Frequency–Magnitude Statistics of Laboratory Foreshocks Vary With Shear Velocity, Fault Slip Rate, and Shear Stress
Abstract
Understanding the nucleation phase of earthquakes is key for advancing earthquake hazard assessment and improving earthquake early warning systems. However, little progress has been made in this area due to a poor understanding of nucleation processes and incomplete seismic and fault zone measurements. The ability to integrate measured fault zone properties with seismic data could significantly improve our understanding of how earthquakes begin and whether there are systematic variations in seismic properties preceding failure. In this work, we use high-resolution laboratory measurements of fault zone properties along with acoustic emission data to document temporal variations of foreshock properties. Our data show that foreshock size increases with shear stress, loading rate, and fault slip rate. We propose that the preseismic fault slip rate and fault zone thickness (i.e., porosity) work in concert to modulate foreshock properties.
- Authors:
-
[1];
[1];
[2];
[3]
- Univ. of Texas Inst. for Geophysics, Austin, TX (United States)
- Pennsylvania State Univ., University Park, PA (United States)
- La Sapienza Univ. di Roma (Italy)
- Publication Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; US National Science Foundtion
- OSTI Identifier:
- 1831052
- Grant/Contract Number:
- SC0020512; EE0008763; EAR-1520760; EAR-1547441
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research. Solid Earth
- Additional Journal Information:
- Journal Volume: 126; Journal Issue: 11; Journal ID: ISSN 2169-9313
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; 15 GEOTHERMAL ENERGY
Citation Formats
Bolton, David C., Shreedharan, Srisharan, Rivière, Jacques, and Marone, Chris. Frequency–Magnitude Statistics of Laboratory Foreshocks Vary With Shear Velocity, Fault Slip Rate, and Shear Stress. United States: N. p., 2021.
Web. doi:10.1029/2021jb022175.
Bolton, David C., Shreedharan, Srisharan, Rivière, Jacques, & Marone, Chris. Frequency–Magnitude Statistics of Laboratory Foreshocks Vary With Shear Velocity, Fault Slip Rate, and Shear Stress. United States. https://doi.org/10.1029/2021jb022175
Bolton, David C., Shreedharan, Srisharan, Rivière, Jacques, and Marone, Chris. Tue .
"Frequency–Magnitude Statistics of Laboratory Foreshocks Vary With Shear Velocity, Fault Slip Rate, and Shear Stress". United States. https://doi.org/10.1029/2021jb022175. https://www.osti.gov/servlets/purl/1831052.
@article{osti_1831052,
title = {Frequency–Magnitude Statistics of Laboratory Foreshocks Vary With Shear Velocity, Fault Slip Rate, and Shear Stress},
author = {Bolton, David C. and Shreedharan, Srisharan and Rivière, Jacques and Marone, Chris},
abstractNote = {Understanding the nucleation phase of earthquakes is key for advancing earthquake hazard assessment and improving earthquake early warning systems. However, little progress has been made in this area due to a poor understanding of nucleation processes and incomplete seismic and fault zone measurements. The ability to integrate measured fault zone properties with seismic data could significantly improve our understanding of how earthquakes begin and whether there are systematic variations in seismic properties preceding failure. In this work, we use high-resolution laboratory measurements of fault zone properties along with acoustic emission data to document temporal variations of foreshock properties. Our data show that foreshock size increases with shear stress, loading rate, and fault slip rate. We propose that the preseismic fault slip rate and fault zone thickness (i.e., porosity) work in concert to modulate foreshock properties.},
doi = {10.1029/2021jb022175},
journal = {Journal of Geophysical Research. Solid Earth},
number = 11,
volume = 126,
place = {United States},
year = {Tue Nov 02 00:00:00 EDT 2021},
month = {Tue Nov 02 00:00:00 EDT 2021}
}
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