Studia Geophysica et Geodaetica

, Volume 46, Issue 2, pp 293–320 | Cite as

Comparison of Seismic Dispersion and Attenuation Models

  • Björn Ursin
  • Tommy Toverud


The frequency-dependent attenuation of seismic waves causes decreased resolution of seismic images with depth, and the difference in transmission losses induces amplitude variations with offset. Transmission losses may occur due to friction or fluid movement, or may result from scattering in thin-layer. Whatever the physical mechanism, they can often be conveniently described using an empirical formulation wherein the elastic moduli and propagation velocity are complex functions of frequency.

We have compiled and compared algebraically and numerically eight different models involving complex velocity: the Kolsky-Futterman model, the power-law model, Kjartansson's model, Müller's model, Azimi's second and third model, the Cole-Cole model, and the standard linear-solid model.

For two different parameter sets, the attenuation and phase velocity are computed in the seismic frequency band, and the plane-wave propagation of a Ricker wavelet for the other models is compared with that for the Kolsky-Futterman model. The first parameter set consists of parameters for each of the models calculated from expressions given in the appendix. These expressions make the different models behave similarly to the KF model. The second parameter set consists of model parameters that are numerically adapted to the KF model.

By selecting proper parameters, all models, except the standard linear-solid model, show behavior similar to that of the Kolsky-Futterman model. The SLS model behaves differently from the other models as the frequency goes to zero or infinity. Broadband measurement data is needed to select a specific model for a given seismic experiment.

attenuation dispersion numerical comparison 


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© StudiaGeo s.r.o. 2002

Authors and Affiliations

  • Björn Ursin
    • 1
  • Tommy Toverud
    • 1
  1. 1.Department of Petroleum Engineering and Applied GeophysicsNorwegian University of Science and TechnologyTrondheimNorway

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