Seismo Lab Seminar

Benefiting from the advances in numerical simulations, optimization algorithms and high-performance computing facilities, full-waveform seismic tomography has been widely used to image the subsurface with high resolution and fidelity across scales. In this presentation, I will cover the key concepts and procedures of full-waveform seismic tomography, and demonstrate an application to imaging the Alaskan lithosphere. Obtained by applying full-waveform seismic tomography to the ambient noise and earthquake data collected by the EarthScope deployment across the entire Alaska from 2014 to 2021, the shear-velocity model reveals features related to the crustal variations, thermal structure, subduction geometry and volcanic activities in Alaska. Finally, I will briefly discuss the wavefield injection technique, which, among other techniques, may contribute to accelerating the workflow of full-waveform seismic tomography.