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DOI	10.1038/s41561-020-00654-4
	Continuum of earthquake rupture speeds enabled by oblique slip
	Weng H.; Ampuero J.-P.
发表日期	2020
ISSN	17520894
起始页码	817
结束页码	821
卷号	13 期号:12
英文摘要	Earthquake rupture speed can affect ground shaking and therefore seismic hazard. Seismological observations show that large earthquakes span a continuum of rupture speeds, from slower than Rayleigh waves up to P-wave speed, and include speeds that are predicted to be unstable by two-dimensional theory. This discrepancy between observations and theory has not yet been reconciled by a quantitative model. Here we present numerical simulations that show that long ruptures with oblique slip (both strike-slip and dip-slip components) can propagate steadily at various speeds, including those previously suggested to be unstable. The obliqueness of slip and the ratio of fracture energy to static energy release rate primarily control the propagation speed of long ruptures. We find that the effects of these controls on rupture speed can be predicted by extending the three-dimensional theory of fracture mechanics to long ruptures with oblique slip. This model advances our ability to interpret supershear earthquakes, to constrain the energy ratio of faults based on observed rupture speed and rake angle, and to relate the potential rupture speed and size of future earthquakes to the observed slip deficit along faults. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	dip-slip fault; earthquake rupture; energy dissipation; fracture mechanics; numerical model; seismic hazard; slip rate; three-dimensional modeling
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206842
作者单位	Université Côte d’Azur, IRD, CNRS, Observatoire de la Côte d’Azur, Géoazur, Sophia Antipolis, France
推荐引用方式 GB/T 7714	Weng H.,Ampuero J.-P.. Continuum of earthquake rupture speeds enabled by oblique slip[J],2020,13(12).
APA	Weng H.,&Ampuero J.-P..(2020).Continuum of earthquake rupture speeds enabled by oblique slip.Nature Geoscience,13(12).
MLA	Weng H.,et al."Continuum of earthquake rupture speeds enabled by oblique slip".Nature Geoscience 13.12(2020).