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Computational Elastic Wave Propagation: Advances in Global and Regional Seismology

In: High Performance Computing in Science and Engineering, Munich 2004

Author

Listed:
  • Gilbert Brietzke

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Heiner Igel

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Gunnar Jahnke

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik
    Bundesanstalt für Geowissenschaften und Rohstoffe)

  • Markus Treml

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Michael Ewald

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Haijiang Wang

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Alain Cochard

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

  • Guoquan Wang

    (Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Sektion Geophysik)

Abstract

We report advances in simulating wave propagation in the Earth's interior in 2D and 3D using several numerical methods. For the Earth's deep interior simulations are carried out on a global scale using axi-symmetric models and 3D spherical sections. In addition, we calculate earthquake scenarios on a regional scale for prediction of ground motion (e.g. peak motion amplitude, shaking duration), taking into account amplification effects of low velocity zones in active faults and basin structures, topography effects, shear wave splitting effects due to anisotropy and attenuation due to visco-elasticity. These predictions may be useful for risk evaluation and civil engineering purposes. We further simulate earthquake sources as dynamic fault ruptures in the context of typical fault-zone velocity structures and material interfaces. As observations of earthquake-induced ground rotations are becoming available we investigate systematically the effects of 3D heterogeneity on rotational motions.

Suggested Citation

  • Gilbert Brietzke & Heiner Igel & Gunnar Jahnke & Markus Treml & Michael Ewald & Haijiang Wang & Alain Cochard & Guoquan Wang, 2005. "Computational Elastic Wave Propagation: Advances in Global and Regional Seismology," Springer Books, in: Siegfried Wagner & Werner Hanke & Arndt Bode & Franz Durst (ed.), High Performance Computing in Science and Engineering, Munich 2004, pages 445-458, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-26657-0_43
    DOI: 10.1007/3-540-26657-7_43
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