Spatiotemporal Properties of Sub‐Rayleigh and Supershear Ruptures Inferred From Full‐Field Dynamic Imaging of Laboratory Experiments
Spatiotemporal Properties of Sub‐Rayleigh and Supershear Ruptures Inferred From Full‐Field Dynamic Imaging of Laboratory Experiments
复制标题
从实验室实验的全场动态成像推断亚瑞利和超剪切断裂的时空特性
DOI:
10.1029/2019jb018922
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Lapusta, N.
中科院分区:
文献类型:
--
作者:
Rubino, V.;Rosakis, A. J.;Lapusta, N.
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.
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影响因子:
16.6
作者:
Gori M;Rubino V;Rosakis AJ;Lapusta N
通讯作者:
Lapusta N
影响因子:
--
作者:
D. Ngo;Yonggang Huang;A. Rosakis;W. Griffith;D. Pollard
通讯作者:
D. Ngo;Yonggang Huang;A. Rosakis;W. Griffith;D. Pollard
影响因子:
5.3
作者:
M. Mello;H. Bhat;A. Rosakis
通讯作者:
M. Mello;H. Bhat;A. Rosakis
DOI:
10.1115/1.2791788
发表时间:
1999-12
期刊:
Journal of Applied Mechanics
影响因子:
--
作者:
A. Needleman
通讯作者:
A. Needleman
DOI:
--
发表时间:
2007
影响因子:
11.1
作者:
Xiao Lu;N. Lapusta;A. Rosakis
通讯作者:
A. Rosakis