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Laboratory experiments examine earthquake precursors (2014)

Ernie Balcerak

Wiley

In: Eos, Transactions

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Publication Date: 2014-01-11

Description: Although it is not possible to predict when an earthquake will occur, many earthquakes have been found to have had some precursor activity. To study precursors of stick-slip behavior, Johnson et al . conducted laboratory experiments on a sheared granular material under normal stress ranging from 2 to 8 megapascals as an analog for a fault under tectonic stress. They found that acoustic emissions and microslips are a precursor to larger movements. Very similar results were obtained in a discrete element simulation of sheared beads. These types of experiments could help scientists better understand when earthquakes are more likely to occur. As shown by a number of researchers, very similar activity preceding faulting can occur in the Earth.

Print ISSN: 0096-3941

Electronic ISSN: 2324-9250

Topics: Geosciences

Published by Wiley on behalf of American Geophysical Union (AGU).

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