Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Surface Wave Inversion"”.
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Surface Wave Inversion of the Upper Mantle Velocity Structure in the Ross Sea Region, Western Antarctica
… to the AK135-β reference earth model.</p> <p>Surface wave inversion results reveal three regions with distinct seismic velocity structures: the East Antarctic craton, the Transantarctic Mountains orogenic zone, and the extensionally rifted Ross Sea. The extensional zone of the Ross Sea …
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Combining body wave tomography, surface wave inversion, seismic interferometry and laboratory measurements to characterize the black shales on Bornholm at different scales
… data was analyzed with traveltime tomography, surface wave inversion and seismic interferometry to obtain the P-wave and S-wave velocity models of the subsurface. The P-wave velocity models which were determined for all three profiles clearly locate the Alum Shale layer between the Komstad …
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S-wave velocity structure beneath the Kaapvaal Craton from surface-wave inversions compared with estimates from mantle xenoliths
Results from two-station surface-wave inversions across the Archean Kaapvaal craton of southern Africa are compared with seismic velocities estimated from approximately 100 mantle xenoliths brought to the surface in kimberlite pipes. As the xenoliths represent a snapshot of the mantle at the time …
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Learning Seismic Waves for Imaging the Earth
… studies imaging Earth’s interior with seismic wavefields for seismic exploration and monitoring, and shows applications of deep learning in solving challenges in seismic imaging with either active or passive seismic data. For active data, we develop deep-learning methods to extrapolate missing …
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Development of Deep Shear Wave Velocity Profiles and an Approach to Generate Site Signature Consistent Pseudo Shear Wave Velocity Profiles in the Mississippi Embayment
<p>This dissertation details the development of a surface wave method (SWM) technique to generate deep shear wave velocity profiles (VS profiles), applying this technique at 24 sites across the Mississippi embayment and developing an approach to generate pseudo site signature consistent VS profiles …
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Analyses and Applications of Seismic Surface Waves Using Machine Learning Algorithm
Surface waves are energetic signal components in the seismic inversion for near-surface elastic properties. However, they are noise components in reflection seismology in hydrocarbon exploration. Detecting and outlining the region of surface waves in seismic gathers facilitates either their …
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Seismic study of the crust and upper mantle structure in eastern Asia using ambient noise correlation and earthquake data
… the media impulse response (Green’s function) of surface wave between two seismic stations can be retrieved from the cross correlation of diffusive wave field. This method provides additional data coverage to the study region and has been quickly used in various seismic studies. In this …