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2016 SW4 Tutorial

This workshop gives a hands-on introduction to the parallel seismic wave propagation code SW4 (Seismic Waves, 4th order). This code solves the seismic wave equations in displacement formulation using a node-based finite difference approach that satisfies the principle of summation by parts. SW4 implements substantial capabilities for regional 3-D seismic modeling, including Cartesian local mesh refinement for making the computational mesh finer near the free surface, and uses a curvilinear mesh for capturing realistic topography. SW4 fully supports heterogeneous isotropic elastic and viscoelastic material models, with limited support for heterogeneous 21-parameter anisotropic elastic material models.

INSTRUCTOR

Anders Petersson, LLNL

Workshop Information

WORKSHOP TOPICS

  • Governing equations and a brief introduction to the numerical methods
  • Setting up an SW4 simulation
    • The computational grid and supergrid damping layers
    • Specifying the material model for isotropic elastic or viscoelastic materials
    • Topography
    • Mesh refinement
    • The source model; using SRF files
    • Output options
    • Anisotropic elastic materials
  • Running SW4 (on parallel machines)
  • Analyzing results

Simulation Seismic Wave Propagation with SW4 [slides]

REGISTRATION

Please registered for this tutorial through the CIG '16 registration web page.

PLEASE CHECK BACK PRIOR TO THE TUTORIAL FOR UPDATED INSTRUCTIONS.

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