Abstract
A method for quantitative thin‐layer thickness estimation using relative seismic peak frequency variation was introduced in this paper. By analytical study of thin‐bed, a unified formula which described the general peak frequency‐thickness relationship was derived, and it shows seismic peak frequency is only determined by the ratio of top and bottom reflection coefficients instead of their absolute value. Seismic responses of thin‐layer wedge models were discussed and analyzed using a Ricker wavelet. Comparing with equal magnitude opposite polarity and equal magnitude identical polarity wedge models, it was found that the relative peak frequency variation can describe frequency‐thickness relationship of these two cases in unified formula. By means of wedge models simulation with all possible top and bottom reflection coefficients, a chart which depicted peak frequency‐thickness relationship was obtained, and the general evolution characteristics between seismic peak frequency and thickness was concluded.
Published Version
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