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Propagation Velocity of Pulse-Like Rupture Along Earthquake Faults

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Part of the Mathematics for Industry book series (MFI, volume 26)

Abstract

During earthquakes , the rupture front propagates along faults at approximately 40–90 % of the shear or Rayleigh wave velocity, with slip rate often concentrated in a narrow region behind the front. Past studies have considered this phenomenon using a steady-state pulse-like rupture model and a slip-weakening friction law ; however, the results included a trade-off between rupture velocity and the scale of the pulse, which prevents the rupture velocity from being uniquely determined. In this study, we explore this issue and develop a model to determine rupture velocity by considering a friction law based on a numerical simulation of a past study for a slipping plane with its microscopic structure. We combine two models from past studies to construct a relationship between rupture velocity and some tectonophysical/geological parameters.

Keywords

Singular Integral Equation Slip Rate Rupture Velocity Fault Gouge Rupture Propagation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

The author is grateful to T. Yamashita and T. Hatano for helpful discussions.

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© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  1. 1.Ritsumeikan UniversityKusatsuJapan

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