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Anatomy of Continuous Mars SEIS and Pressure Data from Unsupervised Learning
Reciprocity-gap misfit functional for distributed acoustic sensing, combining data from passive and active sources
Full reciprocity-gap waveform inversion enabling sparse-source acquisition
Parsimonious Seismic Tomography with Poisson Voronoi Projections: Methodology and Validation
Massively parallel structured direct solver for equations describing time-harmonic qP-polarized waves in TTI media
Recursive imaging with multiply scattered waves using partial image regularization: A North Sea case study
Extended isochron rays in prestack depth (map) migration
Kinematics of shot-geophone migration
A novel application of time-reversed acoustics: Salt-dome flank imaging using walkaway VSP surveys
Abstract In this paper we present initial results of applying Time-Reversed Acoustics (TRA) technology to salt- dome flank, seismic imaging. We created a set of syn’thetic traces representing a multilevel, walkaway VSP for a model composed of a simplified Gulf of Mexico vertical-velocity gradient and an embedded salt dome. We first applied the concepts of TRA to the synthetic traces to create a set of redatummed traces without hav’ing to perform velocity analysis, moveout corrections, or complicated processing. Each redatummed trace ap’proximates the output of a zero-offset, downhole source and receiver pair. To produce the final salt-dome flank image, we then applied conventional, poststack, depth migration to the zero-offset section. Our results show a very good image of the salt when compared to an image derived using data from a downhole, zero-offset source and receiver pairs. The simplicity of our TRA implementation provides a virtually automated method to estimate a zero-offset, seismic section as if it had been collected from the reference frame of the borehole containing the VSP survey.