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Title: From Stress Chains to Acoustic Emission

Abstract

A numerical scheme using the combined finite-discrete element method is employed to study a model of an earthquake system comprising a granular layer embedded in a formation. When the formation is driven so as to shear the granular layer, a system of stress chains emerges. The stress chains endow the layer with resistance to shear and on failure launch broadcasts into the formation. Furthermore, these broadcasts, received as acoustic emission, provide a remote monitor of the state of the granular layer of the earthquake system.

Authors:
ORCiD logo [1];  [2];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Nevada, Reno, NV (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1650613
Alternate Identifier(s):
OSTI ID: 1545432
Report Number(s):
LA-UR-19-21038
Journal ID: ISSN 0031-9007
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 4; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Earthquakes; geophysics; granular avalanches; granular chains; granular materials

Citation Formats

Gao, Ke, Guyer, Robert, Rougier, Esteban, Ren, Christopher X., and Johnson, Paul A. From Stress Chains to Acoustic Emission. United States: N. p., 2019. Web. https://doi.org/10.1103/physrevlett.123.048003.
Gao, Ke, Guyer, Robert, Rougier, Esteban, Ren, Christopher X., & Johnson, Paul A. From Stress Chains to Acoustic Emission. United States. https://doi.org/10.1103/physrevlett.123.048003
Gao, Ke, Guyer, Robert, Rougier, Esteban, Ren, Christopher X., and Johnson, Paul A. Fri . "From Stress Chains to Acoustic Emission". United States. https://doi.org/10.1103/physrevlett.123.048003. https://www.osti.gov/servlets/purl/1650613.
@article{osti_1650613,
title = {From Stress Chains to Acoustic Emission},
author = {Gao, Ke and Guyer, Robert and Rougier, Esteban and Ren, Christopher X. and Johnson, Paul A.},
abstractNote = {A numerical scheme using the combined finite-discrete element method is employed to study a model of an earthquake system comprising a granular layer embedded in a formation. When the formation is driven so as to shear the granular layer, a system of stress chains emerges. The stress chains endow the layer with resistance to shear and on failure launch broadcasts into the formation. Furthermore, these broadcasts, received as acoustic emission, provide a remote monitor of the state of the granular layer of the earthquake system.},
doi = {10.1103/physrevlett.123.048003},
journal = {Physical Review Letters},
number = 4,
volume = 123,
place = {United States},
year = {2019},
month = {7}
}

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