Professor Stefan Nielsen stefan.nielsen@durham.ac.uk
Professor
Professor Stefan Nielsen stefan.nielsen@durham.ac.uk
Professor
E. Spagnuolo
S. Smith
M. Violay
G. Di Toro
A. Bistacchi
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 τ is generally well matched by a power law of slip u in the form inline image (with 0.35 < α < 0.6). The resulting fracture energy Gf can be approximated by a power law in some aspects in agreement with the seismological estimates inline image. It appears that Gf and inline image are comparable in the range 0.01 < u < 0.3 m. However, inline image surpasses Gf at larger slips: at u≈10 m, inline image and Gf≈106. Possible interpretations of this misfit involve the complexity of damage and weakening mechanisms within mature fault zone structures.
Nielsen, S., Spagnuolo, E., Smith, S., Violay, M., Di Toro, G., & Bistacchi, A. (2016). Scaling in natural and laboratory earthquakes. Geophysical Research Letters, 43(4), 1504-1510. https://doi.org/10.1002/2015gl067490
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 29, 2016 |
Online Publication Date | Feb 20, 2016 |
Publication Date | Feb 28, 2016 |
Deposit Date | Apr 7, 2016 |
Publicly Available Date | Aug 20, 2016 |
Journal | Geophysical Research Letters |
Print ISSN | 0094-8276 |
Electronic ISSN | 1944-8007 |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 43 |
Issue | 4 |
Pages | 1504-1510 |
DOI | https://doi.org/10.1002/2015gl067490 |
Public URL | https://durham-repository.worktribe.com/output/1407213 |
Published Journal Article
(712 Kb)
PDF
Copyright Statement
Nielsen, S., Spagnuolo, E., Smith, S., Violay, M., Di Toro, G. & Bistacchi, A. (2016). Scaling in natural and laboratory earthquakes. Geophysical Research Letters 43(4): 1504-1510, DOI: 10.1002/2015GL067490. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Fracture Energy and Breakdown Work During Earthquakes
(2023)
Journal Article
Frictional power dissipation in a seismic ancient fault
(2023)
Journal Article
Scaling Seismic Fault Thickness From the Laboratory to the Field
(2021)
Journal Article
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
Apache License Version 2.0 (http://www.apache.org/licenses/)
Apache License Version 2.0 (http://www.apache.org/licenses/)
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search