Numerical simulation of seismic wave propagation in media with viscoelastic intrusions

Authors

  • D.M. Vishnevsky
  • V.N. Lisitsa
  • G.V. Reshetova

Keywords:

elasticity
seismic attenuation
finite-difference schemes
domain decomposition
parallel algorithms

Abstract

Seismic attenuation is a widespread property of the Earth’s interior due to low consolidation and fluid saturation of the rocks. However, viscoelastic formations typically take as few as 10 to 20% of the model. Thus, the use of computationally intensive algorithms, oriented on viscoelasticity, in the entire computational domains makes the simulations inefficient. In this paper an original algorithm based on the coupling of the elastic and viscoelastic statements is presented. The computationally intensive approach is used only in subdomains embedding the viscoelastic formations, whereas the ideal elastic equations are solved elsewhere. As a result, the speed-up of the hybrid algorithm is 1.7 compared to a purely viscoelastic implementation.

New computational technologies

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Published

2013-03-25

Issue

Vol. 14 (2013): Issue 1.

Section

Section 1. Numerical methods and applications

Author Biographies

D.M. Vishnevsky

Trofimuk Institute of Petroleum Geology and Geophysics of SB RAS
• Researcher

V.N. Lisitsa

Trofimuk Institute of Petroleum Geology and Geophysics of SB RAS
• Head of Laboratory

G.V. Reshetova

The Institute of Computational Mathematics and Mathematical Geophysics of SB RAS (ICM&MG SB RAS)
• Senior Researcher

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