气候变化领域集成服务门户(CCPortal): Spatiotemporal Properties of Sub-Rayleigh and Supershear Ruptures Inferred From Full-Field Dynamic Imaging of Laboratory Experiments

CCPortal

DOI	10.1029/2019JB018922
	Spatiotemporal Properties of Sub-Rayleigh and Supershear Ruptures Inferred From Full-Field Dynamic Imaging of Laboratory Experiments
	Rubino V.; Rosakis A.J.; Lapusta N.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	Many earthquakes propagate at sub-Rayleigh speeds. Earthquakes propagating at supershear speeds, though less common, are by far more destructive. Hence, it is important to quantify the motion characteristics associated with both types of earthquake ruptures. Here we report on the spatiotemporal properties of dynamic ruptures measured in our laboratory experiments using the dynamic digital image correlation technique. Earthquakes are mimicked by the frictional rupture propagating along the interface of two Homalite plates. Digital images of the propagating ruptures are captured by an ultrahigh-speed camera and processed with digital image correlation in order to produce sequences of evolving displacement and velocity maps. Our measurements reveal the full-field structure of the velocity components, bridge the gap between previous spatially sparse velocimeter measurements available only at two to three locations, and enable us to quantify the attenuation patterns away from the interface. ©2020. The Authors.
英文关键词	attenuation; digital image correlation; earthquake mechanics; laboratory experiments; sub-Rayleigh; supershear
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/188004
作者单位	Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, CA, United States; Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA, United States; Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Rubino V.,Rosakis A.J.,Lapusta N.. Spatiotemporal Properties of Sub-Rayleigh and Supershear Ruptures Inferred From Full-Field Dynamic Imaging of Laboratory Experiments[J],2020,125(2).
APA	Rubino V.,Rosakis A.J.,&Lapusta N..(2020).Spatiotemporal Properties of Sub-Rayleigh and Supershear Ruptures Inferred From Full-Field Dynamic Imaging of Laboratory Experiments.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Rubino V.,et al."Spatiotemporal Properties of Sub-Rayleigh and Supershear Ruptures Inferred From Full-Field Dynamic Imaging of Laboratory Experiments".Journal of Geophysical Research: Solid Earth 125.2(2020).