实验室地震：亚瑞利到超剪切破裂转变

Laboratory earthquakes: the sub-Rayleigh-to-supershear rupture transition.

作者信息

Xia Kaiwen, Rosakis Ares J, Kanamori Hiroo

机构信息

Seismological Laboratory, MC 252-21, California Institute of Technology (Caltech), Pasadena, CA 91125, USA.

出版信息

Science. 2004 Mar 19;303(5665):1859-61. doi: 10.1126/science.1094022.

DOI:10.1126/science.1094022

PMID:15031503

Abstract

We report on the experimental observation of spontaneously nucleated supershear rupture and on the visualization of sub-Rayleigh-to-supershear rupture transitions in frictionally held interfaces. The laboratory experiments mimic natural earthquakes. The results suggest that under certain conditions supershear rupture propagation can be facilitated during large earthquake events.

摘要

我们报告了自发成核的超剪切破裂的实验观测结果，以及摩擦界面中亚瑞利到超剪切破裂转变的可视化情况。实验室实验模拟了自然地震。结果表明，在某些条件下，大地震事件中超剪切破裂的传播可能会得到促进。