Local earthquake tomography between rays and waves: fat ray tomography

摘要: Abstract The limitations of ray-based forward solutions in seismic tomography are theoretically well known. To correctly represent the physical problem tomography, application full three-dimensional (3-D) wave theory would be required. Up to now this is not possible for size a typical local earthquake study. With concept fat rays resembling waves Fresnel volume, more complete, physically consistent and accurate solution available. In paper, we present an approach include called Fatomo. comparative study with synthetic data inversion results Fatomo SIMULPS, reveals new insights into role resolution model parameterization tomography. Intuitively expected effects on estimates, such as higher node sampling values lower diagonal element wider can seen results. For ideal parameterization, differences between ray small. Our document, however, that influence less critical than