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.