Scaling in natural and laboratory earthquakes

S. Nielsen; E. Spagnuolo; S. A. F. Smith; M. Violay; Giulio Di Toro; A. Bistacchi

doi:10.1002/2015GL067490

Scaling in natural and laboratory earthquakes

S. Nielsen, E. Spagnuolo, S. A. F. Smith, M. Violay, Giulio Di Toro, A. Bistacchi

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Abstract

Laboratory experiments reproducing seismic slip conditions show extreme frictional weakening due to the activation of lubrication processes. Due to a substantial variability in the details of the weakening transient, generalization of experimental results and comparison to seismic observations have not been possible so far. Here we show that during the weakening, shear stress ð�œ� is generally well matched by a power law of slip u in the form ð�œ� âˆ� uâˆ’ð�›¼ (with 0.35

Original language	English
Journal	Geophysical Research Letters (Online)
DOIs	https://doi.org/10.1002/2015GL067490
Publication status	Published - 20 Feb 2016

Keywords

â¢ Dynamic friction weakening scales as a power law of slip â¢ The generalized weakening form explains the observed scaling of earthquake fracture energy â¢ In large earthquakes, dominating dissipation is not friction but rather plastic, off-fault strain

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AU - Nielsen, S.

AU - Spagnuolo, E.

AU - Smith, S. A. F.

AU - Violay, M.

AU - Di Toro, Giulio

AU - Bistacchi, A.

PY - 2016/2/20

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SN - 1944-8007

JO - Geophysical Research Letters (Online)

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Scaling in natural and laboratory earthquakes

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Keywords

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