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Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
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Strong ground motion prediction using virtual earthquakes.

M A Denolle1, E M Dunham, G A Prieto

  • 1Department of Geophysics, Stanford University, 397 Panama Mall, Stanford, CA 94305, USA.

Science (New York, N.Y.)
|January 25, 2014
PubMed
Summary
This summary is machine-generated.

We present a new virtual earthquake method to predict seismic wave amplification in sedimentary basins. This approach validates earthquake simulations and improves ground motion predictions for future seismic events.

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Area of Science:

  • Earthquake seismology
  • Geophysics
  • Computational seismology

Background:

  • Sedimentary basins amplify seismic waves, increasing earthquake damage.
  • Current earthquake simulations lack validation for future events.

Purpose of the Study:

  • To introduce a novel method for ground motion prediction using the ambient seismic field.
  • To validate earthquake simulations by comparing them with a new approach.

Main Methods:

  • Utilizing the ambient seismic field for ground motion prediction.
  • Applying the virtual earthquake approach to magnitude 7 scenario earthquakes on the southern San Andreas fault.
  • Comparing predictions with traditional seismic wave propagation simulations.

Main Results:

  • Both methods reveal significant seismic wave amplification and source-structure coupling.
  • Substantial differences in predicted shaking patterns across the Los Angeles Basin were observed.
  • The virtual earthquake approach offers a new way to predict long-period strong ground motion.

Conclusions:

  • The virtual earthquake approach provides a viable method for validating earthquake simulations.
  • This new technique enhances the prediction of ground motion, particularly long-period waves.
  • Understanding basin effects is crucial for accurate earthquake hazard assessment.