Preseismic Fault Creep and Elastic Wave Amplitude Precursors Scale With Lab Earthquake Magnitude for the Continuum of Tectonic Failure Modes
Preseismic Fault Creep and Elastic Wave Amplitude Precursors Scale With Lab Earthquake Magnitude for the Continuum of Tectonic Failure Modes
复制标题
构造破坏模式连续体的地震断层蠕变和弹性波振幅前兆尺度与实验室地震震级
DOI:
10.1029/2020gl086986
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发表时间:
2020
影响因子:
5.2
通讯作者:
Marone, Chris
中科院分区:
文献类型:
--
作者:
Shreedharan, Srisharan;Bolton, David Chas;Rivière, Jacques;Marone, Chris
Tectonic faults fail in a continuum of modes from slow earthquakes to elastodynamic rupture. Precursory variations in elastic wavespeed and amplitude, interpreted as indicators of imminent failure, have been observed in limited natural settings and lab experiments where they are thought to arise from contact rejuvenation and microcracking within and around the fault zone. However, the physical mechanisms and connections to fault creep are poorly understood. Here we vary loading stiffness during frictional shear to generate a range of slip modes and measure fault zone properties using transmitted elastic waves. We find that elastic wave amplitudes show clear changes before fault failure. The temporal onset of amplitude reduction scales with lab earthquake magnitude and the magnitude of this reduction varies with fault slip. Our data provide clear evidence of precursors to lab earthquakes and suggest that continuous seismic monitoring could be useful for assessing fault state and seismic hazard potential.
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
J. Aichele;S. Catheline;P. Roux;S. Latour;C. Voisin
通讯作者:
C. Voisin
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
T. Yamashita;A. Tsutsumi
通讯作者:
A. Tsutsumi
DOI:
--
发表时间:
2014
期刊:
Earth, Planets and Space
影响因子:
--
作者:
N. Kame;K. Nagata;M. Nakatani;Tetsuya Kusakabe
通讯作者:
Tetsuya Kusakabe
影响因子:
18.3
作者:
Hulbert, Claudia;Rouet-Leduc, Bertrand;Marone, Chris
通讯作者:
Marone, Chris
DOI:
10.1073/pnas.1810903116
发表时间:
2019-02-12
影响因子:
11.1
作者:
Zhu, Tieyuan;Ajo-Franklin, Jonathan;Marone, Chris
通讯作者:
Marone, Chris