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Computational Elastic Wave Propagation: Advances in Global and Regional Seismology

  • Gilbert Brietzke
  • Heiner Igel
  • Gunnar Jahnke
  • Markus Treml
  • Michael Ewald
  • Haijiang Wang
  • Alain Cochard
  • Guoquan Wang
Conference paper

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.

Keywords

Ground Motion Material Interface Earthquake Scenario Seismic Wave Propagation Elastic Wave Propagation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Gilbert Brietzke
    • 1
  • Heiner Igel
    • 1
  • Gunnar Jahnke
    • 1
    • 2
  • Markus Treml
    • 1
  • Michael Ewald
    • 1
  • Haijiang Wang
    • 1
  • Alain Cochard
    • 1
  • Guoquan Wang
    • 1
  1. 1.Department für Geo- und Umweltwissenschaften, Sektion GeophysikLudwig-Maximilians-Universität MünchenMünchenGermany
  2. 2.Bundesanstalt für Geowissenschaften und RohstoffeHannoverGermany

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