Global ETD Search
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Showing 1 to 5 of 5 for “"Velocity Model Building"”.
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Seismic Imaging and Velocity Model Building in the Thrace Region, Northwestern Turkey: A Case Study
… refine the velocities to get the final interval velocity. Having the final interval velocity, reverse-time migration was used. The tomographic velocity analysis was successful in yielding an accurate interval velocity. After application of all these imaging methods, I found that the RTM gave the …
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Tomographic velocity model building in high-fidelity seismic depth imaging of near surface and VSP settings
… between the raypath distribution and the model parameterization scheme. A reasonable model parametrization is the key to successful tomography applications, especially when the ray coverage is poor and uneven. Motivated by a geologically plausible model parameterization, the multiscale …
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Elastic properties of salt: laboratory measurements, well-log analysis, and a seismic survey over the Hockley Salt Mine, Texas
… for S-waves. For a 1 km-thick numerical halite model, the travel-time difference caused by cubic anisotropy is up to 20 ms for P-waves based on the calculated stiffness values. We analyzed 142 well-log from boreholes drilled through salt in the GoM. We find an empirical relationship for P-wave …
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Building Velocity Models for Steep-Dip Prestack Depth Migration through First Arrival Traveltime Tomography
… depth migration, and an excellent seismic velocity model. Poststack time migrated seismic images, normal moveout velocity analysis, well logs, and other geologic information are used to build the velocity model. In regions of interest outside of sedimentary basins, such as major strike-slip …
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The Challenges and Solutions of Green Seismic Survey: Imaging Deep Seafloor Structures with Cruise TN-373 Reflection Data
… focusing on pre-processing, deconvolution, velocity model building, and migration algorithms for imaging deep marine sediments. Common marine noises are attenuated by classifying them based on origin, coherency, and frequency to increase the signal-to-noise ratio (SNR). To improve resolution …