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- W2082448178 abstract "A method for interval velocity analysis is formulated on the basis of wavefield extrapolation, i.e., on the basis of wave-equation migration. When this scheme is applied to multioffset seismic sections or to an ensemble of CMP gathers, it allows for the proper treatment of dipping events. The underlying assumptions are that local velocities should be derived from data associated with events within the interval under consideration. To minimize the effect of the region above the layer of interest, the data are first extrapolated to the top of the analysis interval. Subsequent analysis of these data then pertains to the events within this interval. Velocity estimation consists of repeated wavefield extrapolations through the analysis interval using a set of trial velocities. The optimal velocity is chosen on the basis of coherency measures designed to express the collective phase agreement among a set of offset Fourier modes. The reliability of this approach to interval velocity estimation is demonstrated on synthetic multi-offset data." @default.
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- W2082448178 date "1984-06-01" @default.
- W2082448178 modified "2023-10-14" @default.
- W2082448178 title "INTERVAL VELOCITY ANALYSIS BY WAVE EXTRAPOLATION*" @default.
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- W2082448178 doi "https://doi.org/10.1111/j.1365-2478.1984.tb01110.x" @default.
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