The Approach to the Inversion Process in Reflection Seismics

  • A. A. Fitch
  • K. Helbig
Part of the Ettore Majorana International Science Series book series (EMISS, volume 11)


The seismogram generated by plane waves falling vertically on a stack of plane parallel layers can be expressed in terms of the sequence of the reflection coefficients corresponding to the interfaces between individual layers. The reflection coefficients can be expressed through the wave impedances, which are parameters characterizing the layers and are related to the elastic constants and the density (and thus also to the velocity) of the layers. A first approximation to the synthetic seismogram is the convolution of the input pulse with the sequence of reflection coefficients. In this approximation, only the simple wave path (surface — reflector — surface) is taken into account. Internal multiples (“reverberants”) can be taken into account by algorithms such as that described by the “Burg ladder”.


Reflection Coefficient Rayleigh Wave Wave Train Reflection SEISMICS Synthetic Seismogram 
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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • A. A. Fitch
    • 1
  • K. Helbig
    • 2
  1. 1.Seismograph Service Ltd HolwoodKeston KentEngland
  2. 2.Vening Meinesz LaboratoryRijksuniversiteit UtrechtTA UtrechtThe Netherlands

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