyang Technological University, Singapore; Department of the Earth Sciences, Università degli Studi La Sapienza, Rome, Italy; Laboratory of Experimental Rock Mechanics, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland; Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Geosciences, Pennsylvania State University, University Park, PA, United States; Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
推荐引用方式 GB/T 7714	Mele Veedu D.,Giorgetti C.,Scuderi M.,et al. Bifurcations at the Stability Transition of Earthquake Faulting[J],2020,47(19).
APA	Mele Veedu D.,Giorgetti C.,Scuderi M.,Barbot S.,Marone C.,&Collettini C..(2020).Bifurcations at the Stability Transition of Earthquake Faulting.Geophysical Research Letters,47(19).
MLA	Mele Veedu D.,et al."Bifurcations at the Stability Transition of Earthquake Faulting".Geophysical Research Letters 47.19(2020).