Fault lubrication during earthquakes

G. Di Toro (), R. Han, T. Hirose, N. De Paola, S. Nielsen, K. Mizoguchi, F. Ferri, M. Cocco and T. Shimamoto
Additional contact information
G. Di Toro: Università di Padova
R. Han: Korea Institute of Geoscience and Mineral Resources
T. Hirose: Kochi Institute for Core Sample Research, JAMSTEC
N. De Paola: University of Durham
S. Nielsen: Istituto Nazionale di Geofisica e Vulcanologia
K. Mizoguchi: Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry
F. Ferri: Università di Padova
M. Cocco: Istituto Nazionale di Geofisica e Vulcanologia
T. Shimamoto: Institute of Geology, China Earthquake Administration

Nature, 2011, vol. 471, issue 7339, 494-498

Abstract: Rock type irrelevant for earthquake lubrication A review of about 300 published and unpublished rock friction experiments that reproduce seismic slip conditions suggests that a significant decrease in friction occurs at high slip rate. Extrapolating the experimental data to conditions that are typical of earthquake nucleation depths, the authors conclude that faults are lubricated during earthquakes, irrespective of the fault rock composition or specific weakening mechanism involved.

Date: 2011
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DOI: 10.1038/nature09838

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