Laboratory Earthquakes: The Sub-Rayleigh-to-Supershear Rupture Transition

Author:

Xia Kaiwen12,Rosakis Ares J.12,Kanamori Hiroo12

Affiliation:

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

2. Graduate Aeronautical Laboratories, MC 105-50, Caltech, Pasadena, CA 91125, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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