Seismic inversion by a rms born approximation in the space-time domain

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Geophys. Prospect.; (United States)

DOI:https://doi.org/10.1111/j.1365-2478.1989.tb01821.x· OSTI ID:6314579

Fokkema, J T; VanDenBerg, P M

A new approximate method to calculate the space-time acoustic wave motion generated by an impulsive point source in a horizontally layered configuration is presented. The configuration consists of a stack of fluid layers between two acoustic half-spaces where the source and the receiver are located in the upper half-space. A distorted-wave Born approximation is introduced; the important feature of the method is the assumption of a background medium with vertical varying root-mean-square acoustic wave speed. A closed-form expression for the scattered field in space and time as a function of the contrast parameters is deduced. The result agrees closely with rigorously calculated synthetic seismograms. In the inverse scheme the wave speed and mass density can be reconstructed within a single trace. Results of the inversion scheme applied to synthetic data are shown.

• Research Organization: Delft Univ. of Technology, Dept. of Mining Engineering, Section Technical Geophysics, Delft (NL); Delft Univ. of Technology, Dept. of Electrical Engineering, Lab. of Electromagnetic Research, Delft (NL)
• OSTI ID: 6314579
• Journal Information: Geophys. Prospect.; (United States), Vol. 37:1
• Country of Publication: United States
• Language: English

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