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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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Acknowledgments

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

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Correspondence to Shiro Hirano .

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Hirano, S. (2017). Propagation Velocity of Pulse-Like Rupture Along Earthquake Faults. In: Itou, H., Kimura, M., Chalupecký, V., Ohtsuka, K., Tagami, D., Takada, A. (eds) Mathematical Analysis of Continuum Mechanics and Industrial Applications. Mathematics for Industry, vol 26. Springer, Singapore. https://doi.org/10.1007/978-981-10-2633-1_10

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  • DOI: https://doi.org/10.1007/978-981-10-2633-1_10

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