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Dr. Gerard Schuster, Professor at King Abdullah University of Science and Technology, presents ” Wave Equation Inversion of Skeletonized Data” at the MIT Earth Resources Laboratory.
“Full-waveform inversion of seismic data is often plagued by cycle-skipping problems so that an iterative optimization method often gets stuck in a local minimum. To avoid this problem, we simplify the objective function so that the iterative solution can quickly converge to a solution in the vicinity of the global minimum. The objective function is simplified by only inverting parsimonious and important portions of the data, which are defined as skeletonized data. We have developed the general theory of wave-equation inversion of skeletonized data. Its effectiveness is demonstrated with examples from traveltime inversion of transmission and reflection arrivals, dispersion inversion of surface waves, Q-inversion from shifts of spectral peaks in the frequency spectrum, and multiscale phase inversion of seismic data.”
Live video of this talk will be available on our Youtube channel.
