Fast computation of static stress changes on 2D faults from final slip distributions

J. Ripperger*, Paul Mai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Computing the distribution of static stress changes on the fault plane of an earthquake, given the distribution of static displacements, is of great importance in earthquake dynamics. This study extends the approach developed by Andrews [1980], and compares it against existing analytical formulations. We present calculations for slip maps of past earthquakes and find that the stress-change results are accurate to about 1-2% of the maximum absolute stress change, while the computation time is greatly reduced. Our method therefore provides a reliable and fast alternative to other methods. In particular, its speed will make Computation of large suites of models feasible, thus facilitating the construction of physically consistent source characterizations for strong motion simulation.

Original languageEnglish (US)
JournalGeophysical Research Letters
Volume31
Issue number18
DOIs
StatePublished - Sep 28 2004

Keywords

  • 7209 Seismology: Earthquake dynamics and mechanics
  • 7215 Seismology: Earthquake parameters
  • 7260 Seismology: Theory and modeling

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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