Journal of Earth Science & Climatic Change
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The success of a seismic investigation is defined by how well the model used fits the data in the study area. At the same time
a model of interpretation is dictated by the type of the data. In seismology we have various observations associated with
different frequencies. Namely: Rock sample measurements; 500 kHz; sonic logs; 2 kHz-20 kHz; various types of other seismic
observations at lower frequencies. Very often the models of interpretation based on various types of the data for the same
areas do not coincide. For example, if we consider a velocity model for wave propagation when the wavelength is less than the
thickness of individual layer, the model should be a layered model. In the case when the wavelength is comparable with the
thickness of the individual layers, we can treat this situation as an ingomogeneous media with scattering effects. Finally, when
the wavelength is much greater than the thickness of the layers, we should investigate an effectively homogeneous anisotropic
medium. In the presented paper we consider all three cases and use synthetic seismograms that are constructed for all these
situations. The way to finding the link between these apparently different structures made at different frequencies is found and
presented. The link between sonic data and lower frequency seismic measurements is established.
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